Present status and distribution of unionid mussels in Yogo-iri irrigation ditch connected to Lake Kasumigaura revealed by dredged sediment

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Other Title
  • 霞ヶ浦に接続する余郷入り導水路におけるイシガイ科二枚貝の生息状況：浚渫土砂からの推定

Abstract

<p>The status and distribution of unionid mussels in Lake Kasumigaura was reported on in 1996. At this time the populations had recently decreased in the lake. In this study, the distribution of unionid mussels was investigated on the surface of dredged sediment in the Yogo-iri irrigation ditch connecting to Lake Kasumigaura. Distribution of Unio douglasiae was localized in a 1,000 m section of study site of the 3,500 m long ditch. In contrast, Anodonta spp. were widely distributed across the study site. Because many unionid mussels were captured in Yogo-iri irrigation ditch, the ditch is assumed to be refugia for the populations of unionid mussels in Lake Kasumigaura. Analyzing mussels on the surface of dredged sediment would be more convenient than using traditional methods to clear the distribution of unionid mussels.</p>

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Details 詳細情報について

  • CRID
    1390001205823429760
  • NII Article ID
    130006200011
  • DOI
    10.20745/izu.8.0_57
  • ISSN
    24242101
    18819559
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
    • Crossref
  • Abstract License Flag
    Disallowed

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