マダイ仔魚の内部栄養から外部栄養への転換

DOI 日本農学文献記事索引 Web Site 被引用文献3件 参考文献30件

書誌事項

タイトル別名
  • Transition from Endogenous to Exogenous Nutritional Sources in Larval Red Sea Bream, Pagrus major.
  • マダイシギョ ノ ナイブ エイヨウ カラ ガイブ エイヨウ エ ノ テンカン

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抄録

Early growth and morphological development, yolk and oil globule absorption, and initial feeding were studied in laboratory-reared red sea bream, Pagrus major. Based on energy transition and morphological development, the nutritional transition process was divided into four phases as follows: 1) primordial phase (endogenous) : from hatching to ca. 20 hours after hatching (HAH), 2.1-2.9 mm in total length (TL); 2) organogenesis phase (endogenous): to ca. 20-90 HAH, 2.9-3.4 mm TL; 3) early feeding (mixed feeding to exogenous) : to ca. 90-180 HAH, 3.4-4.1 mm TL; 4) intensified feeding (exogenous): beyond 180 HAH, 4.1 mm TL. In comparison with early stage features of other marine fishes, red sea bream larvae have a relatively short mixed-feeding period, which is disadvantageous for survival. However, a high rate of feeding at exhaustion of endogenous nutrition, a reduced time from initial feeding to 100% feeding, and large larval size at the onset of feeding are considered advantageous features for supporting the nutritional requirements of larvae, allowing a smooth transition from endogenous nutrition to exogenous food sources under rearing conditions.

収録刊行物

  • 水産増殖

    水産増殖 49 (3), 323-328, 2001

    日本水産増殖学会

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