館山湾におけるシロギス, <I>Sillago japonica</I>の繁殖

DOI 日本農学文献記事索引 Web Site 被引用文献6件 参考文献13件
  • SULISTIONO
    Tokyo University of Fisheries, Dept. of Aquatic Biosciences
  • 渡邊 精一
    Tokyo University of Fisheries, Dept. of Aquatic Biosciences
  • 横田 賢史
    Tokyo University of Fisheries, Dept. of Aquatic Biosciences

書誌事項

タイトル別名
  • Reproduction of the Japanese Whiting, Sillago japonica, in Tateyama Bay.

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抄録

The maturity stages of gonads and the fecundity of the Japanese whiting, Sillago japonica, were investigated from October 1993 to January 1995 in Tateyama Bay using samples collected by encircling trammel net and hand line. Sex ratio (M/F) of the fish varied from 0.68 to 1.67. Both male and female had a peak CF (condition factor) value in June (0.86 in female and 0.83 in male) . The peak value for GSI (gonad somatic index) was observed in August (4.19 in female and 1.62 in male) . The maturing and mature stages of gonads were observed from June to October, whereas the immature gonad was found during November to May. Fecundity of S. japonica varied from 13, 600 to 68, 900. The GSI, CF, gonad maturity stages and size frequency of the ova-diameter indicated that the spawning period of the S. japonica was also quite long.

収録刊行物

  • 水産増殖

    水産増殖 47 (2), 209-214, 1999

    日本水産増殖学会

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