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Fukuyama Ibuki

Field Science Center for Northern Biosphere　Forest Research Station　Wakayama Experimental ForestSpecially Appointed Assistant Professor

Researcher basic information

■ Degree
  • Doctor of Human and Environmental Studies, Kyoto University, Mar. 2024
■ URL
researchmap URLホームページURL■ Various IDs
Researcher number
  • 71003670
ORCID IDJ-Global ID■ Research Keywords and Fields
Research Field
  • Life Science, Ecology and environment
  • Life Science, Biodiversity and systematics

Career

■ Career
Career
  • Apr. 2026 - Present
    Hokkaido University, Field Science Center for Northern Biosphere, JSPS Assistant Professor, Japan
  • Apr. 2024 - Mar. 2026
    Hokkaido University, Field Science Center for Northern Biosphere, 日本学術振興会 特別研究員PD, Japan
  • Apr. 2021 - Mar. 2024
    Kyoto University, Graduate School of Human and Environmental Studies, 日本学術振興会特別研究員DC1, Japan
Educational Background
  • Apr. 2019 - Mar. 2024, Kyoto University, Graduate School of Human and Environmental Studies, Japan
  • Apr. 2015 - Mar. 2019, Kyoto University, Faculty of Agriculture, Faculty of Agriculture, Japan

Research activity information

■ Papers
  • Molecular identity and natural history notes of Boreus jezoensis (Mecoptera: Boreidae) in the Japanese archipelago
    Ibuki Fukuyama; Takuya K. Hosoki; Atsushi Takaki; Kota Kitagawa; Moe N. Hosoki; Hironori Mieda; Masayuki Fukuda; Satoshi Hayakawa; Tomoya Suzuki
    Entomological Science, Jun. 2026
    Scientific journal
  • Reevaluation of the genetic identification accuracy using SSR markers of giant salamander hybrids by SNP analysis
    Ibuki Fukuyama; Natsuhiko Yoshikawa; Koshiro Eto; Masafumi Matsui; Atsushi Tominaga; Kazumi Fukutani; Kohei Matsubara; Sotaro Hara; Kanto Nishikawa
    Limnology, Springer Science and Business Media LLC, 08 May 2026
    Scientific journal
  • Estimation of Japanese giant salamander populations in the Kamo River
    Takakura Koh-Ichi; Tsuchida Karin; Matsui Masafumi; Tominaga Atsushi; Yoshikawa Natsuhiko; Eto Koshiro; Fukutani Kazumi; Fukuyama Ibuki; Yamamoto Kazuhiro; Matsubara Kohei; Onuma Hirokazu; Hara Sotaro; Nishikawa Kanto
    Japanese Journal of Conservation Ecology, 30, 2, 139, 148, The Ecological Society of Japan, 30 Nov. 2025
    Japanese, Hybridisation between exotic species and closely related native species has become a problem in various taxa, and management of the resulting hybrids is urgently needed. However, by the time their existence has been confirmed, hybrids have often already increased in number and spread over wide areas, such that assessing their current status is a top priority. This study estimated temporal changes in giant salamander populations in the Kamo River in Kyoto, Japan to obtain basic knowledge necessary for the management of non-native species and hybrids. The native Japanese giant salamander (Andrias japonicus) is threatened by environmental degradation, habitat fragmentation, and population decline and loss of genetic uniqueness due to hybridisation with the non-native Chinese giant salamander (Andrias davidianus). Hybridisation is ongoing in the Kamo River, which was surveyed 134 times between 2005 and 2021. This study constructed a Bayesian state-space model based on these survey data to estimate the populations of Japanese individuals, non-native individuals, first-generation hybrids, and unknown hybrids. The results indicated that unknown hybrids currently constitute the main population in the Kamo River, while the numbers of native and pure non-native individuals are quite limited. At the beginning of the survey period, the population of first-generation hybrids was the largest, but unknown hybrids subsequently dominated, suggesting that most individuals deemed unknown hybrids were second-generation or later hybrids. The detection rate of individuals per survey was less than 0.1%, indicating that the current survey method is ineffective for population control. Furthermore, the survival rates of native, non-native, and first-generation hybrid individuals declined during the survey period, suggesting that they are aging. These results indicate that the management of non-native and hybrid giant salamanders requires limiting target areas and adopting more efficient control methods.
