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Hisashi Imamura
Faculty of Fisheries Sciences　Marine Bioresource and Environmental Science　Marine Biology and Biodiversity
Professor
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Last Updated :2024/05/19

Researcher Profile and Settings

Affiliation

  • Faculty of Fisheries Sciences　Marine Bioresource and Environmental Science　Marine Biology and Biodiversity

Job Title

  • Professor

Degree

  • Doctor of Fisheries（Hokkaido University）

J-Global ID

Research Interests

  • 魚類系統・分類学   Phylogemy and Taxonomy of Fishes   

Research Areas

  • Life sciences / Biodiversity and systematics

Educational Organization

Academic & Professional Experience

  • 2016/04 - Today Hokkaido University Faculty of Fisheries Sciences Professor
  • 2009/04 - 2016/03 Hokkaido University Faculty of Fisheries Sciences Associate professor
  • 2005/04 - 2009/03 The Hokkaido University Museum Associate professor
  • 1999/04 - 2005/03 The Hokkaido University Museum Assistant professor
  • 1996/10 - 1999/03 科学技術振興事業団 科学技術特別研究員
  • 1996 - 1999 Domestic Research Fellow of Japan Science and Technology Corporation
  • 1996/04 - 1996/09 財団法人水産科学研究奨励会 研究員

Education

  •        - 1996  Hokkaido University
  •        - 1996  Hokkaido University  Graduate School, Division of Fisheries
  • 1984/04 - 1988/03  Hokkaido University  School of Fisheries Sciences
  •        - 1988  Hokkaido University  Faculty of Fisheries

Association Memberships

  • 日本動物分類学会   アメリカ魚類・は虫類学会(American Society of Ichthyologists and Herpetologists)   日本魚類学会   

Research Activities

Published Papers

  • 古庄 誠, 篠原現人, 今村 央, 成松庸二
    2023/10/05 [Refereed]
  • Deep-sea fishes from the Andaman Sea by R/V Chakratong Tongyai during 1996–2000. Part 7: order Stomiiformes
    Kota Obata, Kohei Mita, Tetsuro Senda, Toshio Kawai, Fumihito Tashiro, Hisashi Imamura, Charatsee Aungtonya, Surapong Banchongmanee
    2023/10 [Refereed]
  • Type status and taxonomic accounts for Ambiserrula jugosa (McCulloch 1914) and Inegocia harrisii (McCulloch 1914) (Scorpaeniformes: Platycephalidae)
    Hisashi Imamura, Douglass F. Hoese
    Ichthyological Research 2023/09/25 [Refereed]
  • 小幡光汰, 古庄 誠, 今村 央, 成松庸二
    魚類学雑誌 2023/08/05 [Refereed]
  • Hisashi Imamura, Keita Koeda, Hsuan-Ching Ho
    Acta Ichthyologica et Piscatoria 52 (4) 267 - 271 0137-1592 2022/12/15 [Refereed]
     
    The smallknob flathead, Thysanophrys papillaris Imamura et Knapp, 1999, is redescribed based on six specimens collected from southern Taiwan, which constitutes a northward range extension of the species [previously recorded from the Andaman, Timor, and Arafura seas (eastern Indian Ocean), and Nha Trang, Vietnam (western Pacific Ocean)]. Thysanophrys papillaris is distinguished from all congeneric species in having a combination of 11 second dorsal-fin rays, 12 anal-fin rays, 58–75 scale rows below the lateral line (slanting downward and forward), a longer snout (snout length / orbital diameter ratio 1.1–1.3), 1 or 2 small papillae on the eye, the upper iris lappet with short branches, a single preorbital spine and 3–5 suborbital spines. Previously suggested intraspecific variation in the number of eye papillae is confirmed.
  • Platycephalus indicus (Platycephalidae) from Tanega-shima island, the Osumi Islands, Kagoshima, Japan: first record from the Osumi Islands and the northernmost record for the species
    Furuhashi, R, Imamura, H, Motomura, H
    Ichthy, Natural History of Fishes of Japan 2021/04 [Refereed]
  • First Japanese record of the snaggletooth Astronesthes formosana (Protacanthopterygii: Stomiidae)
    Koizumi, Y, Endo, H, Imamura, H
    Japanese Journal of Ichthyology 2021/03 [Refereed]
  • Morphological characters of the rare velvetfish, Cocotropus keramaensis (Scorpaeniformes: Aploactinidae), including coloration and osteology
    Shinohara, G, Imamura, H
    Japanese Journal of Ichthyology 2021/01 [Refereed]
  • Hisashi Imamura
    Ichthyological Research 1341-8998 2020/09/22 [Refereed][Not invited]
  • Hisashi Imamura, Douglass F. Hoese
    Ichthyological Research 1341-8998 2020/09/14 [Refereed][Not invited]
  • A new species of the genus Cociella Whitley, 1940 (Scorpaeniformes: Platycephalidae) form the Andaman Se
    Imamura, H., Aungtonya, C.
    Phuket Marine Biological Center Research Bulletin 77 25 - 31 2020/06 [Refereed][Not invited]
  • Phylogenetic systematics of the needlefish (Beloniformes: Belonidae)
    Toyama, T, Kawai, T, Imamura, H
    Thailand Natural History Museum Journal, Monograph 1 1 - 73 2020/05 [Refereed][Not invited]
  • Hisashi Imamura, Douglass F. Hoese
    Ichthyological Research 1341-8998 2020/04/10 [Refereed][Not invited]
  • Taxonomic revision of the genus Lycenchelys (Osteichthyes: Zoarcidae) from Japanese waters
    Kawarada, S, Imamura, H, Narimatsu,Y, Shinohara, G
    Zootaxa 4762 (1) 1 - 66 2020/04/07 [Refereed][Not invited]
  • Taxonomic revision of the flathead genus Leviprora Whitley 1931, with recognition of Leviprora semermis (De Vis 1883) as a valid species (family Platycephalidae)
    Imamura H, Moore G. I
    Ichthyological Research 2020/02/03 [Refereed][Not invited]
  • Motomura Hiroyuki, Taguchi Jumpei, Imamura Hisashi, Matsunuma Mizuki
    Japanese Journal of Ichthyology 一般社団法人 日本魚類学会 0021-5090 2020 [Refereed][Not invited]
     
    <p>During an ichthyofaunal survey of southern Japan, a single specimen (74.9 mm standard length; SL), collected at a depth of 8 m off Kashiwa-jima Island, Kochi Prefecture in June 1992, was found in the fish collection of the National Museum of Nature and Science, Tsukuba, Japan. The specimen was subsequently identified as a species of <i>Thysanophyrys</i> Ogilby, 1898, having the following combination of characters: dorsal surface of head lacking tubercles, suborbital ridge with six distinct spines (including one preorbital spine), lateral-line scales with two exterior openings posteriorly, ocular papillae absent, interopercular flap absent, and well developed sensory tubes on upper cheek region. The specific identification as <i>T. randalli</i> Knapp, 2013 was based on the short snout (length 10.1% of SL), a single preocular spine, no supraocular tentacles, the iris lappet without branches, interopercle expanded posteroventrally, and six scale rows between the second dorsal-fin origin and lateral line. <i>Thysanophyrys randalli</i> having been recorded previously only from the western Indian Ocean and Pacific Ocean north to Kiribati, the Kochi specimen represents the first northwestern Pacific (including Japanese waters) and northernmost records of the species. The species is compared in detail with the closely related congener <i>Thysanophyrys chiltonae</i> Schultz, 1966. In Japanese waters, both species occur around the southern oceanic islands. The new standard Japanese name "Kokuchikuroshimagochi" is proposed for <i>T. randalli</i> ("Kuroshimagochi" applied to <i>T. chiltonae</i>).</p>
  • First record of Onigocia grandisquama (Scorpaeniformes: Platycephalidae) from Japan
    IMAMURA Hisashi, SHINOHARA Gento
    Japanese Journal of Ichthyology 2019/05 [Refereed][Not invited]
  • First record of Thysanophrys papillaris (Actinopterygii: Scorpaeniformes: Platycephalidae) from the western Pacific
    IMAMURA Hisashi, KIMURA Katsuya, NGUYEN Van Quan
    Species Diversity 24 (1) 17 - 22 2019/05 [Refereed][Not invited]
  • 木村克也, 今村央, 河合俊郎
    魚類学雑誌 66 (1) 121 - 122 2019/04 [Refereed][Not invited]
  • 北海道函館市から採集されたヨリトフグ Sphoeroides pachygasterの記録
    岸本早貴, 河合俊郎, 今村央
    日本生物地理学会会報 73 181 - 186 2018/12 [Refereed][Not invited]
  • KIMURA Katsuya, IMAMURA Hisashi, NARIMATSU Yoji
    IMAMURA Hisashi
    日本製物地理学会会報 73 160 - 163 2018/12 [Refereed][Not invited]
  • 北海道函館市臼尻沖で漁獲されたアナゴ科クロアナゴの北限記録
    高橋雄大, 河合俊郎, 今村 央
    日本生物地理学会会報 72 164 - 168 2018/12 [Refereed][Not invited]
  • Comparative morphology and phylogenetic systematics of the families Cheilodactylidae and Latridae (Perciformes: Cirrhitoidea), and proposal of a new classification
    KIMURA Katsuya, IMAMURA Hisashi, KAWAI Toshio
    Zootaxa 4536 (1) 1 - 72 2018/12 [Refereed][Not invited]
  • The presence or absence of Rogadius asper (Cuvier 1829) in Australia (Scorpaeniformes: Platycephalidae)
    IMAMURA Hisashi
    Ichthyological Research 2018/07 [Refereed][Not invited]
  • Survey for coastal fishes in near shore habitat of Samui Island, Thailan
    VILASRI Veera, ONODERA Takuma, KAWAI Toshio, IMAMURA Hisashi, KAWAGOE Chikara
    Thailand Natural History Museum Journal 12 (1) 29 - 34 2018/06 [Refereed][Not invited]
  • Hisashi Imamura, Peter N. Psomadakis, Htun Thein
    Ichthyological Research 1 - 8 1341-8998 2018/05/25 [Refereed][Not invited]
     
    Two new species of Bembras Cuvier 1829, Bembras leslieknappi sp. nov. and Bembras andamanensis sp. nov., are described from single specimens collected from the Andaman Sea off Myanmar, eastern Indian Ocean, in 2015. The two new species are distinguished from each other and five known congeners by the numbers of anal-fin rays and pectoral-fin rays (15 and 20 in B. leslieknappi vs. 14 and 20–21 in B. andamanensis), forward-slanting body scale rows above the lateral line (80 vs. 74) and upper limb gill rakers (3 vs. 4), as well as by head (41.5 vs. 42.1% SL), snout (14.3 vs. 13.8% SL) and orbit (10.4 vs. 10.9% SL) proportions, and color of the second dorsal (dusky, with blackish spots only on first spine and bases of many soft rays vs. pale, with many scattered blackish spots), pectoral (with a blotch vs. without it) and caudal (both with a broad band) fins.
  • New records of four fish species from southern Hokkaido, Japan
    KIMURA Katsuya, KAWAI Toshio, IMAMURA Hisashi
    Bulletin of Biogeographical Society of Japan 72 209 - 218 2018/01 [Refereed][Not invited]
  • Shihua Kang, Hisashi Imamura, Toshio Kawai
    Ichthyological Research 65 (1) 29 - 41 1341-8998 2018/01/01 [Refereed][Not invited]
     
