Nakaya Mitsuhiro(Faculty of Fisheries Sciences　Marine Bioresource and Environmental Science　Marine Bioresource Science)

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Nakaya Mitsuhiro

Faculty of Fisheries Sciences　Marine Bioresource and Environmental Science　Marine Bioresource Science Associate Professor

Researcher basic information

■ Degree

水産科学博士, 北海道大学

■ URL
researchmap URL

https://researchmap.jp/mitsuhironakaya?lang=en

ホームページURL

https://jglobal.jst.go.jp/detail?JGLOBAL_ID=201201054204422091

■ Various IDs
J-Global ID

201201054204422091

■ Research Keywords and Fields
Research Keyword

feeding habits

growth and survival

Early life history

Fisheries bio-resources

Research Field

Life Science, Aquatic bioproduction science, Fisheries bio-resources

■ Educational Organization

Bachelor's degree program, School of Fisheries Sciences

Master's degree program, Graduate School of Fisheries Sciences

Doctoral (PhD) degree program, Graduate School of Fisheries Sciences

Career

■ Career
Career

May 2018 - Present
Hokkaido University, Faculty of Fisheries Sciences, 准教授

Sep. 2012 - Apr. 2018
Hokkaido University, School of Fisheries Sciences, 特任助教

Nov. 2010 - Aug. 2012
Fisheries Research Agency, 研究職員

Mar. 2009 - Oct. 2010
カキキン有限会社, 生産・販売・研究職員

Oct. 2006 - Jan. 2009
Japan International Cooperation Agency, 青年海外協力隊フィリピン国養殖隊員

Apr. 2006 - Sep. 2006
カキキン有限会社, 生産・販売・研究職員

Apr. 2004 - Mar. 2006
Fisheries Research Agency, 技術開発補佐職員

Educational Background

Apr. 2001 - Mar. 2004, 北海道大学大学院, 水産科学研究科, 環境生物資源学科博士後期課程

Apr. 1999 - Mar. 2001, 北海道大学大学院, 水産科学研究科, 漁業学科博士前期課程

Apr. 1995 - Mar. 1999, Hokkaido University, School of Fisheries Sciences

Research activity information

■ Awards

Mar. 2014, The Japanese Society of Fisheries and Technology, The Japanese Society of Fisheries and Technology Encouragement Prize in 2013
The acquisition of the biological information to contribute the population dynamics model of Pacific saury by captive experiment
Mitsuhiro Nakaya

Mar. 2011, The Japanese Society of Fisheries Science, Research article award of the Japanese Society of Fisheries Science in 2011
Growth and maturation of Pacific saury Cololabis saira under laboratory conditions.
M. Nakaya;T. Morioka;K. Fukunaga;N. Murakami;T. Ichikawa;S. Sekiya;S. Suyama

■ Papers

Annual and Spatial Variation in the Diet of Juvenile Pacific Cod in Mutsu Bay, Japan
Anran Dong; Tetsuya Takatsu; Tomoya Ishikawa; Kenta Sasaki; Mitsuhiro Nakaya
Fishes, 11, 5, 302, 302, MDPI AG, 19 May 2026
Scientific journal, To evaluate Mutsu Bay as a nursery habitat for Pacific cod (Gadus macrocephalus Tilesius, 1810), we analyzed settled age-0 juveniles collected with a small bottom otter trawl over 10 years. The three stations with the highest juvenile densities were targeted, and prey-specific feeding intensity (SCIi), its sum (SCI), and the relative condition factor (Kn) were quantified, followed by examining their relationships with juvenile attributes and environmental variables. Diets varied among stations and shifted ontogenetically from small-sized calanoid copepods to larger planktonic and benthic prey. SCI was highest at stations where juveniles consumed medium-sized plankton (0.1–1.0 mg ind−1), including Calanus pacificus, Mesocalanus tenuicornis, Metridia pacifica, Anomura zoeae, and Euphausiacea furciliae, and lower where other prey dominated. High-SCI individuals were rarely observed, likely reflecting enhanced digestion at high temperatures near the upper habitat limit (~12 °C) and consistently low prey density independent of temperature. Kn increased with body size and SCI and tended to be higher in cooler water and closer to the bay mouth, suggesting coupled environmental and physiological constraints. These results suggest that after late May, juveniles may benefit from moving toward the bay mouth, where prey encounter rates are likely higher, including relatively larger prey, which may improve feeding opportunities and condition.

Technical note: Development of an extraction protocol and colorimetric analysis for alginate in marine sediment
Sota Nakazato; Takashi Kawahara; Reiji Ichii; Shingo Akita; Akira Inoue; Masaki Fujita; Hideyuki Kurihara; Mitsuhiro Nakaya; Atsushi Ooki
Biogeosciences, 23, 8, 2747, 2759, Copernicus GmbH, 21 Apr. 2026
Scientific journal, Abstract. In this study, we developed a novel extraction method for alginate, a major organic component derived from brown algae, in marine sediments and evaluated its applicability for quantitative analysis. Alginate analytical methods have been established in food chemistry: we modified these techniques to apply them to marine sediments, which are characterized by the cation composition (e.g., Ca, Mg, Fe) and humic substance-like high-molecular-weight organic compounds. By modifying the protocol through the addition of EDTA-2Na and the omission of ethanol precipitation, we improved the extraction efficiency of alginate from marine sediments, as demonstrated by spike recovery tests where recoveries of Na+-Alg significantly increased from 38.7 % with the conventional method to 64.7 %–82.6 %. Enzymatic degradation tests using alginate lyase confirmed that a portion of the extracted uronic acids from marine sediments (at least 34 %) was derived from alginate, verifying its presence in the natural samples. Using this modified method, alginate contents in sediment samples from coastal waters around Hokkaido, Japan, were quantified as 6.11–26.0 mg m−2 in Funka Bay, 39.0–41.3 mg m−2 in Hakodate Bay, 11.8–14.7 mg m−2 off Cape Esan, and 58.3–74.1 mg m−2 off Muroran. However, these values may be overestimated due to the presence of other uronic acids; therefore, they should be interpreted with caution rather than being directly equated with absolute alginate content.

