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Theses

Rôles de différents facteurs écologiques sur le transfert trophique des éléments traces chez des téléostéens marins

Abstract : Teleost fish accumulate metals through different pathways and It is now well established that food plays a major role in this accumulation. Nevertheless, there is still lack of knowledge on the variability of metal trophic transfer in fish in connection with their life context. The present doctoral research aims at characterizing the influence of biological and environmental factors on the assimilation efficiency (AE) of essential and non-essential metals in fish. AE determination during a series of experiment under controlled condition reveals that biological factors, in particular the type of food ingested, play a predominant role in metal AE in fish while environmental factors (pH, temperature, salinity ...) seem to have a limited influence. All the work carried out during this thesis allows a better understanding of the trophic transfer of metals in fish and, thus bring new knowledge in the field of fish nutrition and ecotoxicology.
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Submitted on : Thursday, March 29, 2018 - 5:04:32 PM
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Simon Pouil. Rôles de différents facteurs écologiques sur le transfert trophique des éléments traces chez des téléostéens marins. Ecotoxicologie. Université de La Rochelle, 2017. Français. ⟨NNT : 2017LAROS019⟩. ⟨tel-01753817⟩

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