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Genetic mechanism of parallel evolution in a shell brooding dwarf cichlid

Research Project

Project/Area Number 18H02499
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 45030:Biodiversity and systematics-related
Research InstitutionUniversity of Hyogo

Principal Investigator

Takahashi Tetsumi  兵庫県立大学, 自然・環境科学研究所, 教授 (70432359)

Co-Investigator(Kenkyū-buntansha) 曽田 貞滋  京都大学, 理学研究科, 教授 (00192625)
渡邉 正勝  大阪大学, 大学院生命機能研究科, 准教授 (90323807)
Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2021: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2020: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2019: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2018: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Keywords古代湖 / シクリッド / 平行進化 / 適応放散 / 国際協力 / 適応進化
Outline of Final Research Achievements

The endemic cichlid species to Lake Tanganyika, Telmatochromis temporalis, consists normal morph, which inhabits rocky bottom, and dwarf morph, which inhabits shell-bed. The dwarf morph evolved from the normal morph in parallel at two localities. This study aimed to reveal molecular mechanism of the parallel evolution. During study period, we produced F2 individuals from a cross family between the normal and dwarf morphs, and conducted a QTL analysis. As a result, we found at least four loci that associate with difference in body size between the morphs. Further, we conducted morphological and molecular analyses for the third morph "slender morph", and revealed that this morph is different from the other morphs of T. temporalis or the other species.

Academic Significance and Societal Importance of the Research Achievements

Telmatochromis temporalisの普通型と矮小型は、体サイズを介した生態的種分化の例である。また両型の体サイズは分断自然選択と生殖隔離の両方と関係することから、マジックトレイトと考えられる。両型は遺伝的に近いことから、種分化の途上にあると考えられる。このことから、多様な生物を創出したメカニズムの一つと考えられる生態的種分化の詳細を調べるのに適した材料であり、本研究でその遺伝的基盤を探索したことは、進化生物学的にも意義がある。昨今、高校でも進化について深く学ぶようになってきた。代表者は積極的に本成果を高校生や一般の方にセミナーで話しており、本研究の社会的意義は高いと考える。

Report

(5 results)
  • 2022 Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (11 results)

All 2021 2020 2019 2018 Other

All Int'l Joint Research (3 results) Journal Article (6 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 5 results,  Open Access: 1 results) Book (2 results)

  • [Int'l Joint Research] Department of Fisheries(ザンビア)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] Ministry of Fisheris and Livestock(ザンビア)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Ministry of Fisheries and Livestock(ザンビア)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Mapping of quantitative trait loci underlying a magic trait in ongoing ecological speciation2021

    • Author(s)
      Takahashi Tetsumi、Nagano Atsushi J.、Sota Teiji
    • Journal Title

      BMC Genomics

      Volume: 22 Issue: 1 Pages: 615-615

    • DOI

      10.1186/s12864-021-07908-4

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A new linkage group involved in sex determination in haplotilapiine cichlids2021

    • Author(s)
      Takahashi Tetsumi
    • Journal Title

      Journal of Fish Biology

      Volume: 99 Issue: 5 Pages: 1765-1768

    • DOI

      10.1111/jfb.14869

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Brood parasitism of an open-water spawning cichlid by the cuckoo catfish2020

    • Author(s)
      Tetsumi Takahashi, Stephan Koblmueller
    • Journal Title

      Journal of Fish Biology

      Volume: - Issue: 6 Pages: 1538-1542

    • DOI

      10.1111/jfb.14350

    • Related Report
      2020 Annual Research Report 2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A ddRAD-based population genetics and phylogenetics of an endangered freshwater fish from Japan2020

    • Author(s)
      Takahashi Tetsumi、Nagano Atsushi J.、Kawaguchi Lina、Onikura Norio、Nakajima Jun、Miyake Takuya、Suzuki Noriyasu、Kanoh Yoshihiko、Tsuruta Tetsuya、Tanimoto Takuya、Yasui Yukio、Oshima Noriyuki、Kawamura Kouichi
    • Journal Title

      Conservation Genetics

      Volume: 21 Issue: 4 Pages: 641-652

    • DOI

      10.1007/s10592-020-01275-5

    • Related Report
      2020 Annual Research Report 2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A new morph of Telmatochromis temporalis (Cichlidae; Cichliformes) from Lake Tanganyika2020

    • Author(s)
      Takahashi Tetsumi
    • Journal Title

      Hydrobiologia

      Volume: 848 Issue: 16 Pages: 3655-3665

    • DOI

      10.1007/s10750-020-04433-5

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Colour variation of a shell-brooding cichlid fish from Lake Tanganyika2019

    • Author(s)
      Tetsumi Takahashi
    • Journal Title

      Hydrobiologia

      Volume: 832 Issue: 1 Pages: 193-200

    • DOI

      10.1007/s10750-018-3717-6

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Book] 古代湖(日本魚類学会編 魚類の百科事典)2018

    • Author(s)
      高橋鉄美
    • Publisher
      丸善出版
    • ISBN
      9784621303177
    • Related Report
      2018 Annual Research Report
  • [Book] 新種(日本魚類学会編 魚類の百科事典)2018

    • Author(s)
      高橋鉄美
    • Publisher
      丸善出版
    • ISBN
      9784621303177
    • Related Report
      2018 Annual Research Report

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Published: 2018-04-23   Modified: 2024-01-30  

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