Microstructure of otoliths in larval and juvenile Shishamo smelt Spirinchus lanceolatus, a cold-water fish species
Aquatic Animals, 2026, 1, 12, 22 Feb. 2026, [Peer-reviewed], [Corresponding author]
English, Scientific journal

New insights into the feeding behaviour of the Japanese squid Todarodes pacificus paralarvae, and a combined analysis of metagenome and amino acid isotope ratios.
Kohsuke Adachi; Yoshito Chikaraishi; Sinpei Nomura; Naoko Goto-Inoue; Nobuhiro Zaima; Yuki Kuriya; Michihiro Araki; Katsuji Morioka; Takashi Yanagimoto; Mitsuhiro Nakaya; Jun Yamamoto
PloS one, 21, 3, e0340579, 2026, [International Magazine]
English, Scientific journal, The Japanese flying squid Todarodes pacificus (Ommastrephidae) is a commercially and ecologically important species; however, there remains much room for investigation in its early life phase, especially its diet in wild environments. After excising the digestive gland (cecum sac) of wild paralarvae of T. pacificus using Laser Microdissection (LMD), the dietary species were estimated via metagenomic analysis. The 16S rRNA analysis predominantly detected Burkholderiales and Xanthomonadales, regardless of mantle length (ML) of T. pacificus and capture area. COI (Cytochrome c oxidase subunit I) analysis detected in various organisms including Discosea, Arthropoda, Nemertea, Porifera, golden algae, and fungi (Ascomycota and Basidiomycota), which were found irregularly. About half of the paralarval cecum sacs were found empty during the histological analysis. We also estimated the trophic position (TP) of wild paralarvae in the same sea region via stable isotope analysis of amino acids. The TP estimated was 3.0 for all larval groups regardless of ML, suggesting that the trophic tendency of paralarvae is carnivorous, likely feeding on herbivorous organisms. Taken together, our results suggest that the paralarvae feed mostly on various kinds of living herbivorous organisms and partly on detritus.

Egg mass gelatinous envelopes of yellow goosefish Lophius litulon protect the internal eggs and larvae from salinity stress and desiccation
Tomoya Ishikawa; Mitsuhiro Nakaya; Yuta Eno; Tetsuya Takatsu
Scientific Reports, 16, 1, Springer Science and Business Media LLC, 12 Dec. 2025, [Peer-reviewed]
English, Scientific journal

Size at settlement completion of yellow goosefish Lophius litulon
Tomoya Ishikawa; Mitsuhiro Nakaya; Yuta Eno; Tetsuya Takatsu; Soichiro Maki; Hisashi Hirano; Daisuke Sato; Kyosei Noro
Aquatic Animals, Sep. 2025, [Peer-reviewed]
English, Scientific journal

Macroscopic and microscopic morphological characteristics of gelatinous egg masses (egg veils) of yellow goosefish Lophius litulon (Lophiiformes; Lophiidae)
Tomoya Ishikawa; Mitsuhiro Nakaya; Yuta Eno; Tetsuya Takatsu
J Fish Biol, Jul. 2024, [Peer-reviewed]
English, Scientific journal

Spawning ground selection and larval feeding habits of Arabesque greenling Pleurogrammus azonus around the Matsumae Peninsula, Japan
Tetsuya Takatsu; Tomoaki Toyonaga; Shin’ya Hirao; Eri Ooka; Naoto Kobayashi; Mitsuhiro Nakaya
Fisheries Science, 90, 3, 435, 452, Springer Science and Business Media LLC, 03 Apr. 2024
Scientific journal

Genetic evidence for multiple mating and mixing of sperm from multiple males in the seminal receptacles of female Japanese flying squid (Todarodes pacificus)
Ryusei Ohtani; Jun Yamamoto; Takashi Yanagimoto; Kohsuke Adachi; John R Bower; Hidefumi A Fujioka; Miyuki Hirose; Mitsuhiro Nakaya; Satoshi Suzuki; Shun Tokioka
Journal of Molluscan Studies, 88, 3, Oxford University Press (OUP), 19 Sep. 2022, [Peer-reviewed]
English, Scientific journal, ABSTRACT

The genetic diversity of sperm and spermatangia stored by mated Japanese flying squid (Todarodes pacificus) was examined to better understand how this ommastrephid squid mates and stores sperm. Analyses were conducted using spermatangia implanted in the lips of immature squid collected in Tsugaru Strait, northern Japan, in July–August 2019, spermatangia implanted in the lips of mature squid collected in the East China Sea in April 2019, and sperm stored in the seminal receptacles of squid collected off Tosashimizu, Kochi Prefecture, Japan, in February 2019. DNA was extracted, microsatellite loci were amplified using five PCR primers, and allele peaks were analysed. Analysis of the spermatangia confirmed that females in the field mate with multiple males, suggesting that males transfer from 1 to at least 14 spermatangia in each mating. Analysis of the seminal receptacles showed that sperm from multiple males are mixed within individual sperm chambers. Spermatangia were also found implanted in the lips of males, providing evidence of same-sex sexual behaviour. To date, studies of cephalopod mating systems have focused on coastal species, and the results of this study add to our growing knowledge of more oceanic species.

Negative temperature dependence of statolith Sr/Ca and its intraspecific variability in experimentally maintained spear squid Heterololigo bleekeri
Shota Hosono; Takahiro Irie; Jun Yamamoto; Mitsuhiro Nakaya; Yasunori Sakurai; Tomohiko Kawamura; Yoko Iwata
Journal of the Marine Biological Association of the United Kingdom, 1, 7, 19 Aug. 2022, [Peer-reviewed]
English, Scientific journal

Effect of egg size on the growth rate and survival of wild walleye pollock Gadus chalcogrammus larvae
Keitaro Kajiwara; Mitsuhiro Nakaya; Kota Suzuki; Yota Kano; Tetsuya Takatsu
Fisheries Oceanography, 31, 3, 238, 254, Wiley, May 2022
Scientific journal

