GAMAIN, Perrine; GONZALEZ, Patrice; CACHOT, Jérôme; CLERANDEAU, Christelle; MAZZELLA, Nicolas; GOURVES, Pierre Yves; MORIN, Benedicte

doi:10.1016/j.marpolbul.2016.12.018

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GAMAIN, Perrine
Environnements et Paléoenvironnements OCéaniques [EPOC]

GONZALEZ, Patrice

Environnements et Paléoenvironnements OCéaniques [EPOC]

CACHOT, Jérôme

Environnements et Paléoenvironnements OCéaniques [EPOC]

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Marine Pollution Bulletin. 2017-02-01, vol. 115, n° 1-2, p. 201-210

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This study evaluates the combined effects of two contaminants (copper and a herbicide S-metolachlor) and temperature on the early life stages of the Pacific oyster Crasssotrea gigas,which is native to Arcachon Bay (southwest France). The responses of D-larvae, obtained fromwild and cultivated oysters,were investigated for one year during the oyster breeding period at different sampling sites and compared with the response of D-larvae from a commercial hatchery. Embryotoxicity was measured by considering the percentage of abnormal D-shaped larvae. Normal development of embryos occurred only from 22 °C to 26 °C. There were synergistic effects of copper at low and high temperatures. Native oysters appear particularly sensitive to an increase in water temperature, suggesting a future increase in the percentage of larval abnormalities as a result of global climate change. Hatchery oysters represent a good alternative model for studying the effects of both pollutants and climate change stressors.< Leer menos

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Pacific oyster

Copper

Herbicide

Embryotoxicity

Climate change

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Combined effects of temperature and copper and S-metolachlor on embryo-larval development of the Pacific oyster, Crassostrea gigas

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