N. Zonneveld, Rustidja, W.J.A.R. Viveen, Wayan Mudana
Asian catfish (Clarias batrachus) fingerlings, obtained from local farmers in East Java, Indonesia and kept under hatchery conditions for a period of at least 3 months, were injected with carp pituitary suspension (CP) in order to induce oocyte maturation and ovulation. The dosages used were 3, 6 and 9 mg CP/kg body weight (BW), and stripping times were 11, 14, and 17 h after treatment at a water temperature of 25°C. Replicate samples of eggs were fertilized and incubated. The average working fecundity (number of normal larvae per 100 g female) was highest at a stripping time of 17 h and dosages of 6 and 9 mg CP/kg. © 1988.
Department of Fish Culture and Fisheries, Agricultural University, 6700 AH Wageningen, P.O. Box 338, Netherlands; Faculty of Fisheries, Brawijaya University, Malang, P.O. Box 176, Indonesia