    The monophyly of Polynemidae was evaluated and its sister relationship with Sciaenidae discussed, based on osteological and myological characters from 24 polynemid species in eight genera, with comparisons with acanthomorph fishes from literature and 86 species in 8 orders and 63 families examined. Polynemidae was inferred as a monophyletic group, strongly supported by 19 synapomorphies, including four unique characters (unnamed bone present on cephalic sensory canal extending from supratemporal, third actinost not supporting pectoral-fin rays, section A1 comprising lateral and medial elements, and division of obliquus inferioris present between lower postcleithrum and rod-like process on coracoid) in percoids. In addition, seven pectoral girdle characters were recognized, with the girdle possessing filament-like sensory rays, an adaptation to benthic life in muddy water. The sister relationship of Polynemidae and Sciaenidae was supported by six synapomorphies, including two rather rare (a single branchiostegal ray suspended by epihyal and posterior portions of pelvic bones on both sides interdigitated) and two unique characters (metapterygoid and quadrate interdigitated medially and anterior extension of the nasal canal).
  • an Sa by R/V ChDeep-sea fishes collected from the Andaman Sea by R/V Chakratong Tongyai during 1996–2000. Part 1: order Scorpaeniformesakratong Tongyai during 1996–2000. Part 1: order Scorpaeniformes
    KAWAI Toshio, TASHIRO Fumihito, IMAMURA Hisashi, AUNGTONYA Charatsee
    Phuket Marine Biological Center Research Bulletin (74) 23 - 32 2017/06 [Refereed][Not invited]
  • Record of a flathead fish, Rogadius pristiger (Cuvier, 1829) (Platycephalidae) from Taiwan
    KIMURA Katsuya, TAKAGISHI Megumi, KAWAI Toshio, IMAMURA Hisashi, HO Hsuan-Ching, TOMITA Taketeru, TANAKA Fumiya, SHINOHARA Gento
    Platax 14 46 - 51 2017 [Refereed][Not invited]
  • Kanami Oku, Hisashi Imamura, Mamoru Yabe
    ZOOTAXA 4221 (1) 1 - 59 1175-5326 2017/01 [Refereed][Not invited]
     
    Phylogenetic relationships of the family Cyclopteridae were reconstructed based on osteological and external characters. The monophyly of the family was strongly supported by 47 commonly recognized synapomorphies, including six autapomorphies (plus one additional autapomorphy, presence of a dorsal process on the pelvis, recognized after the phylogenetic analysis) among the suborder Cottoidei. As a result of the cladistic analysis, a single most parsimonious phylogeny was obtained, based on characters in 32 transformation series. A new classification of Cyclopteridae based on reconstructed relationships, including three subfamilies [Liparopsinae, Cyclopterinae and Eumicrotreminae (newly established)] and four genera (Aptocyclus, Cyclopsis, Cyclopterus and Eumicrotremus), is proposed.
  • Survey for coastal fishes of Ranong and Phuket Provinces, Thailand in December 2014
    VILASRI Veera, YAMANAKA Ryo, KAWAI Toshio, IMAMURA Hisashi, RATMUANGKHWANG Sahat, TASHIRO Fumihito, OHARA Masahiro
    Thailand Natural History Museum Journal 10 (2) 117 - 123 2016/12 [Refereed][Not invited]
  • Hisashi Imamura
    Species Diversity 21 (2) 151 - 159 1342-1670 2016 [Refereed][Not invited]
     
    A platycephalid fish, Onigocia grandisquama (Regan, 1908) is rediagnosed based on 52 specimens, including the holotype, from the Indo-West Pacific. Geographic variation in the species was recognized in the number of pectoral-fin rays, the first example of such variation in fin ray counts in the Platycephalidae. The species displays wide intraspecific variation in the numbers of lachrymal, preocular, suborbital, and pterotic spines, with values for the first two overlapping with those of the very similar Onigocia spinosa (Temminck and Schlegel, 1843), making it difficult to separate the two. Onigocia grandisquama can be distinguished from O. Spinosa, as well as from Onigocia macrocephala (Weber, 1913) and Onigocia macrolepis (Bleeker, 1854), which share with O. Grandisquama an ocular flap on the posterior part of the eye, in lacking spines on the inner, middle, and/or outer ridges of the lachrymal. The generally greater number of pterotic spines also helps to separate O. Grandisquama from its three congeners.
  • Fumihito Tashiro, Yusuke Hibino, Hisashi Imamura
    ICHTHYOLOGICAL RESEARCH 63 (1) 53 - 58 1341-8998 2016/01 [Refereed][Not invited]
     
    A new worm eel, Neenchelys nudiceps, is described on the basis of a single large specimen (782 mm in total length) collected from the deep-sea bottom (844-856 m) off Sumatra, Indonesia, in the eastern Indian Ocean. The new species is distinguishable from its congeners by the following combination of characters: total vertebrae 221, mandibular pores 7, lateral-line pores anterior to pectoral-fin base 18, and upper and lateral surfaces of snout smooth without papillae. Additionally, it is indicated by a statistical analysis that the new species differs from the two similar species, Neenchelys daedalus and Neenchelys sp. "similis", in morphometric characters. Availability of the three recently described congeners, N. diaphora, N. pelagica and N. similis is discussed, and it is judged that the three species names are unavailable.
  • NAGAO Taishi, IMAMURA HISASHI
    Species Diversity 日本動物分類学会 20 (2) 129 - 133 1342-1670 2015/11 [Refereed][Not invited]
     
    The validity of the platycephalid species Platycephalus clavulatus Cantor, 1849, described from a single specimen collected in the sea of Pinang (=Penang), Malaysia, is evaluated. Although it has been suggested that the holotype of the species is a specimen registered as BMNH 1860.3.19.270 in the Natural History Museum, London (BMNH), which is identifiable as Cociella punctata (Cuvier, 1829), the total length (TL) of the holotype reported by Cantor is 5 7/8 inches (=149 mm), significantly longer than the damaged BMNH specimen, which is estimated to have had a TL of 121 mm. According to the original description of P. clavulatus, the holotype has 11 second dorsal and anal fin rays, one preorbital spine, and two suborbital spines, values which agree with those of C. punctata, a species widely distributed in the western Pacific and the Indian Ocean, including Penang. Although these characters are also present in Cociella crocodila (Cuvier, 1829), that species is known only from Japan, Korea, China, and Taiwan. We conclude that P. clavulatus is conspecific with C. punctata and is a junior synonym of that species.
  • Yuki Nagano, Hisashi Imamura, Mamoru Yabe
    ICHTHYOLOGICAL RESEARCH 62 (3) 245 - 252 1341-8998 2015/04 [Refereed][Not invited]
     
    A new hoplichthyid species, Hoplichthys mcgroutheri, is described on the basis of six specimens (188-244 mm standard length) collected off southwestern Australia. It is clearly distinguished from its congeners by the following combination of characters: dorsal-fin rays V-14; anal-fin rays 16-17, usually 16; pectoral-fin rays 13-14 + 4-5 = 17-18, usually 14 + 4 = 18; infraorbitals mostly spineless; scales present on dorsal surface of body; vomerine tooth patch constricted medially, mostly separating teeth into bilaterally symmetrical patches; interorbit narrow [interorbital width 5.8-6.8 % of head length (HL)]; and orbit relatively large (orbital diameter 41.8-44.9 % HL). The form of the vomerine tooth patch is unique to H. mcgroutheri in this genus.
  • Hisashi Imamura
    Zootaxa 3904 (2) 151 - 207 1175-5334 2015/01/06 [Refereed][Not invited]
     
    The taxonomy of the fish genus Platycephalus Bloch, 1785 from Australia is revised following examination of all extant primary types of Australian species, including those previously synonymized. The following 16 Australian species, including a single new species, are recognized in this study: Platycephalus angustus Steindachner, 1866, Platycephalus aurimaculatus Knapp, 1987, Platycephalus bassensis Cuvier, 1829, Platycephalus caeruleopunctatus McCulloch, 1922, Platycephalus chauliodous Knapp, 1991, Platycephalus conatus Waite & McCulloch, 1915, Platycephalus endrachtensis Quoy & Gaimard, 1825, Platycephalus fuscus Cuvier, 1829, Platycephalus grandispinis Cuvier, 1829, Platycephalus laevigatus Cuvier, 1829, Platycephalus marmoratus Stead, 1908, Platycephalus orbitalis Imamura & Knapp, 2009, Platycephalus richardsoni Castelnau, 1872, Platycephalus speculator Klunzinger, 1872, Platycephalus westraliae (Whitley, 1938) and Platycephalus australis sp. nov. [formerly confused with Platycephalus indicus (Linnaeus, 1758)]. Previously suggested synonymies of several species are reevaluated and a key provided for all Australian species of Platycephalus.
  • Annotated checklist of marine fishes from Phuket and Ranong, Thailand
    Vilasri, V, T. Yamanaka, S. Tochino, T. Kawai, S. Ratmuangkhwang, H. Imamura
    Tropical Natural History 15 (1) 55 - 68 2015 [Refereed][Not invited]
  • Hisashi Imamura
    ZOOTAXA 3904 (2) 151 - 207 1175-5326 2015/01 [Refereed][Not invited]
     
    The taxonomy of the fish genus Platycephalus Bloch, 1785 from Australia is revised following examination of all extant primary types of Australian species, including those previously synonymized. The following 16 Australian species, including a single new species, are recognized in this study: Platycephalus angustus Steindachner, 1866, Platycephalus aurimaculatus Knapp, 1987, Platycephalus bassensis Cuvier, 1829, Platycephalus caeruleopunctatus McCulloch, 1922, Platycephalus chauliodous Knapp, 1991, Platycephalus conatus Waite & McCulloch, 1915, Platycephalus endrachtensis Quoy & Gaimard, 1825, Platycephalus fuscus Cuvier, 1829, Platycephalus grandispinis Cuvier, 1829, Platycephalus laevigatus Cuvier, 1829, Platycephalus marmoratus Stead, 1908, Platycephalus orbitalis Imamura & Knapp, 2009, Platycephalus richardsoni Castelnau, 1872, Platycephalus speculator Klunzinger, 1872, Platycephalus westraliae (Whitley, 1938) and Platycephalus australis sp. nov. [formerly confused with Platycephalus indicus (Linnaeus, 1758)]. Previously suggested synonymies of several species are reevaluated and a key provided for all Australian species of Platycephalus.
  • Hsuan-Ching Ho, Phillip C. Heemstra, Hisashi Imamura
    ZOOTAXA 3802 (3) 335 - 345 1175-5326 2014/05 [Refereed][Not invited]
     
    Parapercis albiventer sp. nov., a new species of sandperch is described based on 12 specimens collected from the western Indian Ocean. It can be distinguished from congeners by having a bright white ventral surface, without color markings on lower fourth of body; dorsal surface of head and body densely covered by small brown spots; a row of 10 faint reddish blotches on a paler background, along body axis; row of 10 deep reddish blotches, the lower part of each blotch with a solid black bar ventrally, below mid-lateral body axis; and combination of following characters: no palatine teeth; snout long; eye small; interorbital space broad; dorsal-fin rays V, 21; anal-fin rays I, 17; pectoral-fin rays 16-17; pored lateral-line scales 55-59; predorsal scales 9 or 10; scales on transverse row 6/17-21; 3 pairs of canine teeth at front of lower jaw; and vertebrae 10 + 20 = 30.
  • Leslie W. Knapp, Hisashi Imamura
    Zootaxa 3846 (3) 447 - 450 1175-5334 2014 [Refereed][Not invited]
     
    Grammoplites vittatus (Valenciennes), often previously overlooked by authors or regarded as a junior synonym of G. scaber (Linnaeus), is shown here to be a valid species. It has more gill rakers (7-8) then G. scaber and G. knappi (usually 6) and a narrower interorbital width than G. scaber. A key to the species of Grammoplites Fowler is given. Copyright © 2014 Magnolia Press.
  • IMAMURA Hisashi
    Species Diversity 日本動物分類学会 18 (2) 183 - 192 1342-1670 2013/11 [Refereed][Not invited]
     
    The taxonomic status of Platycephalus grandispinis Cuvier, 1829 was investigated. Although the holotypes of P. grandispinis and Platycephalus longispinis Macleay, 1884 closely resemble each other, having several characters in common (e.g., 14 second dorsal and anal fin rays, ca. 80 lateral line scales, the interorbit much narrower than the orbital diameter, no distinct interopercular flap, the supraoccipital with a ridge, and the lower preopercular spine much longer than the upper), they differ in the development of the skinny sensory tubes of the preopercle, which are more numerous and better developed in the former. After a detailed examination of the two holotypes and specimens referable to P. grandispinis and P. longispinis from southwestern to southeastern Australia, it was determined that these two nominal species are synonyms. Furthermore, the skinny sensory tubes tend to become more well developed with growth and to show a geographic cline, such a cline in any feature being recognized in the Platycephalidae for the first time. A cline was also recognized in the suborbital width, with a tendency for a greater width in the western population than the eastern. This study provides a detailed redescription of P. grandispinis, which has priority over P. longispinis.
  • Sakurai, S, Imamura, H, Yabe, M
    Japanese Journal of Ichthyology 60 (2) 135 - 140 2013/11 [Refereed][Not invited]
  • Ohashi S, Imamura, H, Yabe, M
    Japanese Journal of Ichthyology 60 (2) 111 - 116 2013/11 [Refereed][Not invited]
  • Hisashi Imamura
    ICHTHYOLOGICAL RESEARCH 60 (3) 282 - 286 1341-8998 2013/07 [Refereed][Not invited]
     