Changes in morphology and specific gravity in larvae of Lophius litulon (Lophiiformes; Lophiidae) before and after emergence from egg veil
Tomoya Ishikawa; Mitsuhiro Nakaya; Weifeng Gao; Tetsuya Takatsu; Kenji Odani; Ryo Suzuki; Kyosei Noro; Yuhei Takeya
Environmental Biology of Fishes, 105, 2, 303, 312, Springer Science and Business Media LLC, Feb. 2022
Scientific journal

Embryonic development and effect of water temperature on hatching of Lophius litulon
Tomoya Ishikawa; Mitsuhiro Nakaya; Tetsuya Takatsu
Environmental Biology of Fishes, 105, 1, 77, 86, Springer Science and Business Media LLC, Jan. 2022
Scientific journal

Effects of water temperature on the embryonic period of Pacific rainbow smelt Osmerus dentex.
T. Nam; M. Nakaya; T. Ishikawa; T. Takatsu
Aquaculture Science, 69, 3, 223, 225, Oct. 2021, [Peer-reviewed], [Corresponding author]
English, Scientific journal

Age and growth of Pacific rainbow smelt Osmerus dentex estimated from scales and otoliths in Funka Bay and the Yamazaki River, Japan.
T. Nam; M. Nakaya; T. Takatsu
Aquaculture Science, 69, 2, 153, 161, Jul. 2021, [Peer-reviewed]
English, Scientific journal

Validation of otolith daily increment formation and growth analysis of yellow goosefish Lophius litulon.
W. Gao; M. Nakaya; T. Ishikawa; T. Takatsu; Y. Takeya; R. Suzuki; K. Noro
Fisheries Science, 87, 4, 541, 548, Springer Science and Business Media LLC, Jun. 2021, [Peer-reviewed], [Corresponding author]
English, Scientific journal

Note on color variations of inner surface of pectoral fins in Lepidotrigla microptera Günther, 1873 (Actinopterygii: Triglidae) from Mutsu Bay, Japan.
N. Kawakami; T. Kawai; M. Nakaya
The Thailand National History Museum Journal, 15, 1, 51, 58, Jun. 2021, [Peer-reviewed]
English, Scientific journal

Feeding habits of larval yellow goosefish Lophius litulon around the Shimokita Peninsula and in Funka Bay, Japan
Weifeng Gao; Mitsuhiro Nakaya; Tetsuya Takatsu; Yuhei Takeya; Kyosei Noro
Aquaculture Science, 68, 3, 275, 277, Sep. 2020, [Peer-reviewed], [Corresponding author]
English, Scientific journal

津軽海峡周辺におけるキアンコウの初期生態
高偉峰; 中屋光裕; 髙津哲也; 竹谷裕平; 鈴木亮; 野呂恭成
水産海洋研究, 84, 3, 228, 229, Aug. 2020, [Invited]
Japanese, Symposium

ホッケの父母性効果について
森田晶子; 横田高士; 中屋光裕; 横山貴洋
水産海洋研究, 84, 3, 225, 225, Aug. 2020, [Invited]
Japanese, Symposium

ホッケ生活史初期の成長
河村眞美; 中屋光裕; 髙津哲也; 巣山哲; 鈴木祐太郎; 高畠信一
水産海洋研究, 84, 3, 223, 224, Aug. 2020, [Invited]
Japanese, Symposium

Close-up observations on the spawning behavior of a captive Japanese flying squid (Todarodes pacificus)
J. Yamamoto; K. Adachi; J. Bower; H. Matsui; M. Nakaya; R. Ohtani; P. Puneeta; S. Suzuki; S. Tokioka; D. Vijai; T. Yanagimoto; H. Yoo
Scientific Reports, 2019, [Peer-reviewed]
English, Scientific journal

Comparison of age and growth of the marbled flounder Pseudopleuronectes yokohamae (Günther, 1877) in the coastal waters of Japan.
P. Hong; S. Katayama; M. Yamamoto; M. Ishii; T. Baba; M. Saeki; M. Suzuki; M. Nakaya
Asian Fisheries Science, 32, 2, 72, 80, 2019, [Peer-reviewed]
English, Scientific journal

Annual and seasonal changes in the assemblage of planktonic copepods and appendicularians in Funka Bay before and after intrusion of Coastal Oyashio Water.
H. Yamaoka; T. Takatsu; K. Suzuki; N. Kobayashi; A. Ooki; M. Nakaya
Fisheries Science, 85, 6, 1077, 1087, 2019, [Peer-reviewed]
English, Scientific journal

Growth of the brittle star Ophiura sarsii sarsii in Funka Bay, Hokkaido, Japan.
K. Orino; K. Ishigane; K. Suzuki; J. Izumiura; M. Nakaya; T. Takatsu
Fisheries Science, 85, 4, 705, 716, 2019, [Peer-reviewed]
English, Scientific journal

A DNA marker to discriminate two types of freshwater shrimp Palaemon paucidens and the distribution of these two types in Japan
CHOW SEINEN; NIGORIKAWA NAOKO; URAGAKI NAOKO; KAWAMURA AKIKO; ICHIKAWA TATSUYA; USHIODA KENTARO; HIGUCHI MASAHITO; TEGA TARO; KODAMA KOJI; ITOH MASAHIRO; ICHIMURA MASAKI; IMAI TADASHI; MATSUZAKI KOJI; HIRASAWA KEI; TOKURA KEITA; NAKAHATA KATSUMI; KODAMA SAKIE; HAKOYAMA HIROSHI; YADA TAKASHI; NIWA KENTARO; NAGAI SATOSHI; YANAGIMOTO TAKASHI; IKEDA MINORU; SAITO KAZUYOSHI; NAKAYA MITSUHIRO; MARUYAMA TOMOAKI; MAKI SOICHIRO; OONUKI TAKAKIYO; MUTO FUMITO; NOHARA KENJI; FURUSAWA CHIHARU; SHICHIRI HIROSHI
NIPPON SUISAN GAKKAISHI, 84, 4, 674, 681, The Japanese Society of Fisheries Science, 2019, [Peer-reviewed]
Japanese, Scientific journal,
Among the palaemonid shrimp species of the genus Palaemon known from Japan, Palaemon paucidens is the only species inhabiting freshwater areas. Two genetically distinct types (designated by A and B) were found by allozyme electrophoresis analysis three decades ago. We developed a simple multiplex-PCR assay to discriminate the two types based on 18S rDNA sequences. A total of 422 individuals collected at 152 localities in Japan were analyzed by the multiplex-PCR assay. No heterozygote was observed, indicating that these two types have been reproductively isolated. Both types were distributed throughout Japan; type A was observed in ponds, lakes and rivers, while type B was observed only in rivers.

