舞鶴湾におけるアサリの分布の特徴

DOI 日本農学文献記事索引 Web Site 被引用文献5件 参考文献21件

書誌事項

タイトル別名
  • Some Distributional Aspects of Manila Clam, Ruditapes philippinarum, in Maizuru Bay.
  • マイズルワン ニ オケル アサリ ノ ブンプ ノ トクチョウ

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抄録

Early young (less than 2mm in shell length), late young (2mm or more and less than 25mm in shell length) and adult (25mm or more in shell length) of Manila clam, Ruditapes philippinarum, were collected from depths of 0 to 5m Maizuru Bay (the western part of Wakasa Bay), Japan Sea, in November 1992, September and November 1993.<BR>The distribution of early young clams ranges from depths of 0 to 5m, and of late young clams from depths of 0 to 3m. Adult clams distribute around the depth of 1m. Thus, the distribution pattern of Manila clam in Maizuru Bay shifts to the shallower depths in order of developmental stage.<BR>Manila clams show high densities at depths of 1 and 2m in September 1993. In November 1993, the density of the clams at depth of 2m decreases, though it remaines high value at depth of 1m. These facts imply that movements and/or biolysis of the clams occurre at depth of 2m in the period from September to November 1993.<BR>Early young clams mainly distribute from depths of 0.5 to 1.0m. The main distribution of early young clams matches with that of adult clams. On the other hand, there is a differrence in main distribution between the early young and late young clams (depths of 1.0 to 1.5m) .

収録刊行物

  • 水産増殖

    水産増殖 44 (2), 133-139, 1996

    日本水産増殖学会

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