Data/hora: 10/06/2024 12:23:57

Provedor de dados: | Institutional Archive of Ifreme (ArchiMer)
País: | France
Título: | Motility characteristics of spermatozoa in cod (Gadus morhua) and hake (Merluccius merluccius)
Autores: | Cosson, Jacky; Groison, Anne-laure; Suquet, Marc; Fauvel, Christian.
Data: | 2008-07
Ano: | 2008
Palavras-chave: | Osmotic pressure; Sperm motility; Spermatozoa; Hake; Cod.
Resumo: | As in many marine fish, motility is triggered by osmotic pressure (OP) in cod and hake spermatozoa and motility ranges several minutes with a high velocity (above 50 mu m/s) period restricted to 100 s. A decrease in the flagellar beat frequency (BF) is partly responsible of this briefness. Detailed observations of the flagella during the motility period showed: 1) sea water provokes OP damages (blebs) which impair the correct wave propagation 2) waves become restricted to the proximal flagellum and tip becomes devoid of wave 3) the wave amplitude decreases. The combination of these factors drastically limits to the earliest period of motility the ability for spermatozoa to efficiently progress towards egg for fertilization.
Tipo: | Text
Idioma: | Inglês
Identificador: | http://archimer.ifremer.fr/doc/2008/publication-6552.pdf
Editor: | Société Française d'Ichtyologie
Relação: | http://archimer.ifremer.fr/doc/00000/6552/
Formato: | application/pdf
Fonte: | Cybium, Revue Internationale d'Ichtyologie (0399-0974) (Société Française d'Ichtyologie), 2008-07 , Vol. 32 , N. 2 , P. 176-177
Fonte: | 2008 Société Française d'Ichtyologie