    The identity of Platycephalus mortoni Macleay 1883 was investigated. This species was originally described based on a single specimen from salt water of the lower Burdekin River, Queensland, and has been regarded to be a junior synonym of Platycephalus richardsoni Castelnau 1872. However, the latter is known from southeastern Australia, ranging from Investigator Strait, South Australia to off Clarence River, New South Wales, but not recorded from the type locality of P. mortoni. Because the whereabouts of the holotype of P. mortoni, the sole known specimen of the species, is unknown, the original description of P. mortoni was compared with five species (Platycephalus angustus Staeindachner 1866, Platycephalus endrachtensis Quoy and Gaimard 1825, Platycephalus fuscus Cuvier 1829, Platycephalus indicus Linnaeus 1758 and Platycephalus westraliae Whitley 1938) known from near the Burdekin River, as well as with P. richardsoni. Because the color of the caudal fin, relative dimensions of the orbital diameter and interorbital width, and number of anal fin rays in the holotype mostly agree with P. fuscus, it was concluded P. mortoni is a junior synonym of P. fuscus.
  • Hisashi Imamura, Toshio Kawai
    ICHTHYOLOGICAL RESEARCH 60 (3) 291 - 292 1341-8998 2013/07 [Refereed][Not invited]
  • Hisashi Imamura
    ICHTHYOLOGICAL RESEARCH 60 (2) 112 - 121 1341-8998 2013/04 [Refereed][Not invited]
     
    The platycephalid Platycephalus angustus Steindachner 1866, which has not appeared in recent publications, is recognized as valid and redescribed on the basis of 24 specimens collected from northern Australia and New Guinea. This species is easily separable from other congeners in having a combination of the first dorsal fin usually with two small anterior isolated spines, dorsal and anal soft rays usually 13, orbit relatively small (orbital diameter 11.2-21.5 % HL), postorbital region long (postorbital length 55.5-67.8 % HL), interorbital space wide (interorbital width 7.3-17.3 % HL), suborbital region narrow (suborbital width 4.7-7.2 % HL), vomerine tooth rows tending to increase in number with growth, with 2-4 rows in 106-184 mm SL specimens and a single broad band of numerous rows in larger specimens, teeth present on the dorsal surface of the premaxilla anterolaterally on the edge of the upper jaw in specimens ca. 76 mm SL or longer, and 3-5 dark brown to black bands and spots on its caudal fin. As the stated type locality, Surinam, is considered erroneous, and the holotype appears to have been lost, a neotype is designated with a type locality northeast of Darbilla Creek, Millingimbi, Northern Territory, Australia.
  • Hisashi Imamura, Kenji Odani
    ICHTHYOLOGICAL RESEARCH 60 (1) 1 - 15 1341-8998 2013/01 [Refereed][Not invited]
     
    The phylogenetic relationships of the perciform suborder Trachinoidei, currently including 11 families (Cheimarrichthyidae, Pinguipedidae, Percophidae, Trichonotidae, Creediidae, Champsodontidae, Chiasmodontidae, Leptoscopidae, Ammodytidae, Trachinidae and Uranoscopidae) are reviewed from an historical perspective. The previously questioned monophyly of the suborder and familial limitations remain unclear because of conflicting evidence and differing phylogenetic proposals resulting from morphological and molecular perspectives.
  • Yasuhiro Honma, Hisashi Imamura, Toshio Kawai
    Ichthyological Research 60 (2) 122 - 141 1341-8998 2013 [Refereed][Not invited]
     
    Osteological and myological characters of the genus Perryena are described and the phylogenetic position of the genus is inferred cladistically on the basis of 89 character transformation series, with Perryena representing a branch off a clade comprising the Tetrarogidae, Synanceiidae, Aploactinidae, Congiopodidae, Gnathanacanthidae and Pataecidae, following an initial divergence of the family Apistidae. Perryena is not closely related to Congiopodidae, despite its historical referral to that family. In keeping with the familial rankings given to successive branches of the remaining ingroup, the new family name Perryenidae is proposed for Perryena, here designated as the type genus of the family. © 2013 The Ichthyological Society of Japan.
  • KANEHIRA NAOKO, KANEHIRA NAOKO, IMAMURA HISASHI, YABE MAMORU
    Mem Fac Fish Sci Hokkaido Univ Faculty of Fisheries Sciences, Hokkaido University 54 (1/2) 1 - 28 2186-1927 2012/12 [Not refereed][Not invited]
     
    The phylogenetic relationships of Notacanthoidei were reassessed on the basis of osteological characters and the classification of the suborder reconstructed on the basis of inferred relationships. The monophyly of the suborder is supported by two synapomorphies commonly recognized in all included genera. The phylogenetic analysis also revealed support for the suborder by five synapomorphies characterized by reversals or character transformations. In addition, notacanthoids share five apomorphies, present also in Anguilliformes, which may prove to be valid synapomorphies for the former. A phylogenetic analysis based on characters in 30 transformation series resulted in a single most parsimonious tree, which indicated that Aldrovandia branched off initially from other notacanthoids, followed by Lipogenys, and Polyacanthonotus and Notacanthus, which share a sister relationship with each other. Based on the reconstructed relationships, Notacanthoidei is classified into two families, Holasauridae and Notacanthidae, the latter being separated into subfamilies Lipogenyinae and Notacanthinae. Such a classification of Notacanthoidei, recognizing Lipogeninae as a subfamily of Notacanthidae, has not been previously proposed.
  • Tomoyuki Yamanaka, Hisashi Imamura, Masaki Itoh, Mamoru Yabe
    ICHTHYOLOGICAL RESEARCH 59 (4) 365 - 372 1341-8998 2012/11 [Refereed][Not invited]
     
    Although the genus Eulophias Smith 1902 has been considered to include two valid species, Eulophias tanneri Smith 1902 and Eulophias owashii Okada and Suzuki 1954, it was revealed that the latter is a junior synonym of the former after detail comparison of the holotypes and the original descriptions of both species. A new specimen of the genus collected from off Ibaraki Prefecture, Pacific coast of Japan, was also identified as E. tanneri. Because morphological characters of E. tanneri have been poorly known, the species is redescribed in detail, mainly based on the newly collected specimen.
  • OHASHI SHIMPEI, IMAMURA HISASHI, YABE MAMORU
    魚類学雑誌 59 (2) 135 - 139 0021-5090 2012/11 [Refereed][Not invited]
  • OHASHI SHINPEI, IMAMURA HISASHI, YABE MAMORU
    Species Divers 日本動物分類学会 17 (2) 169 - 172 1342-1670 2012/11 [Refereed][Not invited]
     
    Two specimens of a rare ophidiid fish, Barathrites iris Zugmayer, 1911, were collected from the abyssal Pacific Ocean, off Kagoshima Prefecture, southern Japan. They agree with the diagnosis of Barathrites in having two pelvic-fin rays, five to six long gill rakers on the anterior gill arch, and a small head (33.5-33.8% of pre-anal-fin length) and eye (1.6-1.8% standard length, SL). Additionally, they can be separated from B. parri Nybelin, 1957, the only other known species of the genus, by their lack of basibranchial tooth patches, smaller eye (10.7-12.3% head length), and shorter pre-dorsal-fin region (17.1-18.9% SL). Previously B. iris was said to differ from B. parri in the number of branchiostegal rays (six versus seven, respectively), but one of the present specimens of B. iris (413mm SL) has seven branchiostegal rays on the left side and six on the right. Earlier workers have suggested the occurrence of Barathrites in the Pacific Ocean, but no documented records from this ocean appear to exist. This study confirms the occurrence of Barathrites and its type species B. iris in the Pacific Ocean.
  • CHAIYAPO MONRUEDEE, IMAMURA HISASHI, YABE MAMORU
    Species Divers 17 (2) 161 - 167 1342-1670 2012/11 [Refereed][Not invited]
  • MOTOMURA HIROYUKI, KANEHIRA NAOKO, IMAMURA HISASHI
    Species Divers 日本動物分類学会 17 (2) 145 - 150 1342-1670 2012/11 [Refereed][Not invited]
     
    A poorly known scorpionfish (Scorpaenidae), Phenacoscorpius eschmeyeri Parin and Mandrytsa, 1992, has been known only from the holotype from the Sala y Gomez Ridge, southeastern Pacific Ocean. Two new specimens of the species, collected from the Nazca Ridge, near the type locality, and found in the fish collection of the Hokkaido University Museum, are described in detail. The holotype was also reexamined. The two diagnostic characters of the species given in the original description to separate it from a related congener, Phenacoscorpius adenensis Norman, 1939, were found to be invalid, but a new series of diagnostic characters was found. A revised diagnosis of the species is thereupon provided. A color photograph of P. eschmeyeri when fresh is published for the first time.
  • Hisashi Imamura
    ZOOTAXA (3450) 23 - 32 1175-5326 2012/09 [Refereed][Not invited]
     
    After the original description, Platycephalus macrocephalus Weber, 1913 has been rarely treated as a valid species and its taxonomic status has been unclear. It was revealed here that seven syntypes of the species belong to two species and four of them are identical with Onigocia grandisquama (Regan, 1908) but the remaining three specimens are identified as a distinct species of Onigocia Jordan & Thompson, 1913, which has been mistakenly identified as Onigocia macrolepis (Bleeker, 1854) by several authors. One of the three specimens illustrated in the original description is designated as the lectotype of the species. Onigocia macrocephala is separable from its other congeners in having 21-23 (mode 22) pectoral fin rays, 9-10 caudal fin rays, 1 + 4-6 = 5-7 (mode 6) gill rakers, a larger head (38.8-42.3% SL), a single ocular flap present and usually extending slightly beyond the posterior margin of the orbit, a few or several small and short papillae on the posteromedial portion of the eye in larger specimens, the upper iris lappet short and branched, the lachrymal with two distinct antrorse spines anteriorly, a notch on the suborbital ridge below the eye, and no interopercular flap.
  • Yuki Nagano, Hisashi Imamura, Mamoru Yabe
    ICHTHYOLOGICAL RESEARCH 59 (3) 255 - 263 1341-8998 2012/07 [Refereed][Not invited]
     
    Validity of a ghost flathead, Hoplichthys regani Jordan 1908, which has sometimes been regarded as a junior synonym of Hoplichthys gilberti Jordan and Richardson 1908, was evaluated. We conclude that H. regani is a valid species from comparison of specimens of both species, including the name-bearing types. Hoplichthys regani can be distinguished from H. gilberti by the length of the longest free pectoral fin ray and length of each dorsal fin spine in males. We also redescribe H. regani and discuss its authorship, following the International Code of Zoological Nomenclature.
  • ODANI KENJI, IMAMURA HISASHI
    北海道大学水産科学研究い報 北海道大学大学院水産科学研究院 61 (2/3) 49 - 63 1346-1842 2011/12 [Not refereed][Not invited]
     
    Examination of taxa closely related to the family Leptoscopidae resulted in 61 apomorphic characters recognized within the family, based on morphological comparisons with the suborder Percoidei, the following being determined as autapomorphic for the former: U-shaped arrangement of infraorbitals; dermosphenotic fused with sphenotic; laminar process present on dorsalsurface of ethmoid; medially-directed palatine process; and adductor mandibulae section A1 with two tendons inserted laterally and medially onto maxilla. In addition, presence of the rectus dorsalis 3 muscle (rare among Perciformes), is also considered tosupport leptoscopid monophyly. The trachinoid family Creediidae was the inferred sister group of Leptoscopidae, based on the sharing of 43 apomorphies, including two rare perciform characters (absence of pterosphenoid and presence of rectus dorsalis 2). It was also inferred that Leptoscopidae plus Creediidae form a monophyletic group with Trichonotidae and the percophid subfamily Hemerocoetinae, an inference supported by 17 apomorphies, including four rare characters found in only several perciform taxa (ligament present between lower jaw and hyoid arch, ectopterygoid rod-like, ligament present between posttemporal and epiotic, and pelvic bone anterior cartilages fused), although the taxa most closely-related to the group have not yet been determined.
  • Tomoyuki Yamanaka, Hisashi Imamura, Tetsuo Yoshino
    ZOOTAXA (3131) 63 - 68 1175-5326 2011/12 [Refereed][Not invited]
     
