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Ranking the priority for invasive crayfish control based on phenotypic and genetic characteristics

Research Project

Project/Area Number 24510324
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Resource conservation science
Research InstitutionKanazawa University (2013-2014)
Niigata University (2012)

Principal Investigator

NISIKAWA Usio  金沢大学, 環日本海域環境研究センター, 准教授 (00391136)

Co-Investigator(Kenkyū-buntansha) KOIZUMI Itsuro  北海道大学, 地球環境科学研究科, 准教授 (50572799)
Project Period (FY) 2012-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2012: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywordsウチダザリガニ / 形態多型 / 行動多型 / 行動シンドローム / 遺伝子型多型 / ミトコンドリアDNA / マイクロサテライトDNA / 遺伝子多型 / 外来ザリガニ / アメリカ合州国
Outline of Final Research Achievements

We studied behavioural, morphological and genetic differences and factors that explain such phenotypic and genetic variations among invasive signal crayfish populations in Japan. A previous microsatellite DNA analysis has indicated that invasive signal crayfish populations in Japan can be classified into three groups (Lake Mayu in Hokkaido Shiga Prefecture, Akashina in Nagano Shiga Prefecture, Tankai in Shiga Prefecture), and newly discovered invasive populations originate from Lake Masyu. Even among invasive populations that originate from Lake Masyu, aggressiveness differed according to the year of invasion or crayfish abundance. From these results we conclude that newly invaded populations that originate from Lake Masyu should be prioritized for crayfish control or eradication.

Report

(4 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • 2012 Research-status Report
  • Research Products

    (2 results)

All 2012

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (1 results)

  • [Journal Article] The signal crayfish is not a single species: cryptic diversity and invasions in the Pacific Northwest range of Pacifastacus leniusculus.2012

    • Author(s)
      Larson ER, Abbott CL, Usio N, Azuma N, Wood KA, Herborg L-M & Olden JD
    • Journal Title

      Freshwater Biology

      Volume: 57 Issue: 9 Pages: 1823-1838

    • DOI

      10.1111/j.1365-2427.2012.02841.x

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Presentation] Home and away: comparison of genetic and morphological variability between native and invasive signal crayfish.2012

    • Author(s)
      Usio N, Azuma N, Larson E, Abbott C, Olden J, Takamura N, Takamura K.
    • Organizer
      The Crustacean Society Summer Meeting / 10th Colloquium Crustacean Decapoda Mediterranea
    • Place of Presentation
      Athens, Greece
    • Related Report
      2012 Research-status Report

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Published: 2013-05-31   Modified: 2019-07-29  

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