Updated on 2024/05/22

写真a

 
HOSO, Masaki
 
Affiliation
Faculty of Education and Integrated Arts and Sciences, School of Education
Job title
Associate Professor
Degree
博士 ( 2008.03 京都大学 )
Profile
生態/進化/行動/左右性

Research Experience

  • 2021.04
    -
    Now

    Waseda University   College of Art and Design General Education

  • 2020.04
    -
    2021.03

    Musashino Art University   College of Art and Design General Education

  • 2018.04
    -
    2020.03

    The University of Tokyo   Graduate School of Science

  • 2013.04
    -
    2018.03

    Kyoto University

  • 2011.04
    -
    2013.03

    Naturalis Biodiversity Center

  • 2008.04
    -
    2011.03

    Tohoku University   Graduate School of Life Sciences

  • 2006.04
    -
    2008.03

    Kyoto University   Graduate School of Science

▼display all

Education Background

  • 2005.04
    -
    2008.03

    Kyoto University   Graduate School of Science   Division of Biological Sciences  

  • 2003.04
    -
    2005.03

    Kyoto University   Graduate School of Asian and African Area Studies  

  • 1999.04
    -
    2003.03

    Kyoto University  

Committee Memberships

  • 2022.08
    -
    Now

    日本進化学会  代議員

  • 2021.11
    -
    Now

    日本動物行動学会  運営委員

  • 2014.09
    -
    Now

    日本動物学会  Associate Editor at Zoological Letters

  • 2022.04
    -
    2023.03

    日本生態学会  大会企画委員会 委員長

  • 2022.09
    -
    Now

    日本動物学会  関東支部委員

  • 2014.04
    -
    Now

    文部科学省 科学技術政策研究所 科学技術動向研究センター  専門調査員

  • 2021.04
    -
    2022.09

    日本動物学会  大会実行委員

  • 2021.04
    -
    2022.03

    日本生態学会  大会企画委員会 副委員長

  • 2018.07
    -
    2020.06

    日本進化学会  代議員

  • 2017.04
    -
    2020.03

    文部科学省 科学研究費審査 第三部会第45020小委員会  専門委員

  • 2016.01
    -
    2018.12

    種生物学会  幹事

  • 2016.01
    -
    2018.06

    日本進化学会  評議員

  • 2017.03
    -
    2018.03

    日本生態学会  大会企画委員

  • 2015.01
    -
    2017.12

    日本生態学会  保全生態学研究編集委員

  • 2017.06
    -
    2017.11

    文部科学省  科学研究費審査第三部会専門委員

  • 2016.09
    -
    2017.08

    日本進化学会  第19回大会実行委員

  • 2007.01
    -
    2015.12

    種生物学会  種生物学研究 編集委員

  • 2013.09
    -
    2014.08

    日本進化学会  第16回大会実行委員

  • 2012.01
    -
    2013.12

    日本進化学会  評議員

  • 2010.01
    -
    2012.12

    種生物学会  幹事

▼display all

Research Areas

  • Ecology and environment / Evolutionary biology / Biodiversity and systematics

Awards

  • Wakayama cultural award: Cultural incentive award

    2019.01   Wakayama Pref.  

    Winner: Hoso Masaki

  • 宮地賞

    2015.03   日本生態学会  

    Winner: 細 将貴

  • 成茂動物科学振興賞

    2014.09   日本動物学会  

    Winner: 細 将貴

  • 文部科学大臣表彰 若手科学者賞

    2014.04   文部科学省  

    Winner: 細 将貴

  • 研究奨励賞

    2011.08   日本進化学会  

    Winner: 細 将貴

 

Papers

  • Mechanisms underlying variations in the dentition asymmetry of Asian snail-eating snakes

    Masaki Hoso

    Ecological Research Monographs     261 - 274  2022  [Refereed]  [Invited]

    Authorship:Lead author, Last author, Corresponding author

    DOI

  • Life-History Modeling Reveals the Ecological and Evolutionary Significance of Autotomy

