Updated on 2025/01/31

写真a

 
OKUZAKI YUTAKA
 
Organization
Faculty of Liberal Arts, Sciences and Global Education Associate Professor
Title
Associate Professor
Affiliation
Institute of Liberal Arts, Sciences and Global Education

Position

  • Faculty of Liberal Arts, Sciences and Global Education 

    Associate Professor  2023.04 - Now

Degree

  • 博士(理学) ( Kyoto University )

  • 修士(理学) ( Kyoto University )

  • 学士(理学) ( Kyoto University )

Research Areas

  • Natural Science / Biogeosciences

Research Interests

  • ecology, evolution, entomology

Professional Memberships

  • 日本動物行動学会

    2021 - Now

  • 個体群生態学会

    2016 - Now

  • 日本昆虫学会

    2011 - Now

  • 日本生態学会

    2007 - Now

Committee Memberships (off-campus)

  • 国際生物学オリンピック日本委員会「日本生物学オリンピック2024」本選作題委員   国際生物学オリンピック日本委員会  

    2024 - 2024.09 

Awards

  • 個体群生態学会奨励賞

    奥崎 穣

    2019.09   個体群生態学会   ミミズ食オサムシの群集依存的な体サイズ分化

Job Career (off-campus)

  • Osaka Metropolitan University   Faculty of Liberal Arts, Sciences and Global Education

    2023.04 - Now

  • The University of Tokyo   Graduate School of Arts and Sciences

    2020.04 - 2023.03

  • 東海大学   非常勤講師

    2019.04 - 2020.03

  • Hokkaido University   Field Science Center for Northern Biosphere Forest Research Station

    2017.08 - 2020.03

Education

  • Kyoto University   Doctor's Course   Graduated/Completed

    2007.04 - 2010.03

  • Kyoto University   Master's Course   Graduated/Completed

    2005.04 - 2007.03

  • Kyoto University   Bachelor's Course   Graduated/Completed

    2001.04 - 2005.03

Papers

  • Origin and diversification of pheretimoid megascolecid earthworms in the Japanese Archipelago as revealed by mitogenomic phylogenetics Reviewed

    Chika Sato, Noriko Nendai, Nobuaki Nagata, Yutaka Okuzaki, Hiroshi Ikeda, Yukio Minamiya, Teiji Sota

    Molecular Phylogenetics and Evolution   182   107735   2023.05( ISSN:1055-7903 ( eISSN:1095-9513

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    Publishing type:Research paper (scientific journal)   International / domestic magazine:International journal  

    Megascolecid earthworms of the pheretimoid group are dominant detritivores of soil ecosystems in the Japanese Archipelago and East Asia. However, their diversity and phylogenetic relationships are poorly understood. We assembled whole mitogenome sequences for 197 megascolecid earthworms collected throughout Japan to study the phylogenetic relationships, phylogeography, divergence times, and diversification of important morphological characteristics among pheretimoid earthworms. Using 197 mitogenome sequences and 24 published mitogenome sequences from the East Asian mainland (221 sequences in total), we constructed a maximum likelihood tree and found that the pheretimoid earthworms currently assigned to Amynthas, Metaphire, Duplodicodrilus, and Manus are involved in the most senior genus Amynthas; thus, Amynthas can be treated as the sole genus encompassing all of the above genera. Within the Amynthas group, we identified three major lineages that led to four groups of endemic species in Japan. These lineages originated from different lineages on the East Asian mainland and Taiwan Island, indicating multiple colonization events from the East Asian mainland by different ancestral lineages, possibly after the Miocene. We also assembled nuclear ribosomal DNA sequences encompassing the 18S to 28S rRNA genes. The nuclear gene tree showed major groups consistent with the mitogenome tree except for different (and not well-resolved) relationships among major clades. Our molecular data covered 115–158 native and 7 non-native Amynthas group species in Japan in terms of DNA-based species delimitation. Our findings provide a basis for understanding the evolutionary relationships among diversified megascolecid earthworms in the Amynthas group in Japan and adjacent regions.

