Induction of Ovulation by HCG Injection in the Tropical Walking Catfish Clarias batrachus Reared under 23-25.DEG.C..

DOI Web Site 2 Citations
  • Zairin Jr. Muhammad
    Department of Fisheries, Faculty of Agriculture, The University of Tokyo
  • Furukawa Kiyoshi
    Department of Fisheries, Faculty of Agriculture, The University of Tokyo
  • Aida Katsumi
    Department of Fisheries, Faculty of Agriculture, The University of Tokyo

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Other Title
  • 水温23～25°Cで飼育した雌walking catfishのHCG投与による排卵誘発
  • 水温23～25℃で飼育した雌walking catfishのHCG投与による排卵誘発〔英文〕
  • スイオン 23 25ドC デ シイクシタ メス walking catfish

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Abstract

A series of trials on induced ovulation were conducted using female walking catfish to examine conditions of maturity under warm water conditions. For this purpose, females were maintained at 23-25°C for along period, either under 12L12D or natural photoperiod. Using 12-37 month-old females, induction of ovulation was achieved with a single injection of HCG (0.2, 0.4, 0.8, 1.6, or or 3.2IU/g BW). In all the trials, HCG treatment succeeded in inducing ovulation at dosages of 0.4IU/g BW or higher. Oocytes larger than 770μm responded to HCG and ovulated. These results indicate that female walking catfish can maintain conditions of maturity for an extended time under warm water conditions, and can respond to HCG irrespective of photoperiod.

Journal

  • NIPPON SUISAN GAKKAISHI

    NIPPON SUISAN GAKKAISHI 58 (9), 1681-1685, 1992

    The Japanese Society of Fisheries Science

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