エゾアワビの成長に対する食物としてのワカメ湯通し茎状部の評価 Dietary Evaluation of the Boiled Stipe of Wakame, Undaria pinnatifida, for Growth of the Ezo Abalone, Haliotis discus hannai

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Author(s)

    • 川島 亜希子 KAWASHIMA Akiko
    • Laboratory of Applied Aquatic Botany, Graduate School of Agricultural Science, Tohoku University Laboratory of Applied Aquatic Botany, Graduate School of Agricultural Science, Tohoku University
    • 吾妻 行雄 AGATSUMA Yukio
    • Laboratory of Applied Aquatic Botany, Graduate School of Agricultural Science, Tohoku University Laboratory of Applied Aquatic Botany, Graduate School of Agricultural Science, Tohoku University
    • 谷口 和也 TANIGUCHI Kazuya
    • Laboratory of Applied Aquatic Botany, Graduate School of Agricultural Science, Tohoku University Laboratory of Applied Aquatic Botany, Graduate School of Agricultural Science, Tohoku University

Abstract

ワカメ養殖において大量の廃棄物となっている湯通し茎状部がエゾアワビの食物となるか否かを明らかにするため, 生鮮ワカメの葉状部, 茎状部, 胞子葉部およびマコンブを与えて, エゾアワビの成長を比較した。湯通し茎状部を与えたエゾアワビ稚貝は, 生鮮葉状部に次いで良く成長した。エゾアワビ稚貝は, 湯通しによって炭水化物とタンパク質含量が著しく低下した茎状部を他の食物より多量に摂食することによって成長を維持した。成貝は, 生殖巣の発達は認められなかったが, 稚貝と同様に湯通し茎状部を多量に摂食した。湯通し茎状部はエゾアワビの移植用種苗の中間育成あるいは養殖用の食物として活用できることが明らかになった。

In Japan, the boiled stipes of wakame, <I>Undaria pinnatifida</I>, cultured are normally dumped in large quantity. To evaluate the value of boiled stipes as food for the ezo abalone, <I>Haliotis discus hannai</I>, we studied the growth of juveniles and adults fed the boiled stipes compared with fresh blades, stipes, or sporophylls of wakame or konbu in a rearing experiment. The juveniles fed boiled stipes grew well, followed by those fed fresh blades, because boiled stipes were most abundantly eaten, although the carbohydrate and crude protein contents were less in the boiled stipes than in the other parts. Boiled stipes were abundantly taken by the adults, while no gonadal enhancement of them was found. These results strongly support the utilization of stipes as food for the juvenile abalone cultured until reseeding to the field or in aquaculture.

Journal

  • Aquaculture Science

    Aquaculture Science 50(1), 97-102, 2002-03-25

    Japanese Society for Aquaculture Science

References:  9

Codes

  • NII Article ID (NAID)
    10008020332
  • NII NACSIS-CAT ID (NCID)
    AN00124667
  • Text Lang
    ENG
  • Article Type
    ART
  • ISSN
    03714217
  • NDL Article ID
    6116004
  • NDL Source Classification
    ZR26(科学技術--農林水産--水産)
  • NDL Call No.
    Z18-761
  • Data Source
    CJP  NDL  J-STAGE  JASI 
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