Yamahira Kazunori

写真a

Title

Professor

Researcher Number(JSPS Kakenhi)

20322589

2

Current Affiliation Organization 【 display / non-display

  • Duty   University of the Ryukyus   Tropical Biosphere Research Center   Professor  

  • Concurrently   University of the Ryukyus   Graduate School of Engineering and Science  

University 【 display / non-display

  •  
    -
    1992.03

    Kyushu University   Faculty of Science   Graduated

Graduate School 【 display / non-display

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    1996.09

    Kyushu University  Graduate School, Division of Natural Science  Doctor's Course  Completed

Academic degree 【 display / non-display

  •  -  Dr. (Science)

External Career 【 display / non-display

  • 1999.10
    -
    2002.03

    Kyushu Kyoritsu University, Faculty of Engineering, Lecturer  

  • 2002.04
    -
    2010.04

    Niigata Univerisity, Faculty of Science, Associate Professor  

  • 2010.05
     
     

    University of the Ryukyus  

  • 2010.05
     
     

    University of the Ryukyus, Tropical Biosphere Research Center, Professor  

Affiliated academic organizations 【 display / non-display

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    American Society of Ichthyologists and Herpetologists 

  • 1900.04
    -
    Now
     

    Ecological Society of Japan 

  • 1900.04
    -
    Now
     

    Japanese Association of Benthology 

  • 1900.04
    -
    Now
     

    Ichthyological Society of Japan 

  • 1900.04
    -
    Now
     

    Society of Evolutionary Studies, Japan 

Research Interests 【 display / non-display

  • 変異

  • 二次性徴

  • メダカ

  • スラウェシ

  • variation

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Research Areas 【 display / non-display

  • Life Science / Evolutionary biology

  • Life Science / Ecology and environment

  • Life Science / Evolutionary biology

  • Life Science / Ecology and environment

Research Theme 【 display / non-display

  • Latitudinal cline in species diveristy of Oryzias

  • Latitudinal cline in sexual selection in Oryzias spp.

  • Latitudinal variation in life histories of Oryzias spp.

Published Papers 【 display / non-display

  • Do colour-morphs of an amphidromous goby represent different species? Taxonomy of Lentipes (Gobiiformes) from Japan and Palawan, Philippines, with phylogenomic approaches

    Maeda K.

    Systematics and Biodiversity ( Systematics and Biodiversity )    1 - 33   2021.10 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

  • Species divergence and repeated ancient hybridization in a Sulawesian lake system.

    Mandagi IF, Kakioka R, Montenegro J, Kobayashi H, Masengi KWA, Inomata N, Nagano AJ, Toyoda A, Ansai S, Matsunami M, Kimura R, Kitano J, Kusumi J, Yamahira K

    Journal of evolutionary biology ( Journal of Evolutionary Biology )    2021.09 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

  • Mesozoic origin and 'out-of-India' radiation of ricefishes (Adrianichthyidae).

    Yamahira K, Ansai S, Kakioka R, Yaguchi H, Kon T, Montenegro J, Kobayashi H, Fujimoto S, Kimura R, Takehana Y, Setiamarga DHE, Takami Y, Tanaka R, Maeda K, Tran HD, Koizumi N, Morioka S, Bounsong V, Watanabe K, Musikasinthorn P, Tun S, Yun LKC, Masengi KWA, Anoop VK, Raghavan R, Kitano J

    Biology letters ( Biology Letters )  17 ( 8 ) 20210212   2021.08 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

  • Resource partitioning is not coupled with assortative mating in sympatrically divergent ricefish in a Wallacean ancient lake.

