Growth and Survival of the Ark Shell <I>Scapharca kagoshimensis</I> Cultured in a Semi-enclosed Lagoon, Lake Nakaumi, Southwest Japan

  • Suzuki Hideyuki
    Graduate School of Life and Environmental Science, Shimane University
  • Yamaguchi Keiko
    Faculity of Life and Environmental Science, Shimane University
  • Seto Koji
    Research Center for Coastal Lagoon Environments, Shimane University

Bibliographic Information

Other Title
  • 閉鎖性の高い中海で垂下養殖されたサルボウガイの成長と生残
  • ヘイサセイ ノ タカイ ナカノウミ デ スイカ ヨウショク サレタ サルボウガイ ノ セイチョウ ト セイザン

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Abstract

Growth and survival of the ark shell Scapharca kagoshimensis cultured within net-bags were examined under various environmental conditions in Lake Nakaumi. In summer, ark shells cultured in the surface layer of water showed higher growth than those in the bottom layer of water. In winter, ark shells cultured in the bottom layer showed higher growth than those in the surface layer. The growth and survival of ark shells were mainly influenced by dissolved oxygen in summer, while in winter, their growth was influenced by water temperature. These results indicate that hanging culture of the ark shells is possible using net-bags without bottom sediment, and also suggest that management of culturing depth is efficient for their growth through the year.

Journal

  • Aquaculture Science

    Aquaculture Science 59 (1), 89-99, 2011

    Japanese Society for Aquaculture Science

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