    Masaki Hoso, Ichiro K. Shimatani

    The American Naturalist   196 ( 6 ) 690 - 703  2020.12  [Refereed]

    Authorship:Lead author, Corresponding author

    DOI

    Scopus

    2
    Citation
    (Scopus)
  • Asymmetry of mandibular dentition is associated with dietary specialization in snail-eating snakes

    Masaki Hoso

    PEERJ   5   e3011  2017.03  [Refereed]

    Authorship:Lead author, Last author, Corresponding author

     View Summary

    Background, In vertebrates, the left-and-right pairs of homologous organs are generally present in equal numbers. A remarkable exception is known in the snail eating snakes of the family Pareidae: almost all the pareid snakes have much more teeth on the right mandible than on the left for functional specialization in feeding on the dextral majority of land snails. Because the only exceptional species with symmetric dentition has been regarded as a slug-eater, the extent of dietary specialization on slugs could shape the degree of the lateral asymmetry of mandibular dentition (dentition asymmetry) even among snail eaters.
    Methods. To test this, I compared the morphology and behavior of two sympatric species of Taiwanese snail-eating snakes, Pareas atayal and P, formosensis.
    Results. Specimens collected in the same locality showed that the dentition asymmetry of P. formosensis was significantly smaller than that of P. atayal. Congruent to its weak asymmetry, P, formosensis showed a strong preference of slugs to snails in the feeding experiment.
    Discussion. The dietary specialization of P. formosensis on slugs would contribute to niche partitioning from the sympatric congener P. atayal. This study suggests that the diverse variation in the dentition asymmetry of pareid snakes is the result of their dietary specialization and divergence.

    DOI PubMed

    Scopus

    10
    Citation
    (Scopus)
  • Roles of maternal effects in maintaining genetic variation: Maternal storage effect

    Masato Yamamichi, Masaki Hoso

    Evolution   71 ( 2 ) 449 - 457  2017.02  [Refereed]

    DOI PubMed

    Scopus

    15
    Citation
    (Scopus)
  • Cost of autotomy drives ontogenetic switching of anti-predator mechanisms under developmental constraints in a land snail

    Masaki Hoso

    Proceedings of the Royal Society B: Biological Sciences   279 ( 1748 ) 4811 - 4816  2012.12  [Refereed]

    Authorship:Lead author, Last author, Corresponding author

     View Summary

    Autotomy of body parts offers various prey animals immediate benefits of survival in compensation for considerable costs. I found that a land snail
    <italic>Satsuma caliginosa</italic>
    of populations coexisting with a snail-eating snake
    <italic>Pareas iwasakii</italic>
    survived the snake predation by autotomizing its foot, whereas those out of the snake range rarely survived. Regeneration of a lost foot completed in a few weeks but imposed a delay of shell growth. Imprints of autotomy were found in greater than 10 per cent of
    <italic>S. caliginosa</italic>
    in the snake range but in only less than 1 per cent out of it, simultaneously demonstrating intense predation by the snakes and high efficiency of autotomy for surviving snake predation in the wild. However, in experiments, mature
    <italic>S. caliginosa</italic>
    performed autotomy less frequently. Instead of the costly autotomy, they can use defensive denticles on the inside of their shell apertures. Owing to the constraints from the additive growth of shells, most pulmonate snails can produce these denticles only when they have fully grown up. Thus, this developmental constraint limits the availability of the modified aperture, resulting in ontogenetic switching of the alternative defences. This study illustrates how costs of adaptation operate in the evolution of life-history strategies under developmental constraints

    DOI CiNii

    Scopus

    21
    Citation
    (Scopus)
  • Non-adaptive speciation of snails by left-right reversal is facilitated on oceanic islands

    Masaki Hoso

    Contributions to Zoology   81 ( 2 ) 79 - 85  2012.05  [Refereed]  [Invited]

