Alien bagrid catfish <i>Tachysurus fulvidraco</i>, its life history and fishery damages it caused in Lake Inba, Japan

DOI
  • Ishida Nana
    Laboratoly of Geographical Ecology, School of Science, Toho University Laboratoly of Fisheries Management Economics, Graduate School of Fisheries Sciences, Hokkaido University
  • Hasegawa Masami
    Laboratoly of Geographical Ecology, School of Science, Toho University
  • Ozaki Masumi
    Laboratoly of Geographical Ecology, School of Science, Toho University Chiba Prefectural Fisheries Research Center, Fresh-water Station

Bibliographic Information

Other Title
  • 印旛沼における外来種コウライギギの生態と漁業被害の現状

Abstract

<p>The bagrid catfish Tachysurus fulvidraco, native to continental East Asia, was first recorded in Japan in 2008, and was legally designated as an invasive alien species in 2016 due to serious concerns about negative impacts on wetland ecosystems, economy, and regional societies. Therefore, we investigated the habitat status and fisheries damage related to this invasive species in Lake Inba. In this study, analysis of body size composition and gonad condition for the fish sampled from May to December in 2018 indicated that the breeding season is from at least May to July． Most of T. fulvidraco captured by the fisherman were the newly recruited 1st year juvenile fish, which were found to contaminate the local fisheries harvest. Based on a questionnaire survey, we revealed that fisherman and persons engaging in fishery processing industries received injuries caused by the T. fulvidraco sharp pectoral spine．In addition, juveniles of T. fulvidraco contaminated fishery processing machinery which increased sorting work.</p>

Journal

Keywords

Details 詳細情報について

  • CRID
    1390003825206856320
  • NII Article ID
    130007889435
  • DOI
    10.20745/izu.14.0_91
  • ISSN
    24242101
    18819559
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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