    DOI: 10.1016/j.ympev.2023.107735

  • First specimen-based record of the freshwater crab Geothelphusa dehaani (White, 1847) (Decapoda: Brachyura: Potamidae) in Hokkaido, northern Japan Reviewed

    Ryohei Sugime, Yutaka Okuzaki, Katsumi Furuse, Osamu Kishida, Tohru Naruse

    Crustacean Research   51   39 - 45   2022.07( ISSN:0287-3478 ( eISSN:2189-5317

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    Publishing type:Research paper (scientific journal)   International / domestic magazine:International journal  

    DOI: 10.18353/crustacea.51.0_39

  • Effects of body size divergence on male mating tactics in the ground beetle Carabus japonicus Reviewed

    Yutaka Okuzaki

    Evolution   75 ( 9 )   2269 - 2285   2021.07

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    Authorship:Lead author, Last author, Corresponding author   Publishing type:Research paper (scientific journal)   International / domestic magazine:International journal  

    DOI: 10.1111/evo.14302

  • Taxonomic and nomenclatural changes in three species of Pterostichus Bonelli (Coleoptera: Carabidae) from the Far East Reviewed International coauthorship

    Koji Sasakawa, Oleg Berlov, Yutaka Okuzaki

    ZOOTAXA   4822 ( 3 )   416 - 424   2020.08( ISSN:1175-5326 ( eISSN:1175-5334

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    Publishing type:Research paper (scientific journal)   International / domestic magazine:International journal  

    The ground beetle genus Pterostichus Bonelli has diversified in regions including the Far East, but taxonomic issues remain even at the species level. This study presents taxonomic and nomenclatural changes in three species of Pterostichus from the Far East: P. (Petrophilus) eximius Morawitz, P. (Lenapterus) wellschmiedi Kirschenhofer, and P. (L.) subrugosus Straneo. The analyses are based on comparative studies of the endophallus of male genitalia, which is taxonomically useful in Carabidae but has not been examined in these species. The first species, P. eximius, has been treated as a monotypic species that is widely distributed in Eastern Siberia, the Russian Far East, and adjacent regions, but our results revealed that populations from Rishiri-to and the Sakhalin islands are distinct from the nominotypical population from Transbaikalia. The name for the Sakhalin population, which was synonymized with P. eximius, is reinstated as subspecies P. eximius sachalinensis stat. nov., and the Rishiri-to population is described as Pterostichus eximius rishiridakensis ssp. nov. Conspecificity (syn. nov.) was confirmed for P. wellschmiedi, which was described from southern Sakhalin, and P. marginatus Matsumura, which was described earlier from southern Sakhalin. No conspicuous differences in the endophallus structure were found between P. subrugosus, which was described from Hokkaido, and P. marginatus, although differences are recognized in the elytral sculptures and in the metallic luster of the dorsal surface. The taxon was thus downgraded to subspecies P. marginatus subrugosus stat. nov.

    DOI: 10.11646/zootaxa.4822.3.6

  • Toward more rapid and efficient peer review: A case study on publication in Ecological Research Reviewed

    Okuzaki, Yutaka, Nakamura, Shoko, Nakaoka, Masahiro

    Ecological Research   34 ( 5 )   563 - 574   2019.09( ISSN:0912-3814 ( eISSN:1440-1703

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    Publishing type:Research paper (scientific journal)   International / domestic magazine:International journal  

    The peer-review system ensures the reliability of academic publication. However, authors may be unsatisfied with the duration of peer-review and/or the reviewers' comments, whereas both reviewers and editors have many concerns over peer-reviewing. To provide information to increase the efficiency of the peer-review process for authors, reviewers and editors, we analyzed recent trends in publication and peer-review processes in Ecological Research, and asked Editorial Board members to answer an online questionnaire. The acceptance rate of Original Articles, which accounted for 89.2% of all submissions, was 20.1%, whereas those of Special Features, Data Papers, and Technical Reports were 76.3, 73.7 and 38.3%, respectively. The median number of days to final decision was 168 for accepted manuscripts. The stage when handling editors invited reviewers to review was the longest stage during the peer-review process. This stage was prolonged when potential reviewers declined the invitations to review. The results of the questionnaire revealed that both editors and reviewers felt burdened by the load of peer-reviewing. Most editors encountered declining of peer-review invitations. As the period of assigning reviewers is the most important step in determining the number of days to the final decision, the editorial office should support handling editors to locate reviewers. Motivating reviewers to review manuscripts is another way to speed up the process. Since many respondents indicated that improvements in the logical structure and English standard of manuscripts would facilitate review, authors could improve the process by carefully preparing their manuscripts with consideration to readers, including voluntary reviewers and editors.

