Publications by authors named "Killian Guyomard"
Pesticides threat marine organisms worldwide. Among them, the Pacific oyster is a bivalve mollusc model in marine ecotoxicology. A large body of literature already stated on the multiple-scale effects pesticides can trigger in the Pacific oyster, throughout its life cycle and in a delayed manner.
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- Marine organisms, like the Pacific oyster, are adversely affected by pesticides in coastal waters, with significant research showing the impacts of these chemicals on marine life.
- Recent studies indicate that pesticides can cause epigenetic changes, particularly in DNA methylation, which can influence not only the exposed generation but also future generations.
- Findings revealed that oysters from pesticide-exposed parents faced decreased metamorphosis and survival rates, suggesting that chronic pesticide exposure has lasting effects on marine organisms beyond individual development.
Early life stages are crucial for organism development, especially for those displaying external fertilization, whose gametes and early stages face environmental stressors such as xenobiotics. The pacific oyster, Crassostrea gigas, is considered a model species in ecotoxicology because of its ecological characteristics (benthic, sessile, filter feeding). So far studies have investigated the impact of xenobiotics at embryotoxic, genotoxic and physiological endpoints, sometimes at the multigenerational scale, highlighting the role of epigenetic mechanisms in transmitting alterations induced by exposure to single xenobiotics.
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