ミトコンドリアDNAによって検討した噴火湾に生息するアカガレイ個体群の遺伝的多様性．
山本祐樹; 池田実; 中屋光裕; 鈴木孝太; 髙津哲也
魚類学会誌, 65, 1, 75, 80, Apr. 2018, [Peer-reviewed]
Japanese, Scientific journal

Sexual dimorphism in the size of bulbous nasal tubes of yellow goosefish Lophius litulon oŠ Aomori Prefecture, northern Japan
Yuhei Takeya; Tetsuya Takatsu; Tomoyuki Yamanaka; Yasutoki Shibata; Mitsuhiro Nakaya
Nippon Suisan Gakkaishi (Japanese Edition), 84, 1, 130, 132, Nihon Suisan Gakkai, 2018, [Peer-reviewed]
Japanese, Scientific journal

Otolith microstructure of Arabesque greenling Pleurograrnmus azonus: A species with a long embryonic period
Savitri Marannu; Mitsuhiro Nakaya; Tetsuya Takatsu; Shin-ichi Takabatake; Mikimasa Joh; Yutaro Suzuki
FISHERIES RESEARCH, 194, 129, 134, Oct. 2017, [Peer-reviewed]
English, Scientific journal

The effect of temperature on the early development and starvation tolerance of yellow goosefish Lophius litulon.
M. Nakaya; Y. Takeya; K. Noro; R. Suzuki; W. Gao; T. Takatsu
Aquaculture Science, 65, 3, 251, 254, 日本水産増殖学会, Sep. 2017, [Peer-reviewed]
English, Scientific journal

Relationship between temperature and embryonic period of Arabesque greenling Pleurogrammus azonus.
M. Nakaya; S. Marannu; Y. Inagaki; K. Kajiwara; Y. Sato; K. Suzuki; T. Takatsu
Aquaculture Science, 65, 3, 247, 250, 日本水産増殖学会, Sep. 2017, [Peer-reviewed]
English, Scientific journal

Changes in the specific gravity of eggs, larvae, and juveniles of Hippoglosoides dubius, and the relationship between egg development and water temperature
Kota Suzuki; Mitsuhiro Nakaya; Hae-Kyun Yoo; Taihei Matsuda; Tetsuya Takatsu
NIPPON SUISAN GAKKAISHI, 83, 4, 580, 588, Jul. 2017, [Peer-reviewed]
Japanese, Scientific journal

Use of the illicium for age determination and verification of yellow goose fish Lophius litulon off Aomori Prefecture, northern Japan
Yuhei Takeya; Tetsuya Takatsu; Tomoyuki Yamanaka; Yasutoki Shibata; Mitsuhiro Nakaya
NIPPON SUISAN GAKKAISHI, 83, 1, 9, 17, 2017, [Peer-reviewed]
Japanese, Scientific journal

Determination of the spawning history of Pacific saury Cololabis saira from rearing experiments: identification of post-spawning fish from histological observations of ovarian arterioles
Satoshi Suyama; Akio Shimizu; Sayoko Isu; Hitomi Ozawa; Taizo Morioka; Mitsuhiro Nakaya; Toru Nakagawa; Naoto Murakami; Takashi Ichikawa; Yasuhiro Ueno
FISHERIES SCIENCE, 82, 3, 445, 457, May 2016, [Peer-reviewed]
English, Scientific journal

Effects of n-3 highly unsaturated fatty acid content in Artemia on survival and development of laboratory-reared horsehair crab Erimacrus isenbeckii larvae
Tadao Jinbo; Shigeki Dan; Mitsuhiro Nakaya; Masakazu Ashidate; Katsuyuki Hamasaki
FISHERIES SCIENCE, 79, 3, 459, 467, May 2013, [Peer-reviewed]
English, Scientific journal

Interannual growth differences and growth-selective survival in larvae and juveniles of marbled sole Pseudopleuronectes yokohamae
Mikimasa Joh; Mitsuhiro Nakaya; Naoto Yoshida; Tetsuya Takatsu
MARINE ECOLOGY PROGRESS SERIES, 494, 267, 279, 2013, [Peer-reviewed]
English, Scientific journal

Differences in body proportions between hatchery-reared- and wild pacific herring, Clupea pallasii (Actinopterygii: Clupeiformes: Clupeidae)
Mitsuhiro Nakaya; Kyohei Fukunaga; Shigenori Suzuki
Acta Ichthyologica et Piscatoria, 43, 1, 75, 77, 2013, [Peer-reviewed]
English, Scientific journal

Feeding habits of juvenile slime flounder Microstomus achne in the coastal area of southern Hokkaido
Mitsuhiro Nakaya; Takuzo Abe
ICHTHYOLOGICAL RESEARCH, 58, 4, 377, 381, Nov. 2011, [Peer-reviewed]
English, Scientific journal

Verification of growth dependent survival in early life history of Pacific saury Cololabis saira using laboratory experiment
Mitsuhiro Nakaya; Taizo Morioka; Kyohei Fukunaga; Naoto Murakami; Takashi Ichikawa; Sachio Sekiya; Satoshi Suyama; Yasuhiro Ueno; Akio Shimizu
ENVIRONMENTAL BIOLOGY OF FISHES, 92, 1, 113, 123, Sep. 2011, [Peer-reviewed]
English, Scientific journal

平成22年度日本水産学会論文賞受賞 Growth and maturation of Pacific saury Cololabis saira under laboratory conditions.
中屋光裕
日本水産学会誌, 77, 571, 2011, [Invited]
Japanese, Research society