    DOI: 10.1111/1440-1703.12037

  • Predator size divergence depends on community context Reviewed

    Yutaka Okuzaki, Teiji Sota

    Ecology Letters   21 ( 7 )   1097 - 1107   2018.07

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    Authorship:Lead author, Corresponding author   Publishing type:Research paper (scientific journal)   International / domestic magazine:International journal  

    DOI: 10.1111/ele.12976

  • Genomic regions and genes related to inter-population differences in body size in the ground beetle Carabus japonicus Reviewed

    Ryohei Komurai, Tomochika Fujisawa, Yutaka Okuzaki, Teiji Sota

    Scientific Reports   7   7773   2017.08

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    Publishing type:Research paper (scientific journal)   International / domestic magazine:International journal  

    DOI: 10.1038/s41598-017-08362-7

  • Factors Related to Altitudinal Body Size Variation in the Earthworm-eating Ground Beetle Carabus japonicus Reviewed

    Yutaka Okuzaki, Teiji Sota

    Zoological Science   34 ( 3 )   229 - 234   2017.06

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    Authorship:Lead author, Corresponding author   Publishing type:Research paper (scientific journal)   International / domestic magazine:International journal  

    DOI: 10.2108/zs160182

  • 生態学者のための分光計測 Reviewed

    奥崎 穣, 持田 浩治, 永井 信, 中路 達郎, 小熊 宏之

    日本生態学会誌   67 ( 1 )   41 - 56   2017

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    Authorship:Lead author, Corresponding author   Publishing type:Research paper (scientific journal)   International / domestic magazine:Domestic journal  

    DOI: 10.18960/seitai.67.1_41

  • Body size evolution under character release in the ground beetle Carabus japonicus Reviewed

    Yutaka Okuzaki, Hisashi Sugawara, Teiji Sota

    Journal of Biogeography   42 ( 11 )   2145 - 2158   2015.11

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    Authorship:Lead author, Corresponding author   Publishing type:Research paper (scientific journal)   International / domestic magazine:International journal  

    DOI: 10.1111/jbi.12575

  • Wing morphology is linked to stable isotope composition of nitrogen and carbon in ground beetles (Coleoptera: Carabidae) Reviewed International coauthorship

    Marcin Zalewski, Dorota Dudek-Godeau, Alexei V. Tiunov, Jean-Franois Godeau, Yutaka Okuzaki, Hiroshi Ikeda, Pawel Sienkiewicz, Werner Ulrich

    European Journal of Entomology   112 ( 4 )   810 - 817   2015

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    Publishing type:Research paper (scientific journal)   International / domestic magazine:International journal  

    DOI: 10.14411/eje.2015.072

  • How the length of genital parts affects copulation performance in a carabid beetle: implications for correlated genital evolution between the sexes Reviewed

    Y. Okuzaki, T. Sota

    Journal of Evolutionary Biology   27 ( 3 )   565 - 574   2014.03

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    Authorship:Lead author   Publishing type:Research paper (scientific journal)   International / domestic magazine:International journal  

    DOI: 10.1111/jeb.12323

  • High niche overlap in the stable isotope space of ground beetles Reviewed International coauthorship

    Marcin Zalewski, Dorota Dudek, Alexei V. Tiunov, Jean-François Godeau, Yutaka Okuzaki, Hiroshi Ikeda, Paweł Sienkiewicz, Werner Ulrich

    Annales Zoologici Fennici   51 ( 3 )   301 - 312   2014

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    Publishing type:Research paper (scientific journal)   International / domestic magazine:International journal  

    DOI: 10.5735/086.051.0302

  • Genetic differences and phenotypic plasticity in body size between high- and low-altitude populations of the ground beetle Carabus tosanus Reviewed

    Y. Tsuchiya, Y. Takami, Y. Okuzaki, T. Sota

    Journal of Evolutionary Biology   25 ( 9 )   1835 - 1842   2012.09

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    Publishing type:Research paper (scientific journal)   International / domestic magazine:International journal  

    DOI: 10.1111/j.1420-9101.2012.02568.x

  • Mating Behavior and the Function of the Male Genital Spine in the Ground Beetle Carabus clathratus Reviewed

    Yutaka Okuzaki, Yasuoki Takami, Yuzo Tsuchiya, Teiji Sota

    Zoological Science   29 ( 7 )   428 - 432   2012.07

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    Authorship:Lead author, Corresponding author   Publishing type:Research paper (scientific journal)   International / domestic magazine:International journal  

