養成ブリ2歳魚に対するHCG投与の排卵誘導効果 [in Japanese] Effects of HCG Injection on Oocyte Maturation and Ovulation in Cultured Two-year-old Yellowtail, Seriola quinqueradiata [in Japanese]
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In the present study, induction of maturation and ovulation and subsequent artificial insemination were tried in the cultured two-year-old brood stock of yellowtail, <I>Seriola quinqueradiata</I> to acquire fertilized eggs from young fish. After confirming the yolk accumulation by monitoring oocyte diameter through ovarian biopsy, fish with oocyte sizes between 700 and 740μm.....were selected. A single injection of HCG (500 IU/kg BW) could induce oocyte maturation and ovulation after 48 hours in all the fish except one. Enough volume (212, 000 eggs/fish) of floating eggs was obtained by the artificial insemination performed just after ovulation.
- Aquaculture Science
Aquaculture Science 50(2), 235-236, 2002-06-20
Japanese Society for Aquaculture Science