  • Ancient DNA integrates fossil and modern giant salamander taxonomy
    Masahiro Noda; Takushi Kishida; Hiroyuki Kitagawa; Ibuki Fukuyama; Kanto Nishikawa
    Scientific Reports, 09 Jun. 2025
    Scientific journal
  • Population Genetics Provides Insights Into the Impact of Future Climate Change on the Genetic Structure and Distribution of Asian Warty Newts (Genus Paramesotriton)
    Dung Van Tran; Tomoya Suzuki; Ibuki Fukuyama; Ricardo J. Vera; Kanto Nishikawa
    Ecology and Evolution, 15, 4, Wiley, 03 Apr. 2025
    Scientific journal, ABSTRACT

    Assessing population vulnerability to climate change is essential for informing management and conservation strategies, particularly for amphibians. We integrated population genetics and ecological niche modeling (ENM) to assess the effect of climate change on the distribution and genetic structure of two species of Asian warty newts (Paramesotriton deloustali and P. guangxiensis) in northern Vietnam. We analyzed population genetics using a genome‐wide SNP dataset generated with the MIG‐seq method. Additionally, we applied ensemble ecological niche modeling (ENM) to predict the potential distribution of warty newts under two climate change scenarios (SSP2‐4.5 and SSP5‐8.5) for the periods 2050 and 2090. Population genetics revealed three primary groups: West, East + Cao Bang (CB), and Quang Ninh (QN). CB exhibited discordance between mitochondrial DNA and single‐nucleotide nuclear DNA polymorphism data. Furthermore, gene flow within populations was restricted, particularly within West and QN. Spatial distribution analyses of genetic clusters conditioned by environmental variables predicted that the East + CB genetic cluster would expand, whereas those of West and QN would decrease. The introgression of genetic structures probably reduces the vulnerability of East + CB to climate change. ENM analysis revealed that these newts are susceptible to climate change, resulting in a reduction in their suitable habitat areas across all scenarios. We also observed a shift in the suitable distribution toward higher elevations. Our results suggest that the mountainous areas of northern Vietnam could serve as potential refugia for these newts as the effects of climate change intensify.
  • Banded or striped? Significant colour dimorphism of a bridal snake in Borneo
    Ibuki Fukuyama; Mohamad Yazid Hossman; Yusuke Fuke; Melvin Gumal; Kanto Nishikawa
    Zoologica Scripta, Mar. 2025
    Scientific journal
  • Deep learning-based detector of invasive alien frogs, Polypedates leucomystax and Rhinella marina, on an island at invasion front
    Kaede Kimura; Ibuki Fukuyama; Kinji Fukuyama
    Biological Invasions, Mar. 2025
    Scientific journal
  • First record of amphibian prey of the Oriental Odd-Tooth Snake, Lycodon orientalis (Hilgendorf, 1880), in Japan
    Gumma Kubo; Ibuki Fukuyama
    Herpetology Notes, 17, 603, 605, 06 Oct. 2024
  • Foraging predicts the evolution of warning coloration and mimicry in snakes.