    The validity and authorship of Parapercis elongata are discussed. Although Fourmanoir (1967) has been considered to be the author of P. elongata, Fourmanoir (1965) satisfies the nomenclatural requirements associated with the availability of species names and P. elongata Fourmanoir, 1965 has priority over P. elongata of Fourmanoir, 1967. Although the holotype of P. elongata was not able to be conclusively determined, no significant differences were recognized between the original description of P. elongata and the holotype and non-types of Parapercis alboguttata (Gunther, 1872). Accordingly, P. elongata Fourmanoir, 1965 is determined to be a junior synonym of P. alboguttata.
  • Hisashi Imamura
    ICHTHYOLOGICAL RESEARCH 58 (4) 393 - 397 1341-8998 2011/11 [Refereed][Not invited]
     
    Taxonomic status and type specimens of Platycephalus bataviensis Bleeker 1853, described based on two syntypes (110 and 140 mm TL) from Batavia (= Jakarta), are discussed. Four platycephalid specimens have been recognized as possible syntype(s) of P. bataviensis. Of them, a specimen of 140.5 mm TL deposited at Mus,um National d'Histoire Naturelle, Paris, identified as Inegocia japonica, is regarded to be the larger syntype and is designated as the lectotype of P. bataviensis in this study, while the paralectotype of the species is not identified. As a result, P. bataviensis becomes a junior synonym of I. japonica.
  • Hisashi Imamura
    ZOOTAXA (3066) 52 - 60 1175-5326 2011/10 [Refereed][Not invited]
     
    A replacement name, Onigocia sibogae, is given for a platycephalid fish, Platycephalus grandisquamis Weber, 1913, being preoccupied by Platycephalus grandisquamis Regan, 1908. Although this species has been considered to be conspecific with Onigocia oligplepis (Regan, 1908), it was revealed that its five extant syntypes include three species and one of them is a distinct species from congeners of the genus, including O. oliglepis. To avoid taxonomic confusion, the lectotype (ZMA 112434, 51.2 mm SL) of O. sibogae is designated here. Onigocia sibogae differs from seven congeners in having usually I+VII-11 dorsal and 11 anal fin rays, eight caudal fin rays, 30-31 lateral line scales, anterior two or three scales with spine, three scales between second dorsal fin and lateral line, no ocular and interopercular flaps, upper iris lappet usually finely crenate, two or three antrorse lachrymal spines, usually no spines on the inner ridge of the lachrymal, 2-5 preocular spines, no notch on the suborbital ridge below the eye, suborbital ridge serrated by 16-26 small spines, and 24 distinct blackish spots on middle and posterior portions of the pelvic fin rays.
  • Hisashi Imamura, Taichi Nagao
    ICHTHYOLOGICAL RESEARCH 58 (2) 166 - 169 1341-8998 2011/04 [Refereed][Not invited]
     
    Silurus imberbis Gmelin 1789 is a replacement name for Silurus inermis Houttuyn 1782, a primary junior homonym of Silurus inermis Linnaeus 1766. Although S. imberbis has recently been regarded as a junior synonym of Silurus asotus Linnaeus 1758, it is considered here to be conspecific with Inegocia japonica (Cuvier in Cuvier and Valenciennes 1829), based on a comparison of the original description of S. inermis Houttuyn with specimens of I. japonica. Although S. imberbis takes priority over I. japonica, an argument for a "reversal of precedence" of the International Code of Zoological Nomenclature is presented, establishing I. japonica as the valid name for the species. Although "Platycephalus inermis Jordan and Evermann 1902" has been regarded as an available name, it is not considered to be available.
  • Tatsuya Kaga, Hisashi Imamura, Kazuhiro Nakaya
    ICHTHYOLOGICAL RESEARCH 57 (4) 367 - 372 1341-8998 2010/11 [Refereed][Not invited]
     
    A new species of sand whiting, Sillago (Sillago) caudicula, is described based on four specimens collected from Oman, the Indian Ocean. It is easily distinguishable from its four known members of the subgenus Sillago by having a smaller head (29.0-30.1% in standard length), 23-24 soft anal fin rays, 35-36 total vertebrae, body depth at the origin of the second dorsal fin slightly deeper than that at the origin of the first dorsal fin, first and second hypurals fused (in adult) or narrowly separated (in young), third and fourth hypurals fused, and 11 dusky midlateral spots on the body.
  • TASHIRO FUMIHITO, IMAMURA HISASHI, YABE MAMORU
    魚類学雑誌 The Ichthyological Society of Japan 57 (2) 167 - 172 0021-5090 2010/11 [Refereed][Not invited]
     
    Ninety-nine synaphobranchid specimens, collected from Japanese waters between Hokkaido and Fukushima Prefectures, were identified as Ilyophisnigeli Shcherbachev and Sulak in Sulak and Shcherbachev, 1997 on the basis of the following combination of characters: body scaled; 5 or 6 supraorbital pores; 1or 2 frontal pores; 140-152 total vertebrae; 80-113 total lateral line pores, lateral line ending well anterior to tip of tail; and gill slits horizontal or slightly oblique. Originally described from nine specimens collected from the Pacific slope off Japan, the species, which has been overlooked by Japanese ichthyologists, is redescribed on the basis of the newly-collected specimens. A new standard Japanese name, "Yuki-hora-anago" is proposed for the species.
  • IMAMURA HISASHI, AIZAWA MASAHIRO, SHINOHARA GENTO
    Bull Natl Mus Nat Sci Ser A Zool National Museum of Nature and Science (Supplement 4) 1 - 7 1881-9052 2010/03 [Refereed][Not invited]
  • IMAMURA HISASHI
    Bull Natl Mus Nat Sci Ser A Zool 4 (Supplement 4) 21 - 29 1881-9052 2010/03 [Refereed][Not invited]
  • 鶴岡 理, 今村 央, 矢部 衞
    Bulletin of fisheries sciences, Hokkaido University 北海道大学大学院水産科学研究院 = Research Faculty of Fisheries Sciences, Hokkaido University 60 (1) 19 - 21 1346-1842 2010 [Not refereed][Not invited]
     
    Seven specimens of a sebastolobid fish, Sebastolobus alascanus Bean, 1890, were collected from the western North Pacific, off northern Honshu Island, Japan. In the waters around Japan, this species had been mainly reported from the Sea of Okhotsk, off Abashiri, Hokkaido and from the Pacific side of the Kuril Islands. This study represents the record of the species from northern Honshu Island, Japan, as well as the southern-most record in the western North Pacific.
  • Hisashi Imamura, Leslie W. Knapp
    ZOOTAXA (2271) 57 - 63 1175-5326 2009/10 [Refereed][Not invited]
     
    A new plataycephalid, Platycephalus orbitalis, is described on the basis of specimens collected in the Indian Ocean off the coast of Western Australia at depths of 50-144 m. The new species had been mistakenly identified as P. marmoratus, which is now known to be restricted to eastern Australia. Several morphological characters (e. g, 65-68 pored scales in lateral line, snout and interorbit naked, and caudal fin blackish with white posterior margin) can separate Platycephalus orbitalis sp. nov. and P. marmoratus from the other 14 congeners. In addition, Platycephalus orbitalis sp. nov. differs from P. marmoratus in having the margin of the interopercle scalloped, skinny sensory tubes on the infraorbitals, the preopercle well developed and mostly covering the cheek region, and the body and head lacking distinct large spots and bands dorsally.
  • ODANI KENJI, IMAMURA HISASHI
    北海道大学水産科学研究い報 北海道大学大学院水産科学研究院 = Research Faculty of Fisheries Sciences, Hokkaido University 59 (2) 43 - 46 1346-1842 2009/08 [Not refereed][Not invited]
     
    A platycephalid, Suggrundus meerdervoortii (Bleeker, 1860) (HUMZ 173209, 21.8 mm SL), and a gobiid, Clariger papillosus Ebina, 1934 (HUMZ 200854, 18.5 mm SL) were collected from off the southern coast of the Oshima Peninsula, Hokkaido, Japan, in 2000 and 2007, respectively. In Japan, the former species has been known from the East China Sea to south of Aomori Prefecture and the latter species from Honshu to Kyushu including Sado Island and Izu-Oshima. These represent the first records of the species from Hokkaido and their northern-most records in Japan.
  • Hisashi Imamura, Tetsuo Yoshino
    ICHTHYOLOGICAL RESEARCH 56 (3) 308 - 313 1341-8998 2009/07 [Refereed][Not invited]
     
    The authorship of Platycephalus japonicus and Platycephalus crocodilus is researched. Although many authors have considered that the authorship of these flatheads can be attributed to Tilesius (1812), we consider that Cuvier in Cuvier and Valenciennes [ex Tilesius] (1829) has valid authorship of them. Platycephalus isacanthus, Platycephalus borboniensis and Platycephalus guttatus were also established by Cuvier in the same publication. The conspecificity of these three species and the precedence of P. japonicus are reconfirmed in this study. Although many authors have recognized the validity of P. guttatus, its holotype is identical to P. crocodilus. We also establish the precedence of P. crocodilus over P. guttatus.
  • KIM BYUNG-JIK, KIM IK-SOO, NAKAYA KAZUHIRO, YABE MAMORU, CHOI YOUN, IMAMURA HISASHI
    北海道大学水産科学研究い報 北海道大学大学院水産科学研究院 = Research Faculty of Fisheries Sciences, Hokkaido University 59 (1) 7 - 36 1346-1842 2009/03 [Not refereed][Not invited]
     
    Jeju Island, being located off southwestern coast of the Korean Peninsula, is the largest volcanic island in Korea. The marine environment around Jeju Island is highly complicated, and provides affluent biodiversity of fishes. A new list of the fishes of Jeju Island, including a total of 665 species, is given on the bases of both 348 voucher specimens and the related references to the ichthyofauna of Jeju Island.
  • Hisashi Imamura, Leslie W. Knapp
    ZOOTAXA (2008) 23 - 28 1175-5326 2009/02 [Refereed][Not invited]
     
    A new species of platycephalid, Onigocia lacrimalis, is described on the basis of specimens collected from the Chesterfield Islands (Coral Sea) and Norfolk Ridge (Tasman Sea), at depths of 111-330 m. Onigocia lacrimalis differs from the six congeners of the genus in having 12-13 (usually 12) second dorsal-fin rays, 12 anal-fin rays, 21-25 pectoral-fin rays, 8 branched caudal-fin rays, anterior 2-4 scales of the lateral line with a spine, and a single preocular spine, and in lacking gill rakers on the upper arch, ocular and interopercular flaps, and distinct antrorse lachrymal spines.
  • Hisashi Imamura
    ICHTHYOLOGICAL RESEARCH 55 (4) 399 - 406 1341-8998 2008/11 [Refereed][Not invited]
     
    The type specimens of platycephalid Platycephalus endrachtensis Quoy and Gaimard 1825 are regarded as being conspecific with Platycephalus arenarius Ramsay and Ogilby 1886, so the latter becomes a junior synonym. This species is characterized as having a caudal fin with four or more longitudinal dark bands and lacking a yellow blotch. It is also found that Platycephalus westraliae (Whitley 1938), which had been considered to be a junior synonym of Platycephalus bassensis Cuvier 1829, is a valid species. Specimens that recently had been mistakenly identified as "P. endrachtensis,'' having the caudal fin with three or four longitudinal dark bands and a yellow blotch on the upper lobe, should be referred to P. westraliae.
  • Satoshi Ikeda, Hisashi Imamura, Kazuhiro Nakaya
    ICHTHYOLOGICAL RESEARCH 55 (4) 356 - 366 1341-8998 2008/11 [Refereed][Not invited]
     
    Two rare eelpouts, Lycodes microporus Toyoshima 1983 and Lycodes ocellatus Toyoshima 1985, are redescribed, based on their type specimens and non-type specimens recently collected from Japan. Several disagreements were recognized between the original descriptions and the types of these species. The additional non-type specimens expand knowledge of the intraspecific variation of these species. Previously suggested synonymy between L. microporus and L. obscurus was reconfirmed.
  • Nozomi Ishii, Hisashi Imamura
    ICHTHYOLOGICAL RESEARCH 55 (2) 148 - 161 1341-8998 2008/05 [Refereed][Not invited]
     