Growth and maturation of Pacific saury Cololabis saira under laboratory conditions
Mitsuhiro Nakaya; Taizo Morioka; Kyouhei Fukunaga; Naoto Murakami; Takashi Ichikawa; Sachio Sekiya; Satoshi Suyama
FISHERIES SCIENCE, 76, 1, 45, 53, Jan. 2010, [Peer-reviewed]
English, Scientific journal

Effectiveness of using a vinyl sheet to reduce mortality caused by collision during rearing of Pacific saury Cololabis saira
M Nakaya; T Morioka; K Fukunaga; N Murakami; T Ichikawa; S Sekiya
Aquaculture Science, 58, 2, 301, 303, 水産増殖談話会, 2010, [Peer-reviewed]
English, Scientific journal, 魚類、サンマ科、飼育、死亡率、資材、利用。

Relationships Between Survival Period and Temperature of Newly Hatched Pacific saury Cololabis saira under Starvation Conditions
NAKAYA Mitsuhiro; MORIOKA Taizo; FUKUNAGA Kyohei; MURAKAMI Naoto; ICHIKAWA Takashi; SEKIYA Sachio; SUYAMA Satoshi
Aquaculture Science, 57, 4, 625, 626, 水産増殖談話会, 20 Dec. 2009
English, 魚類、サンマ化、稚仔、給餌、生存、水温。

Comparison of the nutritional transition date distributions of marbled sole larvae and juveniles in Hakodate Bay, Hokkaido
Mikimasa Joh; Tetsuya Takatsu; Mitsuhiro Nakaya; Naoto Yoshida; Masayasu Nakagami
FISHERIES SCIENCE, 75, 3, 619, 628, May 2009, [Peer-reviewed]
English, Scientific journal

Validation of otolith daily increments for larval and juvenile Japanese halfbeak Hyporhamphus sajori
Mitsuhiro Nakaya; Taizo Morioka; Yohei Fukunaga; Sachio Sekiya; Tadao Jinbo; Hiroshi Nagashima; Yasuhiro Ueno
FISHERIES RESEARCH, 93, 1-2, 186, 189, Sep. 2008, [Peer-reviewed]
English, Scientific journal

Maternal effects and larval survival of marbled sole Pseudopleuronectes yokohamae
Tomomi Higashitani; Tetsuya Takatsu; Mitsuhiro Nakaya; Mikimasa Joh; Toyomi Takahashi
JOURNAL OF SEA RESEARCH, 58, 1, 78, 89, Jul. 2007, [Peer-reviewed]
English, Scientific journal

Annual variation of potential predation impacts on larval and juvenile marbled sole Pseudopleuronectes yokohamae by sand shrimp Crangon uritai in Hakodate Bay, Hokkaido
Mitsuhiro Nakaya; Tetsuya Takatsu; Mikimasa Joh; Masayasu Nakagami; Toyomi Takahashi
FISHERIES SCIENCE, 73, 1, 112, 122, Feb. 2007, [Peer-reviewed]
English, Scientific journal

サンマの成熟過程の解明:飼育実験の果たす役割
巣山哲; 森岡泰三; 中屋光裕; 中神正康; 上野康弘
水産総合研究センター研究報告, 173, 180, 31 Mar. 2006
Japanese

Otolith microstructure and daily increment validation of marbled sole (Pseudopleuronectes yokohamae)
M Joh; T Takatsu; M Nakaya; T Higashitani; T Takahashi
MARINE BIOLOGY, 147, 1, 59, 69, May 2005, [Peer-reviewed]
English, Scientific journal

Catch efficiencies of Hirota's sledge net for crangonid shrimp and juvenile marbled sole
N Yoshida; T Takatsu; M Nakaya; M Joh; O Kimura; S Shimizu
NIPPON SUISAN GAKKAISHI, 71, 2, 172, 177, Mar. 2005
Japanese, Scientific journal

Spatial distribution and feeding habits of the shrimp Crangon uritai as a predator on larval and juvenile marbled sole Pleuronectes yokohamae
M Nakaya; T Takatsu; M Nakagami; M Joh; T Takahashi
FISHERIES SCIENCE, 70, 3, 445, 455, Jun. 2004, [Peer-reviewed]
English, Scientific journal

Prey choice order of Crangon uritai as a predator for juvenile marbled sole Pleuronectes yokohamae.
Mitsuhiro Nakaya; Tetsuya Takatsu; Masayasu Nakagami; Mikimasa Joh; Toyomi Takahashi
Suisanzoshoku, 52, 2, 121, 128, 日本水産増殖学会 = Japan Aquaculture Society, 2004, [Peer-reviewed]
English, Scientific journal, During the spring in the coastal waters of Hakodate Bay the shrimp Crangon uritai is the predominant predator on larval and juvenile marbled sole, Pleuronectes yokohamae. To investigate the prey preferences of C. uritai, P. yokohamae and two other prey species, a mysid Nipponomysis sp. and a gammarid Haustorioides japonicus, were used for predation experiments. Among the three prey organisms studied, Nipponomysis sp. was preyed on first, followed by P. yokohamae, and finally H. japonicus. Prey profitability did not differ between P. yokohamae and Nipponomysis sp., though H. japonicus was less profitable. Nipponomysis sp. was larger, more perceptible, and slower to escape than P. yokohamae. A relatively high abundance of mysid Nipponomysis sp. could restrict and reduce predation on P. yokohamae by C. uritai. Gammarid H japonicus was able to escape relatively more easily, because its harder and slippery skin required more handling time than the other prey, possibly making it an undesirable food source for C. uritai. High perceptibility and low escape ability may be the most important factors affecting prey choice of C. uritai.餌種の特性の違いとエビジャコの餌選択の関係を知るために，捕食実験を行った。実験はエビジャコ5個体に対して，マコガレイ稚魚とその他エビジャコの主要な餌であるアミ類の1種Nipponomysis sp.とヨコエビ類の1種ナミノリソコエビを，それぞれ10個体ずつ同時に与えて行った。捕食結果，マコガレイ稚魚はエビジャコにとって処理に時間を要しない餌であるが，底面から離れることがほとんどないため発見されにくく，逃避能力も高いため，Nipponomysis sp.よりも捕食されにくい餌であった。ナミノリソコエビはマコガレイ稚魚に比べて小型であるが，捕獲してから処理に時間を要するため，最も捕食されにくい餌であった。このことからマコガレイ稚魚よりも相対的に目立ちやすく，逃避能力が低く，かつ処理に時間を要しない餌（アミ類）の存在は，エビジャコによるマコガレイ稚魚の被食頻度を低下させていると考えられた。

