Invasion status and reproduction of smallmouth bass <i>Micropterus dolomieu</i> in the Hinuma River upstream of Lake Hinuma, a Ramsar site in eastern Japan

DOI
  • Kimura Masashi
    Water Environment Field Station, Global and Local Environment Co-creation Institute, Ibaraki University
  • Yamaguchi Masaaki
    Water Environment Field Station, Global and Local Environment Co-creation Institute, Ibaraki University
  • Omori Kensaku
    Ibaraki Prefectural Fisheries Research Institute
  • Yamazaki Kazuya
    Ibaraki Prefectural Fisheries Research Institute, Freshwater Fisheries Branch
  • Kaneko Seiya
    Wetlands International Japan
  • Kanou Kouki
    Water Environment Field Station, Global and Local Environment Co-creation Institute, Ibaraki University

Bibliographic Information

Other Title
  • ラムサール条約登録湿地「涸沼」に流入する涸沼川における コクチバスの侵入と再生産

Abstract

<p>Invasion status of an invasive alien species, Micropterus dolomieu, was ex- amined in the main stream and its tributary (Iida River and Lake Kasama) of the Hinuma River system upstream of Lake Hinuma, a Ramser site in Ibaraki Prefecture, eastern Japan. A total of 228 individuals (6.3–295 mm in body length) including adult and larvae of this species were collected at seven sites immediately downstream of the tributary from June to September in both 2019 and 2020. A spawning nest with larvae and an adult was found at one site in the main river in June 2019. These results suggest that Micropterus dolomieu have expanded their distribution by continuing to reproduce within the river system.</p>

Journal

Keywords

Details 詳細情報について

  • CRID
    1390851485574539776
  • NII Article ID
    130008059748
  • DOI
    10.20745/izu.15.0_87
  • ISSN
    24242101
    18819559
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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