異なる塩分で培養したシオミズツボワムシのヒラメ仔魚に対する餌料価値

DOI 日本農学文献記事索引 Web Site 参考文献51件
  • 友田 努
    水産総合研究センター能登島栽培漁業センター
  • 團 重樹
    水産総合研究センター玉野栽培漁業センター
  • 芦立 昌一
    水産総合研究センター玉野栽培漁業センター
  • 小磯 雅彦
    水産総合研究センター能登島栽培漁業センター
  • 榮 健次
    水産総合研究センター能登島栽培漁業センター

書誌事項

タイトル別名
  • Dietary Value of Marine Rotifer <I>Brachionus plicatilis</I> Cultured at Different Salinities for Larval Japanese Flounder <I>Paralichthys olivaceus</I>
  • コトナル エンブン デ バイヨウ シタ シオミズツボワムシ ノ ヒラメシギョ ニ タイスル ジリョウ カチ

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抄録

We assessed the dietary value of rotifers cultured at different salinities for the larval growth and survival of Japanese flounder Paralichthys olivaceus. Two groups of rotifers were prepared at two different salinities (26 and 32 psu) by a 2-day batch-culture method. The two groups were enriched under the same conditions of 18°C temperature and 26 psu salinity. Enriched rotifers were fed to the flounder larvae until 9 days post-hatch (dph). Despite the almost equal daily growth rates and egg ratios in the two rotifer groups, the 26-psu rotifers had lower ratios of immature individuals. When the rotifers were enriched for 6 to 18 h, the 26-psu rotifers had significantly higher increase of essential fatty acid than the 32-psu rotifers. No significant intergroup difference was observed in larval flounder survival at 10 dph. Larval flounder fed 26-psu rotifers showed faster growth and better morphological development than those fed 32-psu rotifers. These effects appeared to be supported by our findings that the DHA and n-3 HUFA contents in flounder larvae fed 26-psu rotifers were significantly higher than those in larvae fed 32-psu rotifers. Salinity of rotifer mass culture had a large influence on larviculture of Japanese flounder.

収録刊行物

  • 水産増殖

    水産増殖 59 (1), 41-50, 2011

    日本水産増殖学会

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