    Kakioka R, Sutra N, Kobayashi H, Ansai S, Masengi KWA, Nagano AJ, Okuda N, Tanaka R, Sato M, Yamahira K

    Journal of evolutionary biology ( Journal of Evolutionary Biology )  34 ( 7 ) 1133 - 1143   2021.07 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

     View Summary

    Sympatric speciation is considered to be difficult without the coupling between ecological traits that allow resource partitioning and reproductive traits that allow assortative mating. Such "magic traits" are known to be involved in most of the compelling examples of sympatric speciation. In this study, we report a possible case of sympatric speciation without magic traits. Three species of ricefish (genus Oryzias) are suggested to have diverged sympatrically within Lake Poso, an ancient lake in Sulawesi. An analysis of genome-wide single-nucleotide polymorphisms showed that these three species are reproductively isolated from each other throughout the lake. Stable isotope analyses revealed that the three species use different food resources, which reflect differences in their feeding morphologies (gill rakers and digestive tracts) and feeding sites. Field and laboratory observations showed that O. nebulosus and O. orthognathus share a mating habitat of cobbles, where they scatter fertilized eggs, whereas this site is never used by O. nigrimas, indicating that assortative mating is partly achieved by spatial isolation. The small, less-adhesive eggs of O. nebulosus and O. orthognathus probably reflect their adaptation to spawning on cobble beaches. Laboratory mating experiments showed strong prezygotic isolation between O. nebulosus and O. orthognathus, which is achieved by strong species recognition presumably by both sexes based on species-specific mating dances and nuptial coloration. In summary, the assortative mating of O. nebulosus and O. orthognathus is probably not coupled to resource partitioning. We discussed how sympatric speciation among these species might have been achieved even without magic traits.

  • Genome editing reveals fitness effects of a gene for sexual dichromatism in Sulawesian fishes.

    Ansai S, Mochida K, Fujimoto S, Mokodongan DF, Sumarto BKA, Masengi KWA, Hadiaty RK, Nagano AJ, Toyoda A, Naruse K, Yamahira K, Kitano J

    Nature communications ( Nature Communications )  12 ( 1 ) 1350   2021.03 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

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Books 【 display / non-display

  • Medaka: Biology, Management, and Experimental Protocols (Chapter 2: Medaka and Oryzias species as model organisms and the current status of medaka biological resources)

    山平 寿智 ( Part: Allotment Writing )

    ■■■  2019.11

Other Papers 【 display / non-display

  • Fitness effects of a gene for sexual dimorphism revealed by genome editing in a Sulawesian fish

    安齋賢, 安齋賢, 安齋賢, 持田浩治, 持田浩治, 藤本真悟, MOKODONGAN Daniel F., MOKODONGAN Daniel F., SUMARTO Bayu Kreshna Adhitya, MASENGI Kawilarang W. A., HADIATY Renny K., 永野惇, 豊田敦, 成瀬清, 山平寿智, 北野潤

    日本生態学会大会講演要旨(Web)   68th   2021

     

    J-GLOBAL

  • Different evolutionary histories of cave fishes on the same island

    小林大純, MASENGI Kawilarang W. A., 山平寿智

    日本生態学会大会講演要旨(Web)   68th   2021

     

    J-GLOBAL

  • Non-migratory ecology and systematics of ′′Redigobius penango′′ in Sulawesi

    小林大純, 袰岩美月, MOKODONGAN Daniel F., 安田仁奈, 白井厚太朗, 飯田碧, 山平寿智

    日本魚類学会年会講演要旨   54th (CD-ROM)   2020

     

    J-GLOBAL

  • Speciation of medaka fishes in ancient lakes of Sulawesi

    山平寿智

    日本生態学会大会講演要旨(Web)   67th   2020

     

    J-GLOBAL

  • Study on existence of the fisheries resources abundance by using environmental deoxyribonucleic acid (e-DNA) approach at fishing grounds in the Sulawesi Sea, Indonesia

    Masengi K.

    IOP Conference Series: Materials Science and Engineering ( IOP Conference Series: Materials Science and Engineering )  567 ( 1 )   2019.08  [Refereed]

     

    DOI

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Grant-in-Aid for Scientific Research 【 display / non-display

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SDGs 【 display / non-display

  • 熱帯の生物多様性の創出に関する研究

  • 野生絶滅したエバーシメダカの室内系統の確立と野生復帰に向けた基礎生物学的データの収集