    The phylogenetic relationships of the family Congiopodidae are inferred based on morphological characters. The monophyly of this family is supported by 13 unambiguous apomorphic characters, including four autapomorphies among the superfamily Scorpaenoidea. The Congiopodidae shares 26 apomorphic characters with other scorpaenoid taxa, and these characters are considered to also support the monophyly of the family. Upon completion of the phylogenetic analysis using the characters in 39 transformation series, it was assumed that the family is unambiguously supported by five characters (and also by three and one characters when ACCTRAN and DELTRAN are used, respectively) and is branched into two major clades, including Congiopodus and Alertichthys plus Zanclorhynchus, respectively. Based on the phylogenetic relationships, a new classification, recognizing two subfamilies (Congiopodinae and Zanclorhynchinae) in the family Congiopodidae, is proposed. The genus Perryena, that was recently inferred being closely related to the Tetrarogidae (although many authors included it in the Congiopodidae), is provisionally placed into the Congiopodidae as incertae sedis.
  • ANDERSON M.ERIC, IMAMURA HISASHI
    Bull Natl Mus Nat Sci Ser A Zool National Museum of Nature and Science (Supplement 2) 59 - 67 1881-9052 2008/03 [Refereed][Not invited]
  • IMAMURA HISASHI, SHINOHARA GENTO
    Bull Natl Mus Nat Sci Ser A Zool National Museum of Nature and Science (Supplement 2) 21 - 24 1881-9052 2008/03 [Refereed][Not invited]
  • IKEDA SATOSHI, IMAMURA HISASHI, NAKAYA KAZUHIRO
    魚類学雑誌 The Ichthyological Society of Japan 54 (2) 209 - 218 0021-5090 2007/11 [Refereed][Not invited]
     
    Twenty specimens of an eelpout, Lycodes uschakovi, were collected from off Monbetsu, north-eastern Hokkaido on the coast of the Okhotsk Sea, and four specimens of Lycodes concolor from around Kitami-Yamato Bank in the Okhotsk Sea. Lycodes uschakovi is characterized by a scaleless belly, submental crests ill-developed and united anteriorly, lateral line mid-lateral in position, and body grey or greyish pink with 8-11 distinct or indistinct transverse white bars extending onto dorsal fin. Lycodes concolor is characterized by 22 pectoral fin rays, scaleless predorsal area, submental crests moderately developed and not united anteriorly, lateral line ventral, distantly spaced neuromasts on the mid-lateral part of the body, body and head uniformly blackish brown, and nostril tube brown. These two species are described in detail and reported as the first records from Japan.
  • Hisashi Imamura
    ICHTHYOLOGICAL RESEARCH 54 (3) 303 - 307 1341-8998 2007/08 [Refereed][Not invited]
     
    A new platycephalid, Rogadius mcgroutheri, is described on the basis of the specimens collected from eastern Australia and New Caledonia. Rogadius mcgroutheri is distinguished from other congeners by 11 second dorsal fin rays usually, 4 or 6-8 unbranched lower pectoral fin rays, larger orbital diameter, usually single preocular spine lacking the accessory spines on the anterior base, short antrorse preopercular spine, tooth band on palatine narrow, with 2 irregular tooth rows, body with indistinct or somewhat distinct brown blotches, and caudal fin with dark brown spots and bands.
  • IMAMURA HISASHI, YOSHINO TETSUO
    Species Divers 12 (2) 83 - 87 1342-1670 2007/06 [Refereed][Not invited]
  • IMAMURA HISASHI, YOSHINO TETSUO
    Bull Natl Mus Nat Sci Ser A Zool National Museum of Nature and Science (Supplement 1) 81 - 100 1881-9052 2007/03 [Refereed][Not invited]
  • Gento Shinohara, Hisashi Imamura
    Ichthyological Research 54 (1) 92 - 99 1341-8998 2007/02 [Refereed][Not invited]
  • Hisashi Imamura, Tetsuo Yoshino
    RAFFLES BULLETIN OF ZOOLOGY 93 - 100 0217-2445 2007/01 [Refereed][Not invited]
     
    A new pinguipedid genus, Ryukyupercis, was established based on Parapercis gushikeni Yoshino, 1975, from the reconstructed phylogenetic relationships of the family Pinguipedidae. Ryukyupercis new genus is inferred to be nested within the Family Pinguipedidae and is the sister group of the monophyletic group comprising of the genus Kochichthys Kamohara, 1960 and Parapercis Bleeker, 1863. The new genus is easily separable from the other five genera of Pinguipedidae (i.e., Kochichthys, Parapercis, Pinguipes Cuvier, 1829, Prolatilus Gill, 1865 and Pseudopercis de Miranda-Ribeiro, 1903) by having a combination of the following 25 characters: 6 dorsal fin spines; 23 - 24 pectoral fin rays; no iris lappet; 4 - 6 teeth on vomer, palatine and ectopterygoid; endopterygoid and ectopterygoid autogenous; posteroventral margin of opercle very concave; beryciform foramen absent; cartilage on posterior margin of lowermost actinost extending ventrally; cartilaginous tip of elongate anterior limb of coracoid connected with the inner portion of the lateral flange of the cleithrum; the lowermost pectoral fin ray branched or unbranched; a single supraneural (= first supraneural); first dorsal pterygiophore supporting two spines; hemal arch of anterior caudal vertebrae large; 4 or 5 anal fin pterygiophores anterior to first hemal spine; 3 epurals; posterior portion of adductor mandibulae section 2 (A2) connected to preopercle only; adductor mandibulae section w extending to medial surface of suspensorium; anterior element of levator operculi connected with hyomandibula; gill-arch addutores I - III absent; protractor pectoralis comprising sheet-like element only; extensor proprius inserted on pelvis; adductor dorsalis present and scaled area of dorsal surface of head reaching to interorbital region.
  • IMAMURA HISASHI
    Species Divers 日本動物分類学会 11 (4) 295 - 306 1342-1670 2006/11 [Refereed][Not invited]
     
    The taxonomic characters of the marbled flathead, Platycephalus marmoratus Stead, 1908, are described and evaluated. In addition to the marbled body and dark brown to black caudal fin, the following combination of characters separates it from the other 14 species of the genus Platycephalus: 13 second dorsal and anal fin rays; 63-70 scales in the lateral line, with all pored scales lacking spines; snout and interorbit naked; no strong canine teeth on the jaws, palatines, and vomer; interopercular flap absent; and skinny sensory tubes on the suborbitals and preopercle partially covering the cheek region. It has been confirmed that the type series of the species was composed of the holotype and one paratype, although the paratype is presumably no longer extant.
  • ODANI KENJI, IMAMURA HISASHI, NAKAYA KAZUHIRO
    Species Divers 日本動物分類学会 11 (4) 277 - 294 1342-1670 2006/11 [Refereed][Not invited]
     
    Osteological characters of the percophid fish, Percophis brasiliensis Quoy and Gaimard, 1825, the sole member of the subfamily Percophinae, are described in detail. Fifteen apomorphic characters are recognized in this species through morphological comparison with the Percoidei. Of them, the following five characters are determined to be autapomorphic for this species and its subfamily among the Percophidae: urohyal greatly depressed, complex in shape; first pharyngobranchial reduced and completely ossified; Baudelot's ligament branched distally; five supraneurals or ray-less proximal-middle pterygiophores present; and body cavity extending far posteriorly. Percophis brasiliensis is considered to be closely related to the percophid subfamily Bembropinae, because they share three apomorphic characters (presence of a lower backwardly directed opercular spine crossing the subopercle, absence of a tooth plate on the second epibranchial, and absence of supernumerary rays on the ventral portion of the first anal proximal-middle pterygiophore). Although the monophyly of the Percophidae is unconfirmed, because of the lack of plausible synapomorphies, the family is provisionally defined here by the following five apomorphic characters: exoccipital condyles separated in the midline; parasphenoid and pterosphenoid connected; anteroventral portion of second anal proximal pterygiophore with a soft ray; uroneural single; and fewer than 15 branched caudal fin rays present.
  • IMAMURA HISASHI, KOMADA MAYU, YOSHINO TETSUO
    Coast Mar Sci 東京大学 30 (1) 293 - 300 1349-3000 2006/04 [Not refereed][Not invited]
     
    The platycephalids collected from Nha Trang, Vietnam were studied taxonomically to record seven species, Elates ransonnetii (Steindachner 1876), Inegocia japonica (Tilesius 1812), Onigocia macrolepis (Bleeker 1854), Platycephalus cultellatus Richardson 1846, Rogadius asper (Cuvier 1829), R. serratus (Cuvier 1829) and R. tuberculatus (Cuvier 1829). Elates ransonnetii and R. serratus are newly recorded from Nha Trang. Platycephalus cultellatus and R. asper have been confused with P. indicus (Linnaeus 1758) and R. pristiger (Cuvier 1829) respectively by many authors and the specimens of P. cultellatus and R. asper represent the reliable first record of these species from Nha Trang. The key characters separating R. asper and R. pristiger are given for the first time. Although the maximum total length of R. tuberculatus was reported to be ca. 14cm, our largest specimen of the species attains ca.18cm.
  • H Imamura, SM Shirai, M Yabe
    ICHTHYOLOGICAL RESEARCH 52 (3) 264 - 274 1341-8998 2005/08 [Refereed][Not invited]
     
    The phylogenetic relationships of the family Trichodontidae and suborder Cottoidei (and zoarcoid Bathymasteridae) are reconstructed morphologically. The monophyly of the Trichodontidae, Cottoidei, and Zoarcoidei is unambiguously supported by 14 synapomorphies, including 1 newly recognized (and also 4 synapomorphies when ACCTRAN is accepted). It is assumed that the Trichodontidae is deeply nested within the Cottoidei, and the family and Cottoidea plus Cyclopteroidea have a sister relationship, supporting a previously inferred molecular phylogenetic hypothesis. We propose that the Trichodontidae is placed into the cottoid superfamily Trichodontoidea.
  • IMAMURA HISASHI, ISHIGURO AKI, NAKAYA KAZUHIRO
    魚類学雑誌 日本魚類学会 52 (1) 47 - 50 0021-5090 2005/05 [Refereed][Not invited]
  • IMAMURA HISASHI, SHINOHARA GENTO, SHIOGAKI MASARU
    Species Divers 10 (1) 1 - 6 1342-1670 2005/02 [Refereed][Not invited]
  • SHINOHARA GENTO, IMAMURA HISASHI
    タクサ 日本動物分類学会 (18) 20 - 29 1342-2367 2005/02 [Refereed][Not invited]
     
    An overview of "scorpaeniform" fish phylogenetic studies is presented. Imamura and Shinohara (1998) reviewed previous phylogenetic studies of the "Scorpaeniformes" and stated that monophyly was unlikely. Since 1998, 4 papers (1 morphological and 3 molecular) have been published, which independently show the polyphyletic origins of this group. The present paper provides an outline of Imamura and Shinohara's (1998) paper, and gives summaries of the 4 subsequent papers. Evidence for polyphyly presented in the 4 papers is discussed. Suggestions for future areas of "scorpaeniform" taxonomic and evolutionary research are presented.
  • Gento Shinohara, Hisashi Imamura
    Ichthyological Research 52 (1) 64 - 76 1341-8998 2005/02 [Refereed][Not invited]
     
    Anatomical characters for two species of the orbicular velvetfishes (Caracanthus) are described, and the phylogenetic position of the genus among the superfamily Scorpaenoidea is estimated cladistically on the basis of morphological characters belonging to 112 transformation series. Caracanthus is nested within the family Scorpaenidae, having close relationships with Taenianotus and Pteroidichthys. Validity of the family Caracanthidae was not supported, Caracanthus being included within the Scorpaenidae. ©The Ichthyological Society of Japan 2005.
  • LW Knapp, H Imamura
    PROCEEDINGS OF THE BIOLOGICAL SOCIETY OF WASHINGTON 117 (4) 545 - 550 0006-324X 2004/12 [Refereed][Not invited]
     
    Based on two specimens taken by bottom trawl from northwestern Australia, Sunagocia sainsburyi differs from its congeners in having: 4-5 preorbital spines; 5 total gill rakers on first arch; a bony expansion of suborbital ridge base on cheek bearing 1-2 rows of small spines; and no papillae on upper surface of eye. It also tends to have more spines on the ethmoid and on the supraorbital and suborbital ridges. A table compares features of the new species to the other three species currently included in the genus Sunagocia.
  • T Kawai, H Imamura, K Nakaya
    ICHTHYOLOGICAL RESEARCH 51 (2) 126 - 130 1341-8998 2004/05 [Refereed][Not invited]
     
