Data/hora: 05/06/2024 05:32:00

Biblioteca(s): | Embrapa Caprinos e Ovinos.
Data corrente: | 01/08/1992
Data da última atualização: | 25/07/2023
Autoria: | COURTENS, J. L.; NUNES, J. F.; CORTEEL, J. M.
Título: | Induction of the acrosome reaction in the spermatozoa of the goat by secretions of the male accessory glands and milk.
Ano de publicação: | 1984
Fonte/Imprenta: | Gamete Research, v. 9, n. 3, p. 287-302, 1984.
DOI: | 10.1002/mrd.1120090306
Idioma: | Inglês
Conteúdo: | Abstract: The balancing effects of bulbourethral gland secretion (BUS) and of seminal vesicle secretion (SVS) on goat semen quality were previously demonstrated. In the present study, electron microscope observations revealed a high frequency of spermatozoa with a reacted acrosome among spermatozoa from cauda epididymis exposed to BUS in the presence of milk. This frequency was significantly reduced when SVS had been added either before or after BUS. No reacted acrosome was observed in the absence of milk. All mount spermatozoa were incubated with milk or SVS or BUS or combinations of the three materials labeled with colloidal gold. SVS attached specifically on the plasma membrane covering the anterior part of the acrosome, whereas BUS spread all over the sperm head. Milk attached on the anterior half of the sperm head only when BUS was present in the sperm environment. It is concluded that BUS plays an active role in the induction of the acrosome reaction in the presence of milk and that SVS counteracts this role.
Palavras-Chave: | Goat; Male genital system; Reacao acrossomica; Scrosome reaction; Secrecao vesicular seminal; Seminal vesicular secretion; Vesicular glands.
Thesagro: | Caprino; Fisiologia; Sêmen.
Thesaurus Nal: | Acrosome reaction; Artiodactyla; Fertilization (reproduction); Goats; Secretion; Seminal vesicles; Spermatozoa; Ultrastructure.
Categoria do assunto: | K Ciência Florestal e Produtos de Origem Vegetal
Registro original: | Embrapa Caprinos e Ovinos (CNPC)
Exemplares: | CNPC - (6374-1) - ADD - AP - DD -  -  -  - DIS