    Authorship:Lead author, Last author, Corresponding author

     View Summary

    The nearly neutral theory of molecular evolution predicts that small population size is essential for non-adaptive evolution. Evolution of whole-body left-right reversal in snails is generally a compelling example of non-adaptive speciation, because variants with reversed chirality would suffer from reduced mating opportunities within a population. Despite this reproductive disadvantage, sinistral snail species have repeatedly originated from dextral ancestors in terrestrial pulmonates. Here I show that snail speciation by reversal has been accelerated on oceanic islands. Analysing the global biogeography of 995 genera across 84 stylommatophoran families, I found that the proportion of sinistral snail genera was enhanced in genera endemic to oceanic islands. Oceanic islands are relatively small land masses offering highly fragmented habitats for snails. Thus, the upper limit of population size would probably have been small for a long time there. Oceanic islands may have facilitated the fixation of the nonadaptive allele for speciation by reversal, allowing subsequent ecological divergence of sibling species. This study illustrates the potential role of genetic drift in non-adaptive speciation on oceanic islands.

    DOI

    Scopus

    8
    Citation
    (Scopus)
  • A speciation gene for left–right reversal in snails results in anti-predator adaptation

    Masaki Hoso, Yuichi Kameda, Shu-Ping Wu, Takahiro Asami, Makoto Kato, Michio Hori

    Nature Communications   1 ( 1 )  2010.12  [Refereed]

    Authorship:Lead author, Corresponding author

    DOI PubMed

    Scopus

    76
    Citation
    (Scopus)
  • Divergent Shell Shape as an Antipredator Adaptation in Tropical Land Snails

    Masaki Hoso, Michio Hori

    The American Naturalist   172 ( 5 ) 726 - 732  2008.11  [Refereed]

    Authorship:Lead author, Corresponding author

    DOI PubMed J-GLOBAL

    Scopus

    34
    Citation
    (Scopus)
  • Right-handed snakes: convergent evolution of asymmetry for functional specialization

    Masaki Hoso, Takahiro Asami, Michio Hori

    BIOLOGY LETTERS   3 ( 2 ) 169 - U2  2007.04  [Refereed]

    Authorship:Lead author, Corresponding author

     View Summary

    External asymmetry found in diverse animals bears critical functions to fulfil ecological requirements. Some snail-eating arthropods exhibit directional asymmetry in their feeding apparatus for foraging efficiency because dextral (clockwise) species are overwhelmingly predominant in snails. Here, we show convergence of directional asymmetry in the dentition of snail-eating vertebrates. We found that snakes in the subfamily Pareatinae, except for non-snail-eating specialists, have more teeth on the right mandible than the left. In feeding experiments, a snail-eating specialist Pareas iwasakii completed extracting a dextral soft body faster with fewer mandible retractions than a sinistral body. The snakes failed in holding and dropped sinistral snails more often owing to behavioural asymmetry when striking. Our results demonstrate that symmetry break in dentition is a key innovation that has opened a unique ecological niche for snake predators.

    DOI PubMed

    Scopus

    106
    Citation
    (Scopus)
  • Geography-Dependent Horizontal Gene Transfer from Vertebrate Predators to Their Prey.

    Chiaki Kambayashi, Ryosuke Kakehashi, Yusuke Sato, Hideaki Mizuno, Hideyuki Tanabe, Andolalao Rakotoarison, Sven Künzel, Nobuaki Furuno, Kazuhiko Ohshima, Yoshinori Kumazawa, Zoltán T Nagy, Akira Mori, Allen Allison, Stephen C Donnellan, Hidetoshi Ota, Masaki Hoso, Tetsuya Yanagida, Hiroshi Sato, Miguel Vences, Atsushi Kurabayashi

    Molecular biology and evolution   39 ( 4 )  2022.04  [Refereed]  [International journal]