    DOI: 10.2108/zsj.29.428

  • 同所的オオオサムシ亜属種間の体サイズ差の意味:資源分割よりも必要とされる生殖隔離 Reviewed

    奥崎 穣, 高見 泰興, 曽田 貞滋

    日本生態学会誌   62 ( 2 )   275 - 285   2012

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    Authorship:Lead author, Corresponding author   Publishing type:Research paper (scientific journal)   International / domestic magazine:Domestic journal  

    DOI: 10.18960/seitai.62.2_275

  • Stable isotope analysis indicates trophic differences among forest floor carabids in Japan Reviewed

    Yutaka Okuzaki, Ichiro Tayasu, Noboru Okuda, Teiji Sota

    Entomologia Experimentalis et Applicata   135 ( 3 )   263 - 270   2010.06

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    Authorship:Lead author, Corresponding author   Publishing type:Research paper (scientific journal)   International / domestic magazine:International journal  

    DOI: 10.1111/j.1570-7458.2010.00987.x

  • Resource partitioning or reproductive isolation: the ecological role of body size differences among closely related species in sympatry Reviewed

    Yutaka Okuzaki, Yasuoki Takami, Teiji Sota

    Journal of Animal Ecology   79 ( 2 )   383 - 392   2010.03

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    Authorship:Lead author, Corresponding author   Publishing type:Research paper (scientific journal)   International / domestic magazine:International journal  

    DOI: 10.1111/j.1365-2656.2009.01645.x

  • Vertical heterogeneity of a forest floor invertebrate food web as indicated by stable-isotope analysis Reviewed

    Yutaka Okuzaki, Ichiro Tayasu, Noboru Okuda, Teiji Sota

    Ecological Research   24 ( 6 )   1351 - 1359   2009.10

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    Authorship:Lead author, Corresponding author   Publishing type:Research paper (scientific journal)   International / domestic magazine:International journal  

    DOI: 10.1007/s11284-009-0619-0

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Books and Other Publications

  • Lake Biwa: Interactions between Nature and People: Second Edition

    Noboru Okuda, Tomohiro Takeyama, Takefumi Komiya, Yoshikazu Kato, Yutaka Okuzaki, Zin’ichi Karube, Yoichiro Sakai, Michio Hori, Ichiro Tayasu, Toshi Nagata( Role: Contributor ,  Chapter 3.2.4)

    Springer  2020.08 

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    Total pages:932   Responsible for pages:331-337   Book type:Scholarly book

  • 新オサムシ学 : 生態から進化まで

    奥崎穣( Role: Contributor ,  2章8節)

    北隆館  2013.08 

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    Total pages:209   Responsible for pages:116-139   Book type:Scholarly book

  • Lake Biwa : Interactions between Nature and People

    Noboru Okuda, Tomohiro Takeyama, Takefumi Komiya, Yoshikazu Kato, Yutaka Okuzaki, Jin’ichi Karube, Yoichiro Sakai, Michio Hori, Ichiro Tayasu, Toshi Nagata( Role: Contributor ,  Chapter 3.2.4)

    Springer  2012.05 

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    Total pages:744   Responsible for pages:205-210   Book type:Scholarly book

MISC

  • Mechanism of sexual trait diversification independent of environmental effects: changes in male mating tactics due to body size divergence International journal

    52   26 - 31   2022( ISSN:1342-2367

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    Authorship:Lead author, Corresponding author   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)   International / domestic magazine:Domestic journal  

    DOI: 10.19004/taxa.52.0_26

    J-GLOBAL

  • On the species identities of the Pterostichus thunbergi species group (Coleoptera: Carabidae) from the alpine zones of Rishiri-tô Island and the Daisetsuzan Mountains, Hokkaidô, northern Japan International journal

    Koji Sasakawa, Yutaka Okuzaki

    Bulletin of the Faculty of Education, Chiba University   68   365 - 368   2020.03

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    Authorship:Last author   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)   International / domestic magazine:Domestic journal  

    DOI: 10.20776/S13482084-68-P365

  • 利尻山山頂からのキタオカトビムシ(節足動物門:甲殻亜門:端脚目)の記録 International journal

    富川 光, 奥崎 穣

    利尻研究   39   23 - 25   2020

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    Publishing type:Article, review, commentary, editorial, etc. (scientific journal)   International / domestic magazine:Domestic journal  

