Artigo
Induced ovulation and rearing of the pacu (Colossoma mitrei)
Fecha
1981-08-01Registro en:
Aquaculture, v. 25, n. 2-3, p. 275-279, 1981.
0044-8486
10.1016/0044-8486(81)90189-7
2-s2.0-0019745951
Autor
Universidade Estadual Paulista (Unesp)
Resource Services Branch
Resumen
A method is described for spawning the economically important Brazilian characin species Colossoma mitrei. Ovulation was induced using a priming injection of 0.2 mg/kg partially purified gonadotropin SG-G100 followed at 8 h by injecting an extract of 20 mg/kg acetone-dried chum salmon pituitary powder. Spermiation was induced in the male using a similar primer followed by 14 mg/kg acetone-dried chum salmon pituitary powder. Eggs were successfully fertilized and incubated at 25-26°C. Hatching occurred at 20.5 h and a survival of 10% to fingerling size was achieved. © 1981.