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Etude de l'habitat de la loutre d'Europe (Lutra lutra) en région Auvergne (France) [Texte imprimé] : relations entre le régime alimentaire et la dynamique de composés essentiels et d'éléments toxiques

Abstract : The habitat and diet of the otter (Lutra lutra) were studied in the Auvergne region, in relation to the dynamics of essential fatty acids and toxic elements. The movement of natural recolonization of the species leads to frequent aquatic environments degraded and not degraded. Diet dominated by fish, is more diversified in its last. The prey of aquatic origin are a major source of essential fatty acids in tissues of otters, and the ratio DHA / LA is a tool for assessing the origin of terrestrial and aquatic prey. Organochlorine pesticides, PCBs, trace elements and anticoagulants were detected in spraints, tissues, and the main prey of the otter. The concentrations of these elements in tissues, increase along a gradient downstream upstream, within the watershed, due to the transfer of toxic compounds from prey to predator
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https://tel.archives-ouvertes.fr/tel