Data/hora: 17/06/2024 16:32:08

Provedor de dados: | 5
País: | France
Título: | Slow-release GnRHa treatment prevented atresia during vitellogenesis and induced ovulation of captive wreckfish (Polyprion americanus)
Autores: | Fauvel, Christian; Suquet, Marc; Severe, Armelle; Mylonas, Constantinos C.; Papandroulakis, Nikos.
Data: | 2008-07
Ano: | 2008
Palavras-chave: | Aquaculture; Polyprion americanus; Wreckfish; GnRHa; Gametogenesis.
Resumo: | The potential of wreckfish (Polyprion americanus) to breed in captivity was examined. Ovarian activity varied seasonally, with vitellogenesis beginning in November and ending in May. Slow-release implant with gonadotropin-releasing hormone agonist (GnRHa) prevented atresia, and both GnRHa injections or implants at the end of vitellogenesis triggered ovulation after 7 days. Spontaneous spawning was obtained only in one female, and the few eggs produced were of poor viability. Manual stripping and artificial fertilization produced viable gametes and embryos. Therefore, present captivity conditions inhibited final oocyte maturation (FOM) and spawning, but not vitellogenesis and spermatogenesis. GnRHa treatments stimulate FOM and ovulation of viable eggs.
Tipo: | Text
Idioma: | Inglês
Identificador: | http://archimer.ifremer.fr/doc/2008/publication-6554.pdf
Editor: | Société Française d'Ichtyologie
Relação: | http://archimer.ifremer.fr/doc/00000/6554/
Formato: | application/pdf
Fonte: | Cybium, Revue Internationale d'Ichtyologie (0399-0974) (Société Française d'Ichtyologie), 2008-07 , Vol. 32 , N. 2 , P. 191
Fonte: | 2008 Société Française d'Ichtyologie