     View Summary

    Horizontal transfer (HT) of genes between multicellular animals, once thought to be extremely rare, is being more commonly detected, but its global geographic trend and transfer mechanism have not been investigated. We discovered a unique HT pattern of Bovine-B (BovB) LINE retrotransposons in vertebrates, with a bizarre transfer direction from predators (snakes) to their prey (frogs). At least 54 instances of BovB HT were detected, which we estimate to have occurred across time between 85 and 1.3 Ma. Using comprehensive transcontinental sampling, our study demonstrates that BovB HT is highly prevalent in one geographical region, Madagascar, suggesting important regional differences in the occurrence of HTs. We discovered parasite vectors that may plausibly transmit BovB and found that the proportion of BovB-positive parasites is also high in Madagascar where BovB thus might be physically transported by parasites to diverse vertebrates, potentially including humans. Remarkably, in two frog lineages, BovB HT occurred after migration from a non-HT area (Africa) to the HT hotspot (Madagascar). These results provide a novel perspective on how the prevalence of parasites influences the occurrence of HT in a region, similar to pathogens and their vectors in some endemic diseases.

    DOI PubMed

    Scopus

    6
    Citation
    (Scopus)
  • Pareas iwasakii (Iwasaki's snail-eating snake). Diet.

    Masaki Hoso, Takehiro Kakegawa

    Herpetological Review   49 ( 4 ) 760 - 761  2018.12  [Refereed]

    Authorship:Lead author, Corresponding author

  • Mitochondrial genomes of Japanese Babina frogs (Ranidae, Anura): unique gene arrangements and the phylogenetic position of genus Babina

    Ryosuke Kakehashi, Atsushi Kurabayashi, Shohei Oumi, Seiki Katsuren, Masaki Hoso, Masayuki Sumida

    Genes & Genetic Systems   88 ( 1 ) 59 - 67  2013  [Refereed]

     View Summary

    Genus Babina is a member of Ranidae, a large family of frogs, currently comprising 10 species. Three of them are listed as endangered species. To identify mitochondrial (mt) genes suitable for future population genetic analyses for endangered species, we determined the complete nucleotide sequences of the mt genomes of 3 endangered Japanese Babina frogs, B. holsti, B. okinavana, and B. subaspera and 1 ranid frog Lithobates catesbeianus. The genes of NADH dehydrogenase subunit 5 (nad5) and the control region (CR) were found to have high sequence divergences and to be usable for population genetics studies. At present, no consensus on the phylogenetic position of genus Babina has been reached. To resolve this problem, we performed molecular phylogenetic analyses with the largest dataset used to date (11,345 bp from 2 ribosomal RNA- and 13 protein-encoding genes) in studies dealing with Babina phylogeny. These analyses revealed monophyly of Babina and Odorrana. It is well known that mt gene rearrangements of animals can provide usable phylogenetic information. Thus, we also compared the mt gene arrangements among Babina species and other related genera. Of the surveyed species, only L. catesbeianus manifested typical neobatrachian-type mt gene organization. In the B. okinavana, an additional pseudogene of tRNA-His (trnH) was observed in the CR downstream region. Furthermore, in the B. holsti and B. subaspera, the trnH/nad5 block was translocated from its typical position to the CR downstream region, and the translocated trnH became a pseudogene. The position of the trnH pseudogene is consistent with the translocated trnH position reported in Odorrana. Consequently, the trnH rearrangement seems to be a common ancestry characteristic (synapomorphy) of Babina and Odorrana. Based on the "duplication and deletion" gene rearrangement model, a single genomic duplication event can explain the order of derived mt genes found in Babina and Odorrana.

    DOI PubMed CiNii

    Scopus

    35
    Citation
    (Scopus)
  • 種間相互作用の島嶼生物地理 展望:島嶼生物地理学で拡散共進化を紐解く

    HOSO MASAKI

    日本生態学会誌   62 ( 3 ) 339 - 345  2012.11  [Refereed]  [Invited]

    Authorship:Lead author, Last author, Corresponding author

    DOI CiNii J-GLOBAL

  • 種間関係の生物学 共生・寄生・捕食の新しい姿 第4部 新しい自然史研究の手法 3 博物館標本の活用術

    HOSO MASAKI, SUZUKI MAHORO

    種生物学研究   35 ( 35 ) 357 - 375  2012.03  [Refereed]  [Invited]