Body-length shrinkage of marbled sole Pseudopleuronectes yokohamae larvae preserved in formalin and in ethanol solutions.
Mikimasa Joh; Tetsuya Takatsu; Mitsuhiro Nakaya; Kazuo Imura; Tomomi Higashitani
Suisanzoshoku, 51, 2, 227, 228, Japanese Society for Aquaculture Science, 2003, [Peer-reviewed]
English, Scientific journal, To estimate the live body length of marbled sole larvae from a preserved specimen, the notochord-length (NL) shrinkage due to preservation was investigated. In 5% formalin solution, significant shrinkage was observed in all NL classes after 30 days and 1.5 years preservation (5.2% and 6.3% in the 2.8-5.0 mm class; 3.3% and 3.8% in the 5.1-7.0 mm class; 3.8% and 4.1% in the 7.0-7.7 mm class, respectively) . In 90% ethanol solution, significant shrinkage was observed only in the 2.8-5.0 mm NL class after both durations (4.9% and 6.3%, respectively) . In both preservatives, the influence of preservation on shrinkage was stronger for small larvae than for large ones.

Spatial and temporal distribution of larval and juvenile marbled sole Pleuronectes yokohamae in Hakodate Bay.
M Nakagami; T Takatsu; M Nakaya; T Takahashi
水産海洋研究, 65, 3, 85, 93, 2001, [Peer-reviewed]
Japanese, Scientific journal

■ Other Activities and Achievements

キアンコウ仔魚の卵帯からのふ出に関する研究
石川智也; 中屋光裕; 高偉峰; 高津哲也; 小谷健二; 鈴木亮; 野呂恭成; 竹谷裕平, 日本水産学会大会講演要旨集(CD-ROM), 2021, 2021

陸奥湾のマダラ着底稚魚期までの累積生残率の推定
高津哲也; 野呂恭成; 菊谷尚久; 吉田達; 伊藤欣吾; 三浦太智; 松谷紀明; 董安然; 中屋光裕, 日本水産学会大会講演要旨集(CD-ROM), 2021, 2021

陸奥湾における1989-2019年マダラ着底稚魚分布密度調査による加入量予測
高津哲也; 中屋光裕; 神山晃汰; 亀井佳彦; 小林直人; 飯田高大; 野呂恭成, 水産海洋研究, 84, 3, 2020

スジエビ2タイプの判別と分布
張成年; 矢田崇; 児玉紗希江; 箱山洋; 丹羽健太郎; 長井敏; 柳本卓; 今井正; 池田実; 槇宗市郎; 大貫貴清; 武藤文人; 野原健司; 古澤千春; 七里浩志; 渾川直子; 浦垣直子; 川村顕子; 市川竜也; 潮田健太郎; 樋口正仁; 手賀太郎; 児玉晃治; 伊藤雅浩; 市村政樹; 松崎浩二; 平澤桂; 戸倉渓太; 中畑勝見; 斎藤和敬; 中屋光裕; 丸山智朗, 日本水産学会大会講演要旨集, 2018, 131, 26 Mar. 2018
Japanese

スケトウダラ仔魚の孵化輪紋を用いた母親効果仮説の検証
梶原慧太郎; 鈴木孝太; 鹿野陽太; 中屋光裕; 高津哲也, 日本水産学会大会講演要旨集, 2017, 2017

スケトウダラの卵サイズ選択的生残
梶原慧太郎; 鈴木孝太; 鹿野陽太; 中屋光裕; 高津哲也, 日本水産学会北海道支部大会講演要旨集, 2016, 2016

道南津軽暖流域で採集されたヒレグロ浮遊仔魚
鈴木孝太; 中村広和; 中屋光裕; 折野和樹; 梶原慧太郎; 佐藤義崇; 高津哲也, 水産海洋学会研究発表大会講演要旨集, 2015, 2015

噴火湾におけるアカガレイ卵径の季節・年変動
田村純一; 鈴木孝太; 中屋光裕; 梶原慧太郎; 佐藤義崇; 折野和樹; 高津哲也, 水産海洋学会研究発表大会講演要旨集, 2015, 2015

海洋水産資源開発事業報告書遠洋かつお釣(太平洋中・西部海域)平成24年度
木村拓人; 江藤宗義; 佐谷守朗; 大島達樹; 伏島一平; 清藤秀理; 岡本浩明; 南浩史; 松永宏昌; 藤井徹生; 島康洋; 高橋誠; 山田徹生; 米田道夫; 河野悌昌; 町口裕二; 濱田和久; 中屋光裕; 三輪理; 釜石隆; 明田定満; 長谷川勝男; 溝口弘泰; 山越康行; 小田健一, 海洋水産資源開発事業報告書平成24年度遠洋かつお釣(太平洋中・西部海域), 241P, 2014
Japanese

平成24年度海洋水産資源開発事業報告(遠洋かつお釣)(速報)―太平洋中・西部海域:第三十一日光丸
木村拓人; 江藤宗義; 佐谷守朗; 大島達樹; 伏島一平; 清藤秀理; 岡本浩明; 南浩史; 松永浩昌; 藤井徹生; 島康洋; 高橋誠; 山田徹生; 米田道夫; 河野悌昌; 濱田和久; 中屋光裕; 三輪理; 釜石隆; 明田定満; 長谷川勝男; 溝口弘泰; 山越康行; 小田健一, 海洋水産資源開発ニュース, 418, 26P, Jul. 2013
Japanese

海洋水産資源開発事業報告書遠洋かつお釣(太平洋中・西部海域)平成23年度
木村拓人; 江藤宗義; 佐々木安之; 佐谷守朗; 大島達樹; 伏島一平; 清藤秀理; 魚崎浩司; 南浩史; 小倉未基; 浜田和久; 島康洋; 高橋誠; 山田徹生; 河野悌昌; 中屋光裕; 橋本博; 松田圭史; 釜石隆; 長谷川勝男; 溝口弘泰; 小田健一, 海洋水産資源開発事業報告書平成23年度遠洋かつお釣(太平洋中・西部海域), 2013