    A new peristediid, Paraheminodus kamoharai, is described from three specimens (106.9-114.8 mm SL) collected from the Sulu Sea, the Philippines. The new species is easily distinguished from its congeners (Paraheminodus laticephalus and P. murrayi) in having 33 bony plates in the upper lateral row, the 24-25th to 30th bony plate each in the upper lateral row with a forwardly directed spine, 17-19 gill rakers on the lower limb, a long slender rostral projection (43.4-47.0% of head length), and short upper (41.1-42.3%) and lower jaws (36.5-37.2%).
  • T Kawai, H Imamura, K Nakaya
    ICHTHYOLOGICAL RESEARCH 51 (1) 73 - 76 1341-8998 2004/02 [Refereed][Not invited]
     
    Paraheminodus kochiensis Kamohara, 1957 (family Peristediidae), has been regarded by most workers as a junior synonym of P. murrayi (GUnther, 1880), but sufficient argument for combining the two species has not been made. A detailed comparison of the type and non-type material of P. kochiensis and P. murrayi revealed no significant differences between the two; thus, their synonymy is hereby confirmed. Paraheminodus murrayi and P. laticephalus (Kamohara, 1952) are clearly distinguished by the morphology of the upper jaw teeth, length of the upper jaw, and by the number of barbels.
  • TAKAHASHI MASAFUMI, IMAMURA HISASHI, NAKAYA KAZUHIRO
    北海道大学水産科学研究い報 北海道大学 54 (1/2) 17 - 20 1346-1842 2003/07 [Not refereed][Not invited]
  • KAWAI TOSHIO, IMAMURA HISASHI, NAKAYA KAZUHIRO
    北海道大学水産科学研究い報 北海道大学 54 (1/2) 13 - 16 1346-1842 2003/07 [Not refereed][Not invited]
  • SAKASHITA MITSUHIRO, IMAMURA HISASHI, YOSHINO TETSUO
    魚類学雑誌 日本魚類学会 50 (1) 67 - 70 0021-5090 2003/05 [Refereed][Not invited]
  • KAWAI TOSHIO, IMAMURA HISASHI, ISHITO YOSHIO, NAKAYA KAZUHIRO
    北海道大学水産科学研究い報 北海道大学 53 (3) 83 - 86 1346-1842 2002/12 [Not refereed][Not invited]
     
    2002年に青森県八戸市沖から各1個体のアナゴ科魚類およびキンメダイ科魚類が採集された。これらの標本を分類学的に詳細に調べた結果、ゴテンアナゴariosoma meekiおよびナンヨウキンメBeryx decadactylus Cuvier、1829と査定された。ゴテンアナゴは太平洋およびインド洋に分布し、日本では南日本各地、新潟県、岩手県などから報告されている。。ナンヨウキンメは世界の熱帯から温帯にかけての深海に分布する。本種は多くの著者によって南日本から報告されており、北日本では新潟県および岩手県からの2報告例しか知られていない。本研究では八戸市沖で採集されたゴテンアナゴおよびナンヨウキンメを青森県からの初記録種とするとともに、これらの種の北限記録として報告する。
  • MIYAHARA HAJIME, IMAMURA HISASHI, ISHITO YOSHIO, NAKAYA KAZUHIRO
    北海道大学水産科学研究い報 北海道大学 53 (3) 87 - 89 1346-1842 2002/12 [Not refereed][Not invited]
     
    ヤツメウナギ科のミツバヤツメEntosphenus tridentatusは日本では北海道、栃木県および高知県の3地域から報告されているが、いずれも淡水の海跡湖または河川からの記録であり、日本周辺の海域からの記録は佐藤の釧路沖から得られた本種の写真による報告に限られる。また、本種は日本での捕獲記録が少ないため、環境庁のレッドリストでは情報不足とされており、分布等の基礎的な情報の蓄積が必要とされている魚種である。このような状況下で、2001年1月に青森県沖の太平洋からミツバヤツメと同定される1個体のヤツメウナギ科の無顎類が採集された。したがって、ミツバヤツメの分布情報の蓄積を目的として、本標本を本海域からの初記録および日本周辺の海域からの2番目の記録として報告する。
  • ITO KEIKO, IMAMURA HISASHI, NAKAYA KAZUHIRO
    魚類学雑誌 49 (2) 143 - 146 0021-5090 2002/11 [Refereed][Not invited]
  • MIYAHARA HAJIME, IMAMURA HISASHI, ISHITO YOSHIO
    北海道大学水産科学研究い報 北海道大学 53 (1) 37 - 40 1346-1842 2002/03 [Not refereed][Not invited]
  • IMAMURA HISASHI, KITAGAWA DAIJI
    魚類学雑誌 46 (2) 105 - 108 0021-5090 1999/11 [Refereed][Not invited]
  • IMAMURA HISASHI, SHINOHARA GENTO
    魚類学雑誌 44 (2) 77 - 95 0021-5090 1997/11 [Refereed][Not invited]
  • Imamura Hisashi, Yabe Mamoru
    Bulletin of the Faculty of Fisheries, Hokkaido University 北海道大学 47 (2) 41 - 46 0018-3458 1996 [Not refereed][Not invited]

Books etc

  • 魚類分類学のすすめーあなたも新種を見つけてみませんかー
    今村 央 (Single work)
    海文堂出版 2019/06
  • Fishes of Ha Long Bay – the world natural heritage site in northern Vietnam
    KIMURA Seishi, IMAMURA Hisashi, NGUYEN Van Quan, PHAM Thuy Duong (Joint editor)
    2018
  • Fishes of the northern Johor Strait, Peninsular Malaysia
    IMAMURKIMURA Seishi, ARSHAD Aziz, IMAMURA Hisashi, GHAFFAR Mazlan AbdA Hisashi (Joint editor)
    Mie University, Universiti Putra Malaysia Press 2015
  • Deep sea fishes of Peru
    IMAMURA Hisashi (Editor)
    Japan Overseas Fishing Association 2009
  • 東北フィ ールド魚類図鑑
    今村 央 (Joint work)
    東海大学出版会 2008
  • 海の動物百科3 魚類II
    今村 央 (Joint work)
    朝倉書店 2007
  • 魚 の形を考える
    今村 央 (Contributor形から考えるカサゴ目の単系統性)
    東海大学出版会 2005
  • 日本動物大百科. 6 魚類
    今村 央 (Contributorコチ科)
    平凡社 1998
  • 山渓カラー名鑑: 日本の海水魚
    今村 央 (Contributorコチ科・ウバゴチ科・アカゴチ科・ヒメキチジ (ヒメキチジを 除く)・ハリゴチ)
    山と渓谷社 1997

Conference Activities & Talks

MISC

  • Tatsuta Naoki, Imamura Hisashi, Nakaya Kazuhiro, Kawai Toshio, Abe Takuzou, Sakaoka Keiichiro, Takagi Shogo, Yabe Mamoru  Memoirs of the Faculty of Fisheries Sciences, Hokkaido University  56-  (1)  1  -64  2014/05  [Not refereed][Not invited]
     
    A taxonomic examination of 3,108 specimens of mesopelagic fishes, collected around the Ogasawara Islands in December 2010 by a beam trawl net operated from the T/S Oshoro-maru, Hokkaido University, Japan, resulted in the recognition of 99 species representing 34 families and 65 genera. Descriptions are provided for all species, two of them〔 a stomiid Eustomias braueri Zugmayer, 1911 and linophrynid Haplophryne mollis (Brauer, 1902)〕 being new records for Japan. Three species, a stomiid Eustomias sp., trachipterid Desmodema sp. and oneirodid Oneirodes sp., could not be identified at the species level.
  • IMAMURA Hisashi  Ichthyological research formerly Japanese Journal of Ichthyology  52-  (2)  204  -205  2005/05/25
  • H Imamura, Y Machida, S Ohta  ICHTHYOLOGICAL RESEARCH  51-  (1)  84  -88  2004/02  [Not refereed][Not invited]
     
    The holotype of Lycenchelys melanostomias Toyoshima, 1983, the original description of L. brevimaxillaris Toyoshima, 1985, and 54 Lycenchelys specimens from the Okhotsk Sea and the Pacific off northern Japan were compared. Lycenchelys brevimaxillaris was distinguished from L. melanostomias in having 4 postorbital pores, pale-colored stomach, and smaller mouth in the original description (vs. 5 postorbital pores, dark stomach, and larger mouth in L. melanostomias). However, L. melanostomias has 4 or 5 postorbital pores, as recently pointed out. The coloration of the stomach of the L. melanostomias holotype and the new material is pale. Meristic counts and proportional measurements of the new material include those of the type specimens of both species. The length of upper jaw exhibits sexual dimorphism in L. melanostomias larger than ca. 170 mm TL: upper jaw reaching near posterior margin of pupil in males vs. near middle of eye in females. The L. brevimaxillaris holotype (female) agrees well with female L. melanostomias in this character. These facts indicate that L. melanostomias is a senior synonym of L. brevimaxillaris.
  • Species Diversity  9-  (1)  1  -36  2004  [Not refereed][Not invited]
  • A new species of Cocotropos(Actinopterygii:Teleostei:Aploactinidae)from South Africa, western Indian Ocean
    Species Diversity  9-  (3)  193  -200  2004  [Not refereed][Not invited]
  • IMAMURA Hisashi  Species Diversity  8-  (3)  301  -306  2003/08/31  
    The genus Sunagocia is established as a replacement name for the platycephalid fish genus Eurycephalus Imamura, 1996, which is preoccupied by the cerambycid beetle genus Eurycephalus Gray in Cuvier and Griffith, 1832. The genus currently contains three valid species : S. arenicola (Schultz, 1966), comb, nov., S. carbunculus (Valenciennes in Cuvier and Valenciennes, 1833), comb, nov., and S. otaitensis (Cuvier in Cuvier and Valenciennes, 1829), comb. nov. It is confirmed that Cuvier satisfied the nomenclatural requirements for availability of this last species, although several investigators have attributed the name to Parkinson, who made the unpublished drawing of S. otaitensis used in its original description and named the species. Two measurements, of head length and especially interorbital width, are helpful in distinguishing S. carbunculus, S. arenicola, and S. otaitensis from each other.
  • H Imamura, K Matsuura  ICHTHYOLOGICAL RESEARCH  50-  (3)  259  -269  2003/08  [Not refereed][Not invited]
     
    The phylogenetic relationships of the family Pinguipedidae plus the genus Cheimarrichthys von Haast, 1874, were studied to redefine the family, Based on a phylogenetic analysis using derived characters belonging to 21 transformation series, accepting the monophyly of Pinguipedidae plus Cheimarrichthys provisionally for the operational procedure of the analysis, it was hypothesized that Cheimarrichthys is not closely related to Parapercis Bleeker, 1863, although these genera had been considered as having a close affinity. Although the Pinguipedidae and Cheimarrichthys share nine derived characters, it was determined that these characters are also found in other trachinoid families. In addition, several families, such as the Leptoscopidae, Uranoscopidae, and Trichodontidae, have many more derived characters in common with Cheimarrichthys than the pinguipedids have with that genus. The conclusion drawn here is that it is not parsimonious to recognize the monophyly of the Pinguipedidae and Cheimarrichthys based on these nine derived characters, and that these characters are not compelling enough to link these groups. The redefined Pinguipedidae is proposed to include the following five genera: Parapercis, Prolatilus Gill, 1865, Pinguipes Cuvier, 1829, Pseudopercis de Miranda-Ribeiro, 1903, and Kochichthys Kamohara, 1960. Cheimarrichthys, excluded from the Pinguipedidae, is put into its own family, Cheimarrichthyidae.
  • H Imamura, G Shinohara  ICHTHYOLOGICAL RESEARCH  50-  (3)  233  -238  2003/08  [Not refereed][Not invited]
     