    Authorship:Lead author, Corresponding author

    CiNii J-GLOBAL

  • 種間関係の生物学 共生・寄生・捕食の新しい姿 第1部 食う‐食われるの新しい姿 第2章 右と左の共進化:追いかけるヘビと逃げるカタツムリ

    HOSO MASAKI

    種生物学研究   35 ( 35 ) 53 - 68  2012.03  [Refereed]  [Invited]

    Authorship:Lead author, Corresponding author

    CiNii J-GLOBAL

  • Oviposition and Hatchling Diet of a Snail-eating Snake Pareas iwasakii (Colubridae: Pareatinae)

    HOSO Masaki

    Current Herpetology   26 ( 1 ) 41 - 43  2007.06  [Refereed]

    Authorship:Lead author, Corresponding author

     View Summary

    Pareas iwasakii, a rare pareatine snake endemic to Japan, is considered a dietary specialist on land snails. I observed the oviposition and hatchling diet of this species in captivity. One female laid six eggs on 30 September, and one of these eggs hatched on 26 November 2004. The hatchling fed on the soft body of juvenile land snails, leaving empty shells, most likely by extracting the former from the latter using its mandibles as do the adult snakes. This observation suggests that the dietary habits of P. iwasakii do not exhibit ontogenetic changes.<br>

    DOI CiNii

  • Identification of molluscan prey from feces of Iwasaki\\'s slug snake, Pareas iwasakii

    M. Hoso, M. Hori

    Herpetological Review   37 ( 2 ) 174 - 176  2006  [Refereed]

    Authorship:Lead author, Corresponding author

    CiNii

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Books and Other Publications

  • ヘビという生き方

    Lillywhite Harvey B, 細 将貴, 福山 伊吹, 福山 亮部, 児玉 知理, 児島 庸介, 義村 弘仁( Part: Other)

    東海大学出版部  2019 ISBN: 9784486021025

  • 右利きのヘビ仮説―追うヘビ、逃げるカタツムリの右と左の共進化 (フィールドの生物学)

    細 将貴( Part: Sole author)

    東海大学出版会  2012.02 ISBN: 4486018451

    ASIN

  • フィールドノート古今東西

    梶丸 岳, 丹羽 朋子, 椎野 若菜( Part: Contributor, 第6章 進化生物学者のフィールドノート ―「カタツムリのしっぽ切り」から迫る、幻のヘビの生態―)

    古今書院  2016 ISBN: 9784772271349

Presentations

▼display all

Research Projects

  • カタツムリにおける左右二型現象の起源と進化動態

    日本学術振興会  科学研究費助成事業 国際共同研究加速基金(国際共同研究強化(B))

    Project Year :

    2020.10
    -
    2026.03
     

    細 将貴

     View Summary

    新型コロナウイルス感染症の流行が継続したため、海外での現地調査が著しく制限され、研究の進展は限られている。また、研究代表者は当該年度に所属を変更したため、実験室ほかの環境整備に努める必要を生じた。以上のような困難な状況のなかで、当該年度は研究計画の遂行を概ね中断し、現地調査ができる状況になった際に円滑に研究計画を遂行できるよう、各種実験を実施できる環境を研究室に整備することに注力した。分子実験については、機器の不足を概ね解消し、ほとんど問題なく実施できる状況に整えている。飼育・行動実験については、研究計画にあるものとは異なる種のカタツムリを用いた飼育実験を実施し、問題なく飼育できることを確認した。ドライ解析については、研究室のネットワーク整備を実施し、問題なく解析用サーバーが稼働することを確認している。この解析用サーバーを使用し、集団構造の解析を一部について実施することにより、これまでの予備的な解析結果を補強する結果を得ることができた。

  • A novel left-right dimorphism in snails: understanding the actual situation and the polymorphism maintenance mechanism

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

    Project Year :

