Seedling Production from the Hatchery-Reared Puffer Fish, Takifugu rubripes: An Attempt to Establish a Closed Life-cycle Culture System
1993 Volume 41 Issue 3 Pages 367-371
Details
1993 Volume 41 Issue 3 Pages 367-371
Seedling production from the hatchery-reared puffer fish, Takifugu rubripes was conducted in order to establish the possibility of a closed life-cycle culture system for puffer fish. Male and female breeders used in the experiment were cultured from the larval to the adult stage between 1988 and 1992 in our pen culture farm at Azuma-cho, Kagoshima Prefecture. Body weight of matured fish ranged from 1.8 to 2.45 kg on April 1992. The gravid females were transferred to the hatchery tank, and then hormone Puberogen (Sankyozoki Co., 1, 000 IU/fish on April 7, and 1, 500 IU/fish on April 10) was injected. Eight days after the injection, five fishes spawned a total of 136, 000 eggs. After that, 45, 700 juvenile were obtained.
The hatching rate was 33.4 %. Out of the larvae produced, 3, 300 young puffer fishes were obtained from the second breeding generation. Their current average body weight on January 1993 was 193 g.