    A new species of aploactinid, Cocotropus keramaensis. is described based oil a single specimen collected off the Kerama Islands, southern Japan. This new species is separable from other known congeners in the following combination of characters: XII. 10 dorsal fill rays: II. 7 anal fill rays: 13 pectoral fin rays: 26 vertebrae: 4 + 8 - 12 gill rakers: five distinct preopercular spines upper jaw longer than the lachrymal single papilla on the posterior portion of the maxilla: outer edge of the lower jaw with four distinct papillae: first sensory pore of the lower jaw oil both sides fused: anterior tip of the isthmus reaching to the fifth sensory pore of the lower jaw: and anterior tour dorsal spines anterior to the third neural spine.
  • IMAMURA Hisashi, MATSUURA Keiichi  Species Diversity  8-  (1)  27  -33  2003/02/01  
    Six specimens of the pinguipedid fish Parapercis xanthozona (Bleeker, 1849) were collected from Amami-Oshima Island of the Ryukyu Islands in 1991 and 1994. This represents the first reliable record of the species from Japan. It is concluded that Percis pleurostigma Sauvage, 1891, which had been considered conspecific with P. xanthozona, is a junior synonym of Parapercis punctulata (Cuvier in Cuvier and Valenciennes, 1829). We concur with synonymizing Parapercis dorsonebulosa Martin and Montalban, 1935 with P. xanthozona ; this synonymy has been overlooked since 1951.
  • IMAMURA Hisashi, SHINOHARA Gento  Ichthyological Research  50-  (3)  233  -238  2003  [Not refereed][Not invited]
  • Ichthyological Research  (50)  233  -238  2003  [Not refereed][Not invited]
  • Ichthyological Research  (50)  259  -269  2003  [Not refereed][Not invited]
  • Ichthyological Research  50-  (3)  259  -269  2003  [Not refereed][Not invited]
  • M. Eric Anderson, Hisashi Imamura  Ichthyological Research  49-  (4)  355  -357  2002/11/25  [Not refereed][Not invited]
     
    Lycenchelys tohokuensis sp. nov. is described from five specimens, 199-270 mm SL. Unknown before 1997, specimens were collected along the Pacific side of the Tohoku coast, from off Aomori to Fukushima prefectures at depths of 543-709 m. The species differs from all congeners in the northwestern Pacific chiefly in the lack of pelvic fins, having a double lateral line configuration, relatively low vertebral counts, two rows of palatine teeth, and its head pore pattern. The new species does not appear to be closely related to any other northwestern Pacific Lycenchelys including the only other one without pelvic fins, Lycenchelys fedorovi Anderson and Balanov, 2000.
  • ME Anderson, H Imamura  ICHTHYOLOGICAL RESEARCH  49-  (4)  355  -357  2002/11  [Not refereed][Not invited]
     
    Lycenchelys tohokuensis sp. nov. is described from five specimens, 199-270 mm SL. Unknown before 1997, specimens were collected along the Pacific side of the Tohoku coast, from off Aomori to Fukushima prefectures at depths of 543-709 m. The species differs from all congeners in the northwestern Pacific chiefly in the lack of pelvic fins, having a double lateral line configuration, relatively low vertebral counts, two rows of palatine teeth, and its head pore pattern. The new species does not appear to be closely related to any other northwestern Pacific Lycenchelys including the only other one without pelvic fins, Lycenchelys fedorovi Anderson and Balanov, 2000.
  • IMAMURA Hisashi, NOBETSU Takahiro  Ichthyological Research  49-  (2)  156  -158  2002/05/24
  • Demise of the Scorpaeniformes (Actinopterygii: Percomorpha): an alternative phylogenetic hypothesis
    Bulletin of Fisheries Sciences, Hokkaido University  35-  (3)  107  -128  2002  [Not refereed][Not invited]
  • カサゴ目の解体に関する系統仮説
    北海道大学水産科学研究彙報  53-  (3)  107  -128  2002  [Not refereed][Not invited]
  • 魚類学雑誌  49(2), 143-146-  2002  [Not refereed][Not invited]
  • IMAMURA Hisashi, YABE Mamoru  Bulletin of Fisheries Sciences, Hokkaido University  35-  (3)  107  -128  2002  [Not refereed][Not invited]
  • オーストラリア西部から採集されたヒレナガカサゴ属の仔魚(共著)
    北海道大学水産科学研究彙報  52-  (1)  51  -53  2001  [Not refereed][Not invited]
  • IMAMURA Hisashi, YABE Mamoru  Bulletin of Fisheries Sciences, Hokkaido University  52-  (1)  51  -53  2001  [Not refereed][Not invited]
  • K Hoshino, H Imamura, K Amaoka  ICHTHYOLOGICAL RESEARCH  47-  (3)  293  -298  2000/08  [Not refereed][Not invited]
     
    Flatfish sexual dimorphism, including sexual dichromatism, has been reported on many occasions. For example, some bothids and paralichthyids have a wider interorbital space, stronger rostral and orbital spines, and/or longer pectoral fins in males than in females (e.g., Norman, 1934; Amaoka, 1969; van der Heiden and Mussot-Perez, 1992). Aside from sexual dichromatism known for one species (van der Heiden and Mussot-Perez, 1992), sexual dimorphism in the bothid genus Monolene Goode, 1880, has not been reported. In this paper we describe a unique form of pectoral fin sexual dimorphism in Monolene maculipinna Garman, 1899, an eastern Pacific species distributed from Costa Rica to Peru (Garman, 1899; Norman, 1934; Chirichigno, 1974; Hensley, 1995).
  • K Amaoka, H Imamura  ICHTHYOLOGICAL RESEARCH  47-  (3)  243  -247  2000/08  [Not refereed][Not invited]
     
    Monolene helenensis sp. nov, is described on the basis of seven specimens collected from the eastern tropical Atlantic Ocean. This new bothid flounder differs from all known congeners by the following combination of characters: 108-116 dorsal and 89-92 anal fin rays, 101-111 lateral line scales, 7-10 + 10-15 = 18-25 gill rakers, 10-12 + 37-38 = 48-50 vertebrae, body depth 2.58-2.77 in standard length, ocular side pectoral fin length 1.34-1.59 in head length and upper half of pectoral fin blackish.
  • H Imamura  ICHTHYOLOGICAL RESEARCH  47-  (3)  203  -222  2000/08  [Not refereed][Not invited]
     
    The phylogenetic position of the family Dactylopteridae is inferred cladistically. The family lacks a close relationship with the Scorpaeniformes, owing to the posterior extension of the infraorbital in the former not being homologous with the scorpaeniform suborbital stay. Monophyly of the Dactylopteridae and percoid family Malacanthidae is supported by 20 synapomorphies, the former having a sister relationship with the malacanthid genus Hoplolatilus supported by three synapomorphies. The former Dactylopteridae plus Malacanthidae are redefined as a percoid family, Dactylopteridae, being subdivided into the following four subfamilies: Branchiosteginae (including Branchiostegus and Lopholatilus), Malacanthinae (Caulolatilus and Malacanthus), Hoplolatilinae subfam. nov. (Hoplolatilus) and Dactylopterinae (Dactylopterus and Dactyloptena).
  • インド・太平洋から得られたコチ科魚類Onigocia bimaculataセホシオニゴチ(共著)
    (64)  1  -10  2000  [Not refereed][Not invited]
  • 東部太平洋産ダルマガレイ科魚類 Monolene macolipinna に見られたカレイ目における新しいタイプの性的二型(共著)
    47-  (3)  293  -298  2000  [Not refereed][Not invited]
  • 東部大西洋から得られたダルマガレイ科の一新類Monolene helenensis(共著)
    47-  (3)  243  -247  2000  [Not refereed][Not invited]
  • セミホウボウ科の系統的位置に関する-仮説および新分類体系の提唱
    47-  (3)  203  -222  2000  [Not refereed][Not invited]
  • Onigocia bimacolata, a new species of flathead fish (Scorpaeniformes : Platycephalidae) from the Indo-Pacific
    Special Publication of the J. L. B. Smith Institute of Ichthyology  (64)  1  -10  2000  [Not refereed][Not invited]
  • H Imamura, LW Knapp  ICHTHYOLOGICAL RESEARCH  46-  (2)  179  -183  1999/05  [Not refereed][Not invited]
     
    A new platycephalid Thysanophrys papillaris, is described on the basis of six specimens (78-121 mm SL) collected from the Andaman Sea and off northern Australia (Timor and Arafura Seas). This new species can be distinguished from other congeners by the following combination of characters: presence of a single short papilla on upper surface of eye, longer snout, smaller body scales, 11 second dorsal-fin rays and 12 anal-fin rays, presence of four or more suborbital spines usually, branched short iris lappet, ctenoid lateral-line scales and interopercle not extended posteroventrally.
  • 今村 央, 北川 大二  魚類学雑誌  46-  (2)  105  -108  1999  [Not refereed][Not invited]
  • アンダマン海と北部オーストラリアから得られたコチ科クロシマゴチ属の新種Thysanophrys papillaris(共著)
    46-  (2)  179  -183  1999  [Not refereed][Not invited]
  • Hisashi Imamura, Daiji Kitagawa  Japanese Journal of Ichthyology  46-  (2)  105  -108  1999  [Not refereed][Not invited]
  • H Imamura, LW Knapp  ICHTHYOLOGICAL RESEARCH  45-  (2)  165  -178  1998/05  [Not refereed][Not invited]
     
    The bembrid genus Bembras Cuvier is reviewed. Five species, B. japonica Cuvier, B. adenensis Imamura & Knapp and three undescribed species, were assigned to the genus. Type species of the genus, Bembras japonica is redescribed on the basis of 36 specimens including the holotype, and three new species, B. macrolepis, B. longipinnis and B. megacephala, previously misidentified as B. japonicus, are also described on the basis of specimens collected from Australia and Indonesia. Bembras macrolepis differs from its congeners by having large body scales, a long pectoral fin with 17-19 rays and a dark blotch on slightly upper portion to middle of margin, 14-15 anal-fin rays, small head and orbit, and caudal fin with a broad vertical dark band near posterior margin. Bembras longipinnis is distinguished from other members of the genus by having a slightly long pectoral fin with 17-19 rays and lacking a small black blotch near tip of upper rays, caudal fin with a large dark spot most intense in lower lobe, 1-2 gill rakers on upper gill arch, 13-14 anal-fin rays, slightly elong ated head and small orbit. Bembras megacephala is characterized by the following combination of characters: caudal fin with several irregular narrow vertical dark bands, small orbit, pectoral fin with 19-20 rays and lacking a small black blotch near tip of upper rays, head elongate, 2-4, gill rakers on upper gill arch, 15 anal-fin rays and small body scales. A key separating the five species of Bembras is given.
  • H Imamura, M Yabe  ICHTHYOLOGICAL RESEARCH  45-  (1)  53  -67  1998/02  [Not refereed][Not invited]
     
    The osteological development of the synanceiid, Inimicus japonicus, was described on the basis of five larvae and four juveniles (4.2-10.1 mm BL) reared in the laboratory. and two wild adult specimens. All bones, except for the basisphenoid, were formed in all larvae and juveniles, but fusions between the uppermost actinost and scapula, upper caudal plate and urostyle, and third preural centrum and hemal spine were not completed by 10.1 mm BL. Following comparison with the adult condition, a rod-like ossified bone without a tooth plate on the upper branchial arch of larvae and juveniles was considered homologous with the second pharyngobranchial. The number of epurals and length of the neural spine on the second preural centrum varied (unrelated to growth) and it is inferred that I. japonicus shows intraspecific variations in these bones.
  • カサゴ目魚類の系統分類学の総説(共著)
    国立科学博物館研究報告A類  24-  (3)  185  -212  1998  [Not refereed][Not invited]
  • Hisashi Imamura, Leslie W. Knapp  Ichthyological Research  45-  (2)  165  -178  1998  [Not refereed][Not invited]
     
    The bembrid genus Bembras Cuvier is reviewed. Five species, B. japonica Cuvier, B. adenensis Imamura & Knapp and three undescribed species, were assigned to the genus. Type species of the genus, Bembras japonica is redescribed on the basis of 36 specimens including the holotype, and three new species, B. macrolepis, B. longipinnis and B. megacephala, previously misidentified as B. japonicus, are also described on the basis of specimens collected from Australia and Indonesia. Bembras macrolepis differs from its congeners by having large body scales, a long pectoral fin with 17-19 rays and a dark blotch on slightly upper portion to middle of margin, 14-15 anal-fin rays, small head and orbit, and caudal fin with a broad vertical dark band near posterior margin. Bembras longipinnis is distinguished from other members of the genus by having a slightly long pectoral fin with 17-19 rays and lacking a small black blotch near tip of upper rays, caudal fin with a large dark spot most intense in lower lobe, 1-2 gill rakers on upper gill arch, 13-14 anal-fin rays, slightly elong ated head and small orbit. Bembras megacephala is characterized by the following combination of characters: caudal fin with several irregular narrow vertical dark bands, small orbit, pectoral fin with 19-20 rays and lacking a small black blotch near tip of upper rays, head elongate, 2-4 gill rakers on upper gill arch, 15 anal-fin rays and small body scales. A key separating the five species of Bembras is given.
  • オニオコゼの骨格形成(共著)
    45-  (1)  53  -67  1998  [Not refereed][Not invited]
  • Scorpaeniform fish phylogeny : an overview
    Bulletin of the National Science Museum, Series A  24-  (3)  185  -212  1998  [Not refereed][Not invited]
  • H Imamura  ICHTHYOLOGICAL RESEARCH  44-  (4)  425  -428  1997/11  [Not refereed][Not invited]
  • LW Knapp, H Imamura  PROCEEDINGS OF THE BIOLOGICAL SOCIETY OF WASHINGTON  110-  (3)  384  -387  1997/10  [Not refereed][Not invited]
     
