Data/hora: 04/06/2024 03:34:56

Provedor de dados: | 5
País: | France
Título: | Biological characteristics of sperm in European flat oyster (     Ostrea edulis     )
Autores: | Suquet, Marc; Pouvreau, Stephane; Queau, Isabelle; Boulais, Myrina; Le Grand, Jacqueline; Ratiskol, Dominique; Cosson, Jacky.
Data: | 2018-08
Ano: | 2018
Palavras-chave: | Oyster; Ostrea edulis; Brooding species; Sperm; Spermatozeugmata; Endangered species.
Resumo: | n brooding mollusc species that incubate larvae before their release in seawater, the biology of gametes remains poorly explored. The present study describes some biological characteristics of sperm of the European flat oyster, a native species that has been over-exploited in the past and is nowadays classified as an endangered species in Europe. Flat oysters were collected by divers in the Rade de Brest (Finistère, France), during its natural reproduction period. Gonadal pH is acidic (6.31 ± 0.10). Spermatozoa are clustered in spermatozeugmata, an acellular structure in which the sperm heads are embedded. After their transfer in seawater, spermatozeugmata have a mean diameter of 64 ± 3 μm and they release free spermatozoa for a mean duration of 21 ± 3 min. Immediately after their release, the mean percentage of motile spermatozoa was 48.5 ± 12.6%. At 10 min after dilution in seawater, movement of spermatozoa was no more observed. Biological characteristics of European flat oyster sperm are compared to those observed in the Pacific oyster, regarding the unique reproductive behaviour of the former species and the role of spermatozoa transfer played by spermatozeugmata. The present results aim to improve the knowledge of reproduction and natural recruitment processes, support conservation and restoration measures and favour the establishment of management protocols of gametes and larvae in this endangered species.
Tipo: | Text
Idioma: | Inglês

Identificador:

https://archimer.ifremer.fr/doc/00454/56539/58245.pdf

DOI:10.1051/alr/2018008

https://archimer.ifremer.fr/doc/00454/56539/

Editor: | Edp Sciences S A
Formato: | application/pdf
Fonte: | Aquatic Living Resources (0990-7440) (Edp Sciences S A), 2018-08 , Vol. 31 , P. 20 (7p.)

Fonte:

EDP Sciences 2018

info:eu-repo/semantics/openAccess

restricted use