    2022.04
    -
    2025.03
     

  • 「魔法形質」による種分化過程の解明と理論構築

    文部科学省  科学研究費補助金(基盤研究(B))

    Project Year :

    2018.04
    -
    2021.03
     

    細 将貴

  • カタツムリ食ヘビの歯列非対称性は陸産貝類相の地理変異に対してどう進化的に応答するか

    昭和聖徳記念財団  学術研究助成

    Project Year :

    2018.04
    -
    2019.03
     

    細 将貴

  • 伊豆諸島の植物群における対草食獣被食防衛形質の平行的 退化

    藤原ナチュラルヒストリー振興財団  学術研究助成

    Project Year :

    2018.04
    -
    2019.03
     

    細 将貴

  • The molecular evolutionary process of speciation by a magic trait

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research

    Project Year :

    2014.04
    -
    2018.03
     

    Hoso Masaki

     View Summary

    "Magic traits", which are traits that simultaneously affect both adaptation and reproductive isolation, are known to work as a simple mechanism of speciation. Among them, the chirality of land snails has a unique advantage in that the trait status is determined by a single gene. In this research project, I conducted ecological survey, phylogeographical analyses, and crossing experiments on the species complex of the genus Satsuma in SE Taiwan, aiming to elucidate the evolutionary process of the snail chirality at the molecular level. The results suggested its complex evolutionary history beyond the original expectation, prohibiting further analyses for the identification of the responsible gene, but supported that they originated in parallel by the same gene.

  • ヘビからカエルへの遺伝子水平伝播:起源系統と発生地域の解明および媒介生物の特定

    文部科学省  科学研究費補助金(基盤研究(B))

    Project Year :

    2014.04
    -
    2017.03
     

    倉林 敦

  • The developmental mechanism of tooth position in a non-model organism

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research

    Project Year :

    2014.04
    -
    2017.03
     

    Hoso Masaki

     View Summary

    This project aimed to describe the developmental processes and the morphological details of the asymmetric dentition in the snail-eating snakes of the genus Pareas. Due to the limitation of sample availability, we were not able to show how the development of dental asymmetry proceeded. However, we obtained fine data on the dental development of corn snakes, Pantherophis guttatus, that have symmetric dentition and was used as a positive control. We identified when, where, and which genes expressed in the formation of tooth buds and how the expression patterns varied in space and time. These results revealed an unsubscribed aspect of snake biology. Moreover, these will help us to determine the developmental stages of pareid snakes to be observed in the future research. We also investigated interspecific difference of dentition asymmetry and dietary specialization between two sympatric species of Taiwanese pareid snakes and found their ecologically significant correlation.

  • 左右非対称性の共進化:究極要因と至近要因の解明

    文部科学省  日本学術振興会海外特別研究員制度

    Project Year :

    2011.04
    -
    2013.03
     

    細 将貴

  • 左右非対称性の共進化:捕食者―被食者間相互作用による種分化機構の解明

    文部科学省  特別研究員奨励費

    Project Year :

    2008.04
    -
    2011.03
     

    細 将貴

  • カタツムリ食のヘビとカタツムリの特異的な共進化-左右非対称性に注目して-

    文部科学省  科学研究費補助金(特別研究員奨励費)

    Project Year :

    2006.04
    -
    2008.03
     

    細 将貴

  • イワサキセダカヘビの食性と人里環境への適応に関する研究

    公益信託 増進会  自然環境保全研究活動助成基金

    Project Year :

    2005.07
    -
    2006.06
     

    細 将貴

  • 陸産貝類食のヘビにおける下顎形態の特殊化とその適応的意義の実験的検証

    住友財団  基礎科学研究助成

    Project Year :

    2004.11
    -
    2005.10
     

    細 将貴

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Misc

  • ヘビからカエルへの遺伝子水平伝播:起源系統とその伝播メカニズム

    神林千晶, 掛橋竜祐, 佐藤祐輔, 古野伸明, 水野英明, 大島一彦, 熊澤慶伯, NAGY Zoltan, 森哲, ALLISON Allen, DONNELLAN Stephen, 太田英利, 細将貴, 柳田哲矢, 佐藤宏, VENCES Miguel, 倉林敦