    Platycephalus cantori Bleeker, 1879, P. maculosus Peters, 1869 and P. bobbosok Bleeker, 1853 are here regarded as junior synonyms of P. carbunculus Valenciennes in Cuvier & Valenciennes, 1833. Lectotypes are selected for P. cantori and P. maculosus.
  • H Imamura, M Sakashita  ICHTHYOLOGICAL RESEARCH  44-  (2)  119  -124  1997/05  [Not refereed][Not invited]
     
    A rare platycephalid, Onigocia grandisquama (Regan), is redescribed in detail from the holotype and an additional specimen collected from the Gulf of Thailand, western Pacific. The species is characterized by the following combination of characters: 11 anal fin rays, 32-34 lateral line scales, anteriormost 3-5 or 3-6 lateral line scales with a distinct spine, 1-2 preocular spines, broad and flat ocular flap, and long head (42.4-44.7% of standard length).
  • H Imamura, LW Knapp  ICHTHYOLOGICAL RESEARCH  44-  (1)  9  -14  1997/02  [Not refereed][Not invited]
     
    A new bembrid, Bembras adenensis, is described on the basis of specimens collected from the Gulf of Aden, western Indian Ocean. This species is easily distinguished from B. japonica, the only known congener of the genus, by the following combination of characters: larger orbital diameter, longer head length, pectoral-fin with a small black blotch near tip of upper rays, 3 gill rakers on upper gill arch, 19 pectoral-fin rays, and 15 anal-fin rays (vs. smaller orbital diameter, shorter head length, pectoral-fin with several small spots forming irregular bands, 2 gill rakers on upper gill arch, usually 17 pectoral-fin rays, and 14 anal-fin rays in B. japonica).
  • Platycephalus cantoi Bleeker,1879の分類学的位置(共著)
    110-  (3)  384  -387  1997  [Not refereed][Not invited]
  • IMAMURA Hisashi, SHINOHARA Gento  Japanese journal of ichthyology  44-  (2)  77  -95  1997  [Not refereed][Not invited]
  • IMAMURA H  44-  (4)  425  -428  1997  [Not refereed][Not invited]
  • コチ科アネサゴチ属の希種Onigicia grandisquamaの再記載(共著)
    44-  (2)  119  -124  1997  [Not refereed][Not invited]
  • 西部インド洋から得られたアカゴチ科魚類の一新種Bembras adenensis(共著)
    44-  (1)  9  -14  1997  [Not refereed][Not invited]
  • Hisashi Imamura, Gento Shinohara  Japanese Journal of Ichthyology  44-  (2)  77  -95  1997  [Not refereed][Not invited]
  • H Imamura, K Amaoka  ICHTHYOLOGICAL RESEARCH  43-  (1)  97  -100  1996/02  [Not refereed][Not invited]
  • H Imamura, M Yabe, M Iguchi, K Amaoka  ICHTHYOLOGICAL RESEARCH  43-  (1)  47  -53  1996/02  [Not refereed][Not invited]
     
    Juvenile development of Suggrundus meerdervoortii was described, based on twelve specimens (12.9-43.8 mm SL) collected from off Yamagata Prefecture, Japan Sea. Two exterior openings in the lateral line scales were completed at ca. 35 mm SL, with the interopercular flap and iris lappet being visible at ca. 44 mm SL, these al being useful taxonomic characters. In juveniles and additional young and adult specimens (ca. 70-191 mm SL), the proportions of head length, snout length, orbital diameter, caudal peduncle depth and caudal fin length decreased with growth; interorbital width decreased rapidly until ca. 70 mm SL, but more or less stabilised thereafter (70-191 mm SL).
  • コチ科魚類及び近縁群の系統分類学的研究
    1-  (2)  123  -233  1996  [Not refereed][Not invited]
  • ハナミノカサゴの稚魚期における形態形成(共著)
    北海道大学水産学部研究彙報  4-  (2/3)  41  -46  1996  [Not refereed][Not invited]
  • Rogadius serratusはR.polijiodonの古参シノニム(共著)
    43-  (1)  97  -100  1996  [Not refereed][Not invited]
  • メゴチの稚魚期における形態形成(共著)
    43-  (1)  47  -53  1996  [Not refereed][Not invited]
  • Species Diversity  1-  (2)  123  -233  1996  [Not refereed][Not invited]
  • Larval development of a red firefish, Pterois volitans, from northwestern Australia(Pisces : Scorpaeniformes
    Bulletin of th Faculty of Fisheires, Hokkaido University  4-  (2/3)  41  -46  1996  [Not refereed][Not invited]
  • H Imamura, H Ida, JT Moyer  JAPANESE JOURNAL OF ICHTHYOLOGY  42-  (3-4)  277  -283  1995/11  [Not refereed][Not invited]
     
    A platycephalid species, Thysanophrys otaitensis is redescribed on the basis of specimens collected from Papua New Guinea and Japan. The name is available satisfying current nomenclatural requirements, and corresponds to a species of Thysanophrys with papillae on lip margins. T. otaitensis is distinguished from Platycephalus fuscus in having fewer lateral line scales, gill rakers, and dorsal and anal fin rays. T. otaitensis is confirmed as a senior synonym of P. malayanus, P. variolosus and T. papillolabium. It differs from other species of the genus in having weakly developed sensory tubes from the suborbital bones and preopercle, as well as a small head with a wide interorbit and papillae on the lips, but absent from the eye.
  • 日本魚類学雑誌  42-  (3/4)  277  -283  1995  [Not refereed][Not invited]
  • H IMAMURA, K AMAOKA  JAPANESE JOURNAL OF ICHTHYOLOGY  41-  (2)  173  -179  1994/08  [Not refereed][Not invited]
     
    A new platycephalid, Grammoplites knappi, is described from specimens from the South China Sea (off Sarawak, Borneo Island, the Gulf of Thailand and Hainan Island, China). The species is distinguished from other species of Grammoplites by the following combination of characters: 5 or fewer gill rakers on the lower arch, narrow interorbit, large eye diameter, short uppermost preopercular spine, no papillae on lips, small body scales and pored lateral line scales with posteriorly-positioned ctenii and a single exterior opening on the posterior margin. A key to the five species of Grammoplites is presented.
  • 今村 央, 尼岡 邦夫  日本魚類学雑誌  41-  (2)  173  -179  1994  [Not refereed][Not invited]
  • K AMAOKA, H IMAMURA  COPEIA  1990-  (4)  1011  -1019  1990/12  [Not refereed][Not invited]
     
    Two new bothid species (Engyprosopon hensleyi and Arnoglossus sayaensis), and another (Parabothus malhensis) previously known only from a male holotype, are described from material recently collected from the western Indian Ocean (Saya de Malha Bank). Engyprosopon hensleyi differs from all known cogeners in having a more slender body, larger number of gill rakers, dark pectoral fins in males and a pair of dark spots on the caudal fin. Arnoglossus sayaensis is distinguished from other known species by a combination of meristic and morphometric characters as well as a unique caudal-fin color pattern that consists of a dark band and six dark spots. Parabothus malhensis is redescribed on the basis of female as well as male specimens. Generic placement is confirmed and sexual dimorphism (interorbital width) is noted for this species for the first time.
  • インド洋サヤ・デ・マルハ・バンクで採集されたダルマガレイ科魚類の2新種と1稀種(共著)
    アメリカ魚類及び爬虫類学会誌  1990-  (4)  1011  -1019  1990  [Not refereed][Not invited]

Research Grants & Projects

  • オーストラリア産コチ科魚類の種多様性の解明
    日本学術振興会：
    Date (from‐to) : 2016/04 -2019/03 
    Author : 今村 央
  • 分子系統仮説の分類体系への還元
    日本学術振興会：
    Date (from‐to) : 2013/04 -2016/03 
    Author : 今村 央
  • オーストラリア海域に生息するコチ科マゴチ属の分類学的再検討
    財団法人藤原ナチュラルヒストリー振興財団：
    Date (from‐to) : 2009/04 -2010/03 
    Author : 今村 央
  • Japan Society for the Promotion of Science：Grants-in-Aid for Scientific Research
    Date (from‐to) : 2006 -2008 
    Author : SHINOHARA Gento, IMAMURA Hisashi
     
    魚類の中で最も多様に種分化したのは鰭に棘をもつグループであるが、棘の役割については十分に調べられてはこなかった。本研究では、国内外の研究機関から多くの標本を集め、解剖やエックス線撮影から臀鰭の棘の形状を調べ、一部の種でこれまで考慮されたことのないセンサーの役割の可能性があることを示した。異なった魚種間で鰭の構成要素の並び方や数を簡単に比較できる方法を開発し、分類や進化の研究を推進する基礎を作った。
  • Japan Society for the Promotion of Science：Grants-in-Aid for Scientific Research
    Date (from‐to) : 2004 -2006 
    Author : MUNEHARA Hiroyuki, YABE Mamoru, IMAMURA Hisashi, HAYAKAWA Youichi
     
    In hexagramids, one boreal species (Hexagrammos octogrammus) and two temperate species (H.otakii and H.agrammus) are distributed in the coast of Japan, and crossbreeding among the three species is known to occur. This study was conducted to clarify what ecological factors involve in the crossbreeding. 1.The preference of spawning substratum differed among the three species. In natural habitats, H.otakii occurred deeper than the other two species which preferred to seaweed. On the other hand, the three species established concurrently their breeding territory in the artificial area. 2.H.octogrammus females were observed in the spawning area of H.otakii on breaker zone, and hybrids were often observed near the artificial fish reefs. It was possible to discriminate visually the eggs of H.otakii from the other two species because of difference of egg-coloration. Several egg masses of H.octogrammus or H.agrammus were often deposited in the H.otakii terrirories. 3.Polymorphism of mtDNA enables to discriminate what species deposited the egg masses in the territory of H.otakii. 40% of the egg masses deposited in H.otakii territories was crossbreeding, and mother of all of them was H.octogrammus. 1.9% of the egg masses in H.agrammus territories were deposited by H.octogrammus. No eggs of H.otakii were observed in the other species territory. This uni-direction hybridization showed that gene introgression from H.octogrammus into H.otakii is proceeding through crossbreeding. 4.80 individuals of hybrid and backcross were collected during this study. Sex of all the fishes was female. To clarify this sexual bias FISH method and survival experiments of embryos were conducted. FISH method denied a possible of gynogenesis of hybrid, and there was no significant difference the survival rates of between purebred embryos and crossbred ones. These results suggested that genetic males exist at least just after hatching.
  • Phylogeny and Taxonomy of the Suborder Trachinoidei
  • Phylogeny and Taxonomy of the Family Platycephalidae.

Educational Activities

Teaching Experience

  • Inter-Graduate School Classes(Educational Program):Museology
    開講年度 : 2021
    課程区分 : 修士課程
    開講学部 : 大学院共通科目
    キーワード : 学術標本・資料、博物館、学芸員、アドバンストコース
  • Ichthyology
    開講年度 : 2021
    課程区分 : 学士課程
    開講学部 : 水産学部
    キーワード : 魚類、形態学、系統分類学、種多様性
  • Environment and People
    開講年度 : 2021
    課程区分 : 学士課程
    開講学部 : 全学教育
    キーワード : サケ、回遊、人工ふ化放流、分類、気候変化、資源変動、生活史、個体群密度効果、生物多様性、バイオロギング、母川回帰、嗅覚、物質循環、海水適応、ゲノム、性統御、始原生殖細胞、流通、食品，機能性素材、アスタキサンチン，考古学、先住民族、市民運動
  • Environment and People
    開講年度 : 2021
    課程区分 : 学士課程
    開講学部 : 全学教育
    キーワード : 海洋物理，海洋化学、海洋生態系，気候変化，プランクトン，ベントス，カレイ，サケ、深海魚、イカ・タコ類，鯨類，海鳥類，海獣類，衛星海洋学，人間活動，地球温暖化，海洋動物の保全・保護

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