    Yosuke Kojima; Ryosuke K Ito; Ibuki Fukuyama; Yusaku Ohkubo; Andrew M Durso
    Proceedings of the National Academy of Sciences of the United States of America, 121, 11, e2318857121, 12 Mar. 2024, [International Magazine]
    English, Scientific journal, Warning coloration and Batesian mimicry are classic examples of Darwinian evolution, but empirical evolutionary patterns are often paradoxical. We test whether foraging costs predict the evolution of striking coloration by integrating genetic and ecological data for aposematic and mimetic snakes (Elapidae and Dipsadidae). Our phylogenetic comparison on a total of 432 species demonstrated that dramatic changes in coloration were well predicted by foraging strategy. Multiple tests consistently indicated that warning coloration and conspicuous mimicry were more likely to evolve in species where foraging costs of conspicuous appearance were relaxed by poor vision of their prey, concealed habitat, or nocturnal activity. Reversion to crypsis was also well predicted by ecology for elapids but not for dipsadids. In contrast to a theoretical prediction and general trends, snakes' conspicuous coloration was correlated with secretive ecology, suggesting that a selection regime underlies evolutionary patterns. We also found evidence that mimicry of inconspicuous models (pitvipers) may have evolved in association with foraging demand for crypsis. These findings demonstrate that foraging is an important factor necessary to understand the evolution, persistence, and diversity of warning coloration and mimicry of snakes, highlighting the significance of additional selective factors in solving the warning coloration paradox.
  • Discovery of ex situ individuals of Andrias sligoi, an extremely endangered species and one of the largest amphibians worldwide.
    Kanto Nishikawa; Masafumi Matsui; Natsuhiko Yoshikawa; Atsushi Tominaga; Koshiro Eto; Ibuki Fukuyama; Kazumi Fukutani; Kohei Matsubara; Yasunari Hattori; Shohei Iwato; Tsukasa Sato; Zenkichi Shimizu; Hirokazu Onuma; Sotaro Hara
    Scientific reports, 14, 1, 2575, 2575, 31 Jan. 2024, [International Magazine]
    English, Scientific journal
  • Phylogenetic placement and diet of homalopsid snake Miralia alternans (Ruess, 1833).
    Ibuki Fukuyama; Tomonori Kodama; Koshiro Eto; Masafumi Matsui; Mohamad Yazid Hossman; Kanto Nishikawa
    Zoological research, 43, 5, 734, 737, 18 Sep. 2022, [International Magazine]
    English
  • Rediscovery of Luperosaurus sorok Das, Lakim, and Kandaung, 2008 (Squamata, Gekkonidae) With Notes on Its Taxonomy and Natural History
    Ibuki Fukuyama; Mohamad Yazid Hossman; Kanto Nishikawa
    Journal of Herpetology, 56, 2, 241, 248, 01 Jun. 2022
    Scientific journal
  • Discovery of a deeply divergent and highly endemic frog lineage from Borneo: A taxonomic revision of Kalophrynus nubicola Dring, 1983 with descriptions of two new species (Amphibia: Anura: Microhylidae)
    Ibuki Fukuyama; Masafumi Matsui; Koshiro Eto; Mohamad Yazid Hossman; Kanto Nishikawa
    Zoologischer Anzeiger, 293, 326, 343, Jul. 2021
    Scientific journal
  • New herpetofaunal records from Gunung Mulu National Park and its surrounding areas in Borneo
    Ryobu Fukuyama; Ibuki Fukuyama; Takaki Kurita; Yosuke Kojima; Mohamad Yazid Hossman; Akihiro Noda; Kanto Nishikawa
    Herpetozoa, 34, 89, 96, 01 Apr. 2021
    Scientific journal
  • A new Occidozyga from Sarawak, Malaysian Borneo (Anura: Dicroglossidae).
    Masafumi Matsui; Kanto Nishikawa; Koshiro Eto; Amir Hamidy; Yazid Hossman; Ibuki Fukuyama
    Zootaxa, 4926, 4, zootaxa.4926.4.4, 10 Feb. 2021, [International Magazine]
    English, Scientific journal, We found a uniquely colored dicroglossid frog of the genus Occidozyga from western Sarawak, East Malaysia. It is divergent from other congeners in morphology and mtDNA sequences. In a molecular phylogeny, this species is the sister lineage to the continental species O. lima and O. martensii with weak support. The species is small with SVL 16-18 mm in males and 18-19 mm in females, without dorsolateral fold but with transverse wrinkles on dorsum, tips of fingers lacking disks but of toes with disks, only first and second toes webbed to disks, and orange-brown dorsum with dark brown band. We thus describe it as a new species.
