クロソイ幼魚の温度反応 Temperature Responses of Young Schlegel's Black Rockfish Sebastes schlegeli

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Studies were conducted to clarify the temperature preference and tolerance, and the effects of temperature on the growth of young Schlegel's black rockfish <i>Sebastes schlegeli</i>. A horizontal temperature gradient tank was used for the temperature preference test. The preferred temperature of the fish acclimated to 15-28°C ranged 17.8-22.8°C, with no clear dependence on the acclimation temperature. The final preferendum was estimated to be about 20.5°C. The upper and lower lethal temperatures of the fish exposed for 72h to eight or nine constant test temperatures ranged 28.1-30.5°C and 2.0-9.5°C, respectively. The critical thermal maximum and minimum ranged respectively 31.2-34.6°C and 1.3-4.9°C. The ultimate upper lethal temperature, which could not be exceeded with elevating acclimation temperature, was 30.8°C. In a rearing experiment, where the fish were fed <i>Euphausia pacifica</i> to satiation for 21 days at seven constant temperatures between 12 and 30°C, the highest daily feeding rate, daily growth rate and food conversion efficiency of the fish were found at 25°C, 22°C and 20°C, respectively.<br>The final preferendum was thus found close to the temperatures for the highest growth rate and food conversion efficiency.

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  • 日本水産学会誌  

    日本水産学会誌 63(3), 317-325, 1997-05-15 

    日本水産學會

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各種コード

  • NII論文ID(NAID)
    10004850991
  • NII書誌ID(NCID)
    AN00193422
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    00215392
  • NDL 記事登録ID
    4217668
  • NDL 雑誌分類
    ZR26(科学技術--農林水産--水産)
  • NDL 請求記号
    Z18-345
  • データ提供元
    CJP書誌  CJP引用  NDL  IR  J-STAGE 
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