Data/hora: 10/06/2024 03:44:55

Provedor de dados: | Institutional Archive of Ifreme (ArchiMer)
País: | France
Título: | Pollution et taux d'aneuploïdie chez l'huître creuse Crassostrea gigas: étude expérimentale sur une population en milieu contrôlé
Autores: | Bouilly, Karine.
Data: | 2001
Ano: | 2001
Palavras-chave: | Huître creuse; Crassostrea gigas; Aneuploïdie; Facteur environnemental; Atrazine; Aneuploidy; Pacific oysters; Crassostrea gigas; Environmental factor; Atrazine.
Resumo: | Aneuploidy has previously been reported in wild and cultivated Pacific oysters, Crassostrea gigas, and it has been shown to be negatively correlated with growth. This is especially important since high variability of growth rate is one of the major problems in the aquacultural production of this species. The existence of an environmental factor (such as atrazine contamination) with an effect on aneuploidy level was first investigated through the study of a population of Crassostrea gigas subjected to different concentrations of atrazine. The treatments applied represent peak values found in the environment (0,01 mg/l) plus a value ten times higher (0,1 mg/l). Our results have shown that although atrazine did not have an effect on the mortality of adult oysters, significant di ffe rences in aneuploidy rate were observed between the lots exposed to the different concentrations of atrazine and the controls with none. The offspring of oysters that had been exposed to the different concentrations of atrazine did not show differences in larval growth. However, the presence of atrazine in the environment of the parents did have an effect on the hatching rate. Our results have therefore shown an environmental cause for the aneuploidy in the Pacific oyster Crassostrea gigas for the first time.
Tipo: | Text
Idioma: | Francês

Identificador:

http://archimer.ifremer.fr/doc/00428/53932/55060.pdf

http://archimer.ifremer.fr/doc/00428/53932/

Formato: | application/pdf

Fonte:

2001 Ifremer, Université de La Rochelle

info:eu-repo/semantics/openAccess

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