| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Biological characteristics of sperm in European flat oyster ( Ostrea edulis )
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| Autores: |
Suquet, Marc
Pouvreau, Stephane
Queau, Isabelle
Boulais, Myrina
Le Grand, Jacqueline
Ratiskol, Dominique
Cosson, Jacky
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| Data: |
2018-08
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| Ano: |
2018
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| Palavras-chave: |
Oyster
Ostrea edulis
Brooding species
Sperm
Spermatozeugmata
Endangered species
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| 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.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
https://archimer.ifremer.fr/doc/00454/56539/58245.pdf
DOI:10.1051/alr/2018008
https://archimer.ifremer.fr/doc/00454/56539/
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| Editor: |
Edp Sciences S A
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| Formato: |
application/pdf
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| Fonte: |
Aquatic Living Resources (0990-7440) (Edp Sciences S A), 2018-08 , Vol. 31 , P. 20 (7p.)
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| Direitos: |
EDP Sciences 2018
info:eu-repo/semantics/openAccess
restricted use
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