Hormone induced spawning of red snapper, Lutjanus campechanus

Red snapper, Lutjanus campechanus, were induced to ovulate following injections of Human Chorionic Gonadotropin (HCG). Females were injected initially with 1.1 IU/g body weight. When subsequent injections were necessary, 0.55 IU/g of body weight was used. Ovulation occurred between 42 and 56 h following injection. Eggs were wet stripped and fertilized simultaneously with sperm from two males. Initial mitosis was detected 30 min post fertilization. Hatching occurred in 20 h at 27°C.