  • Systematics of Calliophis intestinalis with the Resurrection of Calliophis nigrotaeniatus (Elapidae, Serpentes).
    Ibuki Fukuyama; Gernot Vogel; Masafumi Matsui; Koshiro Eto; Misbahul Munir; Mohamad Yazid Hossman; Amir Hamidy; Kanto Nishikawa
    Zoological science, 37, 6, 586, 594, Dec. 2020, [Domestic magazines]
    English, Scientific journal, The red-bellied form of Calliophis intestinalis (Laurenti, 1768) sensu lato was originally reported from Pahang, west Malaysia. To determine the taxonomic status of this form, we examined the type specimens of Elaps sumatranus Lidth De Jeude, 1890, Calliophis intestinalis everetti (Boulenger, 1896), and Callophis furcatus var. nigrotaeniatus Peters, 1863. The results indicated that the red-bellied form of C. intestinalis should be named as Calliophis nigrotaeniatus comb. nov., whose valid species status was based on morphological and molecular analyses. We designate a lectotype and redescribe the species, which is genetically close to Calliophis bilineatus (Peters, 1881) from the Philippines, and is clearly distinguishable from other congeners by possessing a pair of gray or dark blue lateral stripes and by being bright red on the ventrum. Elaps sumatranus and C. i. everetti are relegated to subjective junior synonyms of C. nigrotaeniatus.
  • Mandibular sawing in a snail-eating snake.
    Yosuke Kojima; Ibuki Fukuyama; Takaki Kurita; Mohamad Yazid Bin Hossman; Kanto Nishikawa
    Scientific reports, 10, 1, 12670, 12670, 29 Jul. 2020, [International Magazine]
    English, Scientific journal, The jaws of vertebrates display a striking diversity in form and function, but they typically open and close like a trapdoor rather than sliding like a saw. Here, we report unique feeding behaviour in the blunt-headed snail-eating snake, Aplopeltura boa (family Pareidae), where the snake cuts off and circumvents the indigestible part (the operculum) of its prey in the mouth using long sliding excursions of one side of the mandible, while the upper jaws and the mandible on the other side maintain a stable grasp on the prey. This behaviour, which we call 'mandibular sawing', is made possible by extraordinarily independent movements of the jaw elements and is a surprising departure from usual feeding behaviour in vertebrates.
  • Second specimen of the rare bornean snake Xenophidion acanthognathus (Xenophidiidae, serpentes, reptilia) and confirmation as a distinct species from X. schaeferi
    Ibuki Fukuyama; Mohamad Yazid Hossman; Kanto Nishikawa
    Raffles Bulletin of Zoology, 68, 214, 219, 2020
    Scientific journal
  • First record of calliophis maculiceps (Günther, 1858) in khammouane province, laos (serpentes, elapidae)
    Ibuki Fukuyama; Masatoshi Hibino; Kanto Nishikawa; Daosavanh Sanamxay
    Herpetology Notes, 13, 175, 177, 2020
    Scientific journal
  • A new species of the genus Larutia (Squamata: Scincidae) from Gunung Penrissen, Sarawak, Borneo.