    爬虫両棲類学会報   2019 ( 1 )  2019

    J-GLOBAL

  • 四季のカガク : 梅雨 進化は繰り返す カタツムリの科学

    細 将貴

    化学 = Chemistry   71 ( 6 ) 41 - 44  2016.06

    CiNii

  • 愛と分子 7 雌雄はないが裏表と左右はある カタツムリの愛

    HOSO MASAKI

    現代化学   ( 532 ) 52 - 55  2015.07

    CiNii J-GLOBAL

  • 研究室の片隅で生き物への愛を語る 『右利きのヘビ』で解く,左巻きカタツムリの謎

    HOSO MASAKI

    生物工学会誌   93 ( 3 ) 170 - 175  2015.03

    CiNii J-GLOBAL

  • 左巻きのカタツムリで検証する「分子進化のほぼ中立説」

    HOSO MASAKI

    生物の科学 遺伝   67 ( 3 ) 385 - 390  2013.05

    CiNii J-GLOBAL

  • 左巻きのカタツムリと右利きのヘビ

    Hoso Masaki

    緑と水のひろば   72   18 - 19  2013

  • 右利きのヘビと左巻きのカタツムリ

    HOSO MASAKI

    生物の科学 遺伝   65 ( 4 ) 2 - 8  2011.07

    CiNii J-GLOBAL

  • ヤエヤマアオガエル卵塊の9月初旬の観察例

    HOSO MASAKI

    は虫両棲類学会報   2002 ( 1 ) 5 - 6  2002.03

    DOI J-GLOBAL

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Syllabus

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Teaching Experience

  • Evolutionary Biology

    Waseda University  

    2021.04
    -
    Now
     

  • Evolutionary Biology 1

    Waseda University  

    2021.04
    -
    Now
     

  • Ecology

    Musashino Art University  

    2020.10
    -
    2021.03
     

  • 動物の身体と進化A/B

    武蔵野美術大学  

    2020.10
    -
    2021.03
     

  • 生物自然史A/B

    武蔵野美術大学  

    2020.04
    -
    2020.09
     

  • 生命科学A/B

    武蔵野美術大学  

    2020.04
    -
    2020.09
     

  • 自然科学史

    龍谷大学  

    2017.04
    -
    2017.09
     

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Sub-affiliation

  • Faculty of Science and Engineering   Graduate School of Advanced Science and Engineering

Internal Special Research Projects

  • カタツムリにおける左右二型現象の解明:多型維持機構と種分化機構をつなぐ

    2023  

     View Summary

    野外調査により、遺伝的集団構造の解明に必要となる多地点多検体の採集をおこなった。また、交配実験に必要となる未成熟個体を多数採集することに成功した。交配実験では、左右二型間で実際に交尾が行われることが確認された。想定されていた長期間にわたる飼育に成功し、飼育下で繁殖させることが容易であることが確認された。現在、野外採集個体の遺伝型を確定するために必要となる、遺伝様式の調査を進めている。

  • カタツムリにおける左右二型現象の解明:多型維持機構と種分化機構をつなぐ

    2022  

     View Summary

    MIG-seqによって得られた多数のSNPを用いることにより、集団構造をADMIXTUREで解析した。これにより、調査対象としてきた分類群をいくつかの集団にまとめることが可能になり、今後の解析の基盤を固めることができた。

  • カタツムリにおける左右二型現象の解明:多型維持機構と種分化機構をつなぐ

    2021  

     View Summary

    リシーケンスゲノムの解析を実施し、1.4億個を超えるSNPを検出した。表現型で完全に分離したSNPを含む領域は5つに分かれており、そのひとつは40の完全に分離したSNPのうち28個を含んでおり、責任遺伝子を含んでいる可能性が濃厚であると考えられた。