Changes in Some Properties of Black Sea Bream Released into the Daiô Bay, Hiroshima

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  • Changes in Some Properties of Black Sea Bream Released into the Daio Bay,Hiroshima
  • Changes in Some Properties of Black Sea
  • Changes in Some Properties of Black Sea Bream Released into the Daiô Bay, Hiroshima

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Abstract

In order to evaluate seed quality for release projects, body constituents of artificially-produced black sea bream Acanthopagrus schlegeli were monitored after release. The individually marked fish (42mm in total length) were released into a Daiô Bay of Nino-shima Island, Hiroshima, in August 1993. The hatchery-produced fish which had high lipid reserves lost them abruptly within one month after release. Thereafter, the lipid level became lower than that of wild fish at the 100 th day. Intestinal length of hatchery-produced fish was shorter than that of wild fish, but extended to the same length to wild fish by living in the sea. Activity of the hepatic enzyme glucose-6-phosphate dehydrogenase (EC 1. 1. 1. 49) involved in lipogenesis was higher in hatchery-produced fish but reached the same level as that in wild fish at one month after release. Activity of hepatic 6-phosphogluconate dehydrogenase (EC 1. 1. 1. 44) remained constant during the experimental period. The changes in the body constituents could be helpful in evaluating fish quality in releasing projects.

Journal

  • Fisheries science

    Fisheries science 63 (2), 267-271, 1997

    The Japanese Society of Fisheries Science

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