  • 気温,近縁種,餌サイズが影響するヒメオサムシの大きさ

    奥崎穣

    昆虫と自然   54 ( 5 )   2019( ISSN:0023-3218

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  • 交尾器の進化生物学 オサムシ亜族の雄交尾器内袋突起物の機能 International journal

    奥崎穣

    昆虫と自然   52 ( 1 )   17 - 20   2017

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    Authorship:Lead author, Last author, Corresponding author   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)   International / domestic magazine:Domestic journal  

  • オサムシの分布パターンを決める鍵-繁殖干渉を避ける体サイズ差 International journal

    奥崎穣

    昆虫と自然   46 ( 3 )   19 - 23   2011

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    Authorship:Lead author, Last author, Corresponding author   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)   International / domestic magazine:Domestic journal  

  • 大津市瀬田丘陵の里山林における地表徘徊性昆虫群集と環境要因 International journal

    谷垣 岳人 , 奥崎 穣

    龍谷大学 里山学・地域共生学 オープン・リサーチ・センター 2008年度報告書   306 - 319   2009

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    Authorship:Last author   Publishing type:Rapid communication, short report, research note, etc. (bulletin of university, research institution)   International / domestic magazine:Domestic journal  

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Grant-in-Aid for Scientific Research

  • 高山植物の送粉者はどこから来るのか?:徘徊性甲虫を宿主とする寄生バエの送粉効果

    Grant-in-Aid for Scientific Research(B)  2019

  • 分光技術を用いた捕食寄生者による甲虫の体色進化の実証

    Grant-in-Aid for Early-Career Scientists  2016

  • 寒冷地でのオサムシの色彩進化:昼行性へのニッチシフトと鳥による捕食の回避

    Grant-in-Aid for JSPS Fellows  2013

  • 狭食性捕食者における体サイズ変異要因の解明

    Grant-in-Aid for Special Purposes  2009

Incentive donations / subsidies

  • 寄生バエにおける捕食被食関係を介した高次分類群間の宿主転換

    公益財団法人秋山記念生命科学振興財団  研究助成(奨励)  2017

  • 植生の違いが駆動する分解者と捕食者の体サイズ進化:落葉,ミミズ,オサムシによる実証

    公益財団法人日本科学協会  笹川科学研究助成  2016

  • 九州産ヒメオサムシにおける体サイズ分化がもたらす生殖的隔離

    公益財団法人藤原ナチュラルヒストリー振興財団  学術研究助成  2011

Charge of on-campus class subject

  • 生物学実験A

    2024   Weekly class   Undergraduate

  • 生物学実験A

    2024   Weekly class   Undergraduate

  • 生物学実験A

    2024   Weekly class   Undergraduate

  • 生物学1

    2024   Weekly class   Undergraduate

  • 生物学への招待

    2024   Weekly class   Undergraduate

  • 生物学実験B

    2024   Weekly class   Undergraduate

  • 生物学実験A

    2024   Weekly class   Undergraduate

  • 生物学2

    2024   Weekly class   Undergraduate

  • 生物学実験A

    2023   Weekly class   Undergraduate

  • 生物学実験A

    2023   Weekly class   Undergraduate

  • 生物学実験A

    2023   Weekly class   Undergraduate

  • 生物学1

    2023   Weekly class   Undergraduate

  • 生物学への招待

    2023   Weekly class   Undergraduate

  • 生物学実験B

    2023   Weekly class   Undergraduate

  • 生物学実験A

    2023   Weekly class   Undergraduate

  • 生物学2

    2023   Weekly class   Undergraduate

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Charge of off-campus class subject

  • 生物社会学I

    2021.04
    -
    2023.03

  • 複合系計画論

    2021.04
    -
    2023.03

  • 全学自由研究ゼミナール

    2021.04
    -
    2022.03

  • Biodiversity and Ecosystems

    2020.04
    -
    2023.03
    Institution:The University of Tokyo, Graduate School of Arts and Sciences

  • 自然科学ゼミナール(生命科学)

    2020.04
    -
    2023.03

  • 生物圏・地球圏システム科学実験

    2020.04
    -
    2023.03

  • 生態学

    2020.04
    -
    2023.03

  • 生態・進化学I

    2020.04
    -
    2023.03

  • 広域システム概論II

    2020.04
    -
    2023.03

  • 北海道の野生生物

    2019.04
    -
    2020.03
    Institution:Tokai University

  • 公開森林実習

    2017.08
    -
    2020.03

  • 森林フィールド講座

    2017.08
    -
    2020.03

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