平成23年度海洋水産資源開発事業(遠洋かつお釣)報告(速報)―太平洋中・西部海域:第三十一日光丸―
木村拓人; 江藤宗義; 佐々木安之; 大島達樹; 伏島一平; 清藤秀理; 魚崎浩司; 南浩史; 小倉未基; 米田道夫; 島康洋; 高橋誠; 山田徹生; 河野悌昌; 中屋光裕; 橋本博; 松田圭史; 釜石隆; 長谷川勝男; 溝口弘泰; 小田健一, 海洋水産資源開発ニュース, 408, 24P, Jun. 2012
Japanese

北海道南部太洋平沿岸におけるババガレイ稚魚の食性と成長
中屋光裕; 阿部拓三, 日本水産学会大会講演要旨集, 2010, 75, 26 Mar. 2010
Japanese

摂餌開始時期の遅れがサンマの成長・生残に及ぼす影響
中屋光裕; 森岡泰三; 安藤忠; 村上直人; 市川卓; 白藤徳夫; 巣山哲; 上野康弘, 日本水産学会北海道支部大会講演要旨集, 2009, 52, 2009
Japanese

飼育下におけるサンマの産卵数の経時変化
森岡泰三; 中屋光裕; 巣山哲; 清水昭男; 関谷幸生, 日本水産学会大会講演要旨集, 2007, 79, 28 Mar. 2007
Japanese

飼育サンマにおける生殖腺及び生殖関連形質の変化
清水昭男; 吉田勝俊; 宇田川美穂; 巣山哲; 森岡泰三; 関谷幸夫; 松原孝博; 澤口小有美; 中屋光裕; 原彰彦, 日本水産学会大会講演要旨集, 2007, 54, 28 Mar. 2007
Japanese

サンマの成熟過程の解明:飼育実験の果たす役割 (特別号:独立行政法人水産総合研究センターワークショップ水産重要魚種の生殖機構と水温による影響プロシーディング) -- (第6章:親魚飼育の具体例と将来構想)
巣山哲; 森岡泰三; 中屋光裕, 水産総合研究センター研究報告, 0, 0, 173, 180, Mar. 2006
Fisheries Research Agency, Japanese

Prey Choice Order of Crangon uritai as a Predator for Juvenile Pleuronectes yokohamae
NAKAYA Mitsuhiro; TAKATSU Tetsuya; NAKAGAMI Masayasu; JOH Mikimasa; TAKAHASHI Toyomi, Aquaculture Science, 52, 2, 121, 128, 20 Jun. 2004
餌種の特性の違いとエビジャコの餌選択の関係を知るために、捕食実験を行った。実験はエビジャコ5個体に対して、マコガレイ稚魚とその他エビジャコの主要な餌であるアミ類の1種Nipponomysis sp. とヨコエビ類の1種ナミノリソコエビを、それぞれ10個体ずつ同時に与えて行った。捕食結果、マコガレイ稚魚はエビジャコにとって処理に時間を要しない餌であるが、底面から離れることがほとんどないため発見されにくく、逃避能力も高いため、Nipponomysis sp.よりも捕食されにくい餌であった。ナミノリソコエビはマコガレイ稚魚に比べて小型であるが、捕獲してから処理に時間を要するため、最も捕食されにくい餌であった。このことからマコガレイ稚魚よりも相対的に目立ちやすく、逃避能力が低く、かつ処理に時間を要しない餌（アミ類）の存在は、エビジャコによるマコガレイ稚魚の被食頻度を低下させていると考えられた。, 水産増殖談話会, English

函館湾におけるマコガレイ仔魚の日周鉛直分布
関口督人; 中屋光裕; 城幹昌; 高津哲也, 日本水産学会大会講演要旨集, 2004, 41, 31 Mar. 2004
Japanese

マコガレイ仔稚魚の成長履歴解析
城幹昌; 高津哲也; 中屋光裕; 高橋豊美, 日本水産学会大会講演要旨集, 2004, 56, 31 Mar. 2004
Japanese

函館湾におけるマコガレイ仔稚魚の捕食者としてのエビジャコCrangon uritai の時空間分布と摂餌生態
中屋光裕, 博士論文, 北海道大学, 2004

サヨリ仔稚魚の耳石日周輪形成
中屋光裕; 森岡泰三; 錦昭夫; 福永恭平; 鈴木重則; 神保忠雄; 永島宏; 上野康弘, 日本水産学会北海道支部大会講演要旨集, 2004, 43, 2004
Japanese

フォルマリンとエタノール固定によるマコガレイ仔魚の体長収縮
城幹昌; 高津哲也; 中屋光裕; ほか2名, 水産増殖, 51, 2, 227, 228, Jun. 2003
ホルムアルデヒド、エタノール、カレイ類、保存、体長、収縮。, 水産増殖談話会, Japanese

■ Books and other publications

道南おさかな図鑑
魚に魅せられた北大の研究者たち
海文堂出版, Oct. 2023, 9784303800116, 97p, Japanese

水産科学・海洋環境科学実習
中屋光裕; 髙津哲也, 魚類・ベントス測定
海文堂, 2019, [Contributor]

練習船による水産科学・海洋環境科学実習
中屋光裕; 髙津哲也, 魚類・ベントス測定
五稜出版社, 2016, [Contributor]

■ Lectures, oral presentations, etc.