    Ibuki Fukuyama; Tsutomu Hikida; Mohamad Yazid Hossman; Kanto Nishikawa
    Zootaxa, 4661, 3, zootaxa.4661.3.6, 29 Aug. 2019, [International Magazine]
    English, Scientific journal, We collected a specimen of a scincid lizard of Larutia Böhme, 1981 from the edge of a primary forest on Gunung Penrissen, Kuching Division, Sarawak, Malaysian Borneo. The single specimen of the new species differs from all other known congeners by the molecular divergence in the mitochondrial ND1 gene and morphological characters including small adult body size (SVL 84 mm); 22 longitudinal scale rows around midbody; first pair of chinshields contacting second infralabial; second pair of chinshields separated from infralabials by an elongated scale; two subdigital lamellae on second toe; and body without yellow or pale bands or spots. It is the ninth species described in the genus and the second species of Larutia in Borneo.
■ Other Activities and Achievements
■ Books and other publications
■ Affiliated academic society
  • 2022 - Present
    日本生態学会
  • 2018 - Present
    日本動物分類学会
  • 2015 - Present
    日本爬虫両棲類学会
■ Research Themes
  • ヤエヤマタカチホヘビの絶滅リスク評価に向けた生態・遺伝情報の統合的解明
    公益信託タカラ・ハーモニストファンド
    Jul. 2026 - Jul. 2027
    宝ホールディングス, Principal investigator
  • サンショウウオ属における表現型可塑性の獲得と喪失機構の解明
    科学研究費助成事業
    01 Apr. 2024 - 31 Mar. 2027
    福山 伊吹
    日本学術振興会, 特別研究員奨励費, 北海道大学, 24KJ0005
  • 東南アジア熱帯域における半地中性両生類の種多様性形成メカニズムの解明
    科学研究費助成事業
    Mar. 2021 - Mar. 2024
    福山 伊吹
    本研究は東南アジアに広く分布するチョボグチガエル属の種多様化・共存機構を明らかにすることで、熱帯域における両生類の種多様性形成メカニズムの解明を目的とする。まず、1)ボルネオ島で共存する本属の3系統について、体サイズと鳴き声の各形質の変異に着目し、系統間の繁殖的形質置換の有無を検証する。次に、2)属全体の系統推定を行い、上記の形質の祖先形質復元により、いつどのように共存に重要な形質を獲得し多様化したのかを明らかにし、3)主要な系統について、現在および過去の各系統の生息適地、個体群の拡大縮小の変遷、分散の経路や順序 、分岐年代を推定することで、現在の分布パターン形成に至った経緯を明らかにする。
    本年度は上記の(1)および(2)に取り組んだ。(1)について、新型コロナウイルスの影響で解析を行うのに十分な音声データが得られなかったため、すでに手元にある標本を用いて体サイズの種間比較のみを行った。(2)について、ミトゲノム決定と系統解析、分岐年代推定、体サイズの祖先形質復元を行った。これらの結果から、チョボグチガエル属は中新世に大きく多様化し、各地に分散したこと、複数種が同所的に生息するボルネオ島では中型の祖先からの大型化、小型化が平行的に生じていることが明らかになった。これらの結果を現在投稿論文として準備中である。
    日本学術振興会, 特別研究員奨励費, 京都大学, 22KJ1711
  • ボルネオ島におけるカエル類の垂直分布調査と種多様性創出機構の解明
    公益信託四方記念地球環境保全研究助成金
    Jul. 2018 - Jul. 2020
    一般財団法人自然環境研究センター, Principal investigator
■ Academic and Social Contribution Activities/Other
Industrial Property Rights
  • Ecology and Evolution
    Peer review
    Peer review etc
  • Zookeys
    Peer review
    Peer review etc
  • Treubia
    Peer review
    Peer review etc
  • Taprobanica
    Peer review
    Peer review etc
  • Zootaxa
    Peer review
    Peer review etc
  • Journal of Biogeography
    Peer review
    Peer review etc
  • Herpetology Notes
    Peer review
    Peer review etc
  • Current Herpetology
    Peer review
    Peer review etc
  • Biological Journal of Linnean Society
    Peer review
    Peer review etc
  • Biodiversitas Journal of Biological Diversity
    Peer review
    Peer review etc
  • Akamata
    Peer review
    Peer review etc