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Oocyte and embryo quality in Crassostrea gigas (Portuguese strain) during a spawning period in Algarve, South Portugal ArchiMer
Massapina, Clara; Joaquim, Sandra; Matias, Domitilia; Devauchelle, Nicole.
Egg quality is one of the most important factors determining larval viability. The study of oocytes released by 'wild' broodstock will contribute to the definition of quality criteria applied to hatcheries as well as being an indicator of the oyster reproduction potential and aquaculture ongrowing systems. The aim of this study was to determine the relationship between condition of Crassostrea gigas spp. angulata (Portuguese strain) from 'wild' broodstock (condition index, gonadal maturity and number of oocyte released), oocyte biochemistry and hatching rate of eggs during the spring/summer of 1995. Stages of gonadal maturity and condition index indicated that natural spawning of this species occurred between April and August with the highest spawning...
Tipo: Text Palavras-chave: Crassostrea gigas; Portuguese strain; Condition index; Gonadal maturity; Oocyte biochemical composition; Larval viability.
Ano: 1999 URL: http://archimer.ifremer.fr/doc/00043/15442/12814.pdf
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