津軽海峡周辺におけるキアンコウの初期生態
高偉峰; 中屋光裕; 高津哲也; 竹谷裕平; 鈴木亮; 野呂恭成
第49回北洋研究シンポジウムー亜寒帯域における魚類の初期生活史研究と加入量予測の現状, 13 Sep. 2019, Japanese, Invited oral presentation
[Invited], [Domestic Conference]

ホッケ生活史初期の成長
河村眞美; 中屋光裕; 高津哲也; 巣山哲; 鈴木祐太郎; 高畠信一
第49回北洋研究シンポジウムー亜寒帯域における魚類の初期生活史研究と加入量予測の現状, 13 Sep. 2019, Japanese, Invited oral presentation
[Invited], [Domestic Conference]

■ Syllabus

資源生物学特論Ⅱ, 2024年, 修士課程, 水産科学院

資源生物学特論Ⅰ, 2024年, 修士課程, 水産科学院

海洋生物科学実験Ⅱ, 2024年, 学士課程, 水産学部

基礎乗船実習, 2024年, 学士課程, 水産学部

一般教育演習(ﾌﾚｯｼｭﾏﾝｾﾐﾅｰ), 2024年, 学士課程, 全学教育

水産科学英語Ⅰ, 2024年, 学士課程, 水産学部

乗船実習, 2024年, 学士課程, 水産学部

水産科学英語Ⅱ, 2024年, 学士課程, 水産学部

水産資源各論, 2024年, 学士課程, 水産学部

海洋保全学, 2024年, 学士課程, 水産学部

教科教育法（水産Ⅰ）, 2024年, 学士課程, 教育学部

■ Affiliated academic society

JAPANESE SOCIETY OF FISHERIES OCEANOGRAPHY

JAPAN AQUACULTURE SOCIETY

THE JAPANESE SOCIETY OF FISHERIES SCIENCE

■ Research Themes

親イカ由来の細菌と溶存態有機物（DOM）に着目したスルメイカ初期餌料の解明
科学研究費助成事業
01 Apr. 2023 - 31 Mar. 2026
山本潤; 足立亨介; 柳本卓; 中屋光裕
日本学術振興会, 基盤研究(B), 北海道大学, 23K26975

水中カメラを用いた産卵場調査に基づくホッケ資源動向予測
令和7年度研究助成事業（一般研究）
Apr. 2025 - Mar. 2026
中屋光裕
公益財団法人北水協会, 一般研究, 北海道大学大学院水産科学研究院, Principal investigator

Detection of maternal effects using field-collected Pacific cod larvae and juveniles and its application to resource management
Grants-in-Aid for Scientific Research
01 Apr. 2021 - 31 Mar. 2024
高津哲也; 中屋光裕
本研究の目的は，産業重要種であるマダラGadus macrocephalusの野外採集仔魚から「母親効果」を検出し，母親効果を考慮した漁獲への変更が，資源量回復にどの程度貢献するのか解明することである。また，環境変動が資源量変動におよぼす影響も同時解析することで，母親効果を利用した資源保護策の有効性も明らかにする．
まず，これまでのマダラの親魚量と着底期までの仔稚魚の生残率の関係を明らかにするために，主要産卵場の一つである青森県陸奥湾の1989年から2019年までの両者の豊度の間で累積的生残率を推定し，その年変動を明らかにした．その結果，累積的生残率は仔魚期の前半にあたる2月下旬から3月中旬の水温が高いほど高く，仔魚期の後半と稚魚期にあたる3月下旬から5月下旬の水温が7.6℃で最大値を示すことを明らかにした。水温はそれぞれ全変動の23%と22%を説明した。
次に，孵化仔魚の耳石輪紋に形成される孵化チェック（通常より太い日周輪）の大きさが，卵径に比例するか明らかにするために，2022年1月に津軽海峡で採集した成熟魚を用いて人工授精・飼育を行い，孵化直前の卵と孵化直後の仔魚を得た。また成熟魚の体長や年齢，栄養状態が卵径におよぼす影響を明らかにするために，耳石による年齢査定と魚体測定を行った。
野外採集仔魚は2021年4月と2022年2月に，主要産卵場である青森県陸奥湾でプランクトンネットによる採集を行った。同時に物理環境データと，仔魚の餌生物であるかいあし類ノープリウスの採集を行った。
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (C), Hokkaido University, 21K05723

Study on the first food of Todarodes pacificus paralarvae focus on bacterial transmission between and mother-to-paralarvae
Grants-in-Aid for Scientific Research
01 Apr. 2020 - 31 Mar. 2023
山本潤; 足立亨介; 柳本卓; 中屋光裕
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), Hokkaido University, 20H03055

Effects of egg size, larval growth rate, and juvenile nutritional condition on population dynamics of walleye pollock
Grants-in-Aid for Scientific Research
01 Apr. 2016 - 31 Mar. 2019
TAKATSU Tetsuya; NAKAYA Mitsuhiro
To clarify survival processes in Japan Pacific Stock (JPS) of walleye pollock Gadus chalcogrammus, maternal effect and somatic condition were investigated in Funka Bay in 2016-2018. No annual difference in hatch-check diameter on larval otolith derived from maternal was observed between three year-classes. Notochord lengths in late February and early March were small in low water temperature years. The 75-77% of settled juveniles collected in mid-June have settlement checks around their otoliths and settled fork-lengths were estimated at 67.2-69.0 mm from the relationship between fork length and otolith diameter. Feeding intensities and somatic conditions of juveniles decreased in Tsugaru Warm Current water from August to October, then those recovered with water temperature decreasing after October. Annual fluctuations of somatic condition and growth rate might influence the recruitment of JPS.
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (C), Hokkaido University, 16K07834

Study on use of microbial loop by Japanese flying squid paralarvae
Grants-in-Aid for Scientific Research
01 Apr. 2016 - 31 Mar. 2019
YAMAMOTO Jun; SAKURAI Yasunori
The present study examined the first food of Todarodes pacificus paralarvae by assuming that the paralarvae consume microorganisms which were produced by biological loop. The bacterial profile of the egg masses which were obtained through natural spawning in a large experimental tank was similar to those of the nidamental gland (the secretary organ of adult). This result suggested that the adhering bacteria might have originated from indigenous or symbiotic bacteria of the nidamental gland. While， metagenome analysis (CI1 and 16S-rRNA) on the gut contents which were extract from wild paralarvae by Laser Micro-dissection showed that the gut contents were consist of many species of eukaryote and prokaryote (the results on eukaryotic results may require additional testing). The result suggested paralarvae intake microorganism called “detritus”.
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), Hokkaido University, 16H04963