Data/hora: 15/06/2024 15:21:53

Provedor de dados: | 5
País: | France
Título: | Induction of ovulation and stimulation of spermation by LHRH or an LHRH analog associated or not with pimozide. Effects on some teleost fish.
Autores: | Billard, R; Weil, C; Barnabe, G.
Data: | 1983-12
Ano: | 1983
Palavras-chave: | Salmonidae; Dicentrarchus labrax; Sparidae; Cyprinidae; Teleostei; Pisces; Inhibitors; Sex hormones; Sexual maturity; Spermatogenesis; Ovulation; Induced breeding; Sexual reproduction.
Resumo: | Effectiveness of LHRH and one of its analogs (LHRH-A = D-Ala super(6) ethylamide) on induction of ovulation and stimulation of spermiation is reviewed here. LHRH was also combined with pimozide, an anti-dopaminergic agent, to try to cancel dopamine inhibition of gonatotropin (GtH) release. LHRH-A alone (50 mu g/kg) did not initiate ovulation but only oocyte maturation. When pimozide (10 mg/kg) and LHRH-A (50 mu g/kg) were combined, gonadotropic hormone secretion was significantly increased, causing ovulation and stimulating spermiation. This combination advanced ovulation in trout. Trout egg quality was markedly altered by the pimozide treatment; it remains to be tested in carp. In sea bass, LHRH-A was much more effective than LHRH, and ovulation was obtained at very low doses (0.5 and 1 mu g/kg live weight) with very satisfactory egg quality.
Tipo: | Text
Idioma: | Inglês
Identificador: | http://archimer.ifremer.fr/doc/1983/acte-1218.pdf
Editor: | Actes de colloques. Ifremer. Brest [ACTES COLLOQ. IFREMER.]. 1985
Relação: | http://archimer.ifremer.fr/doc/00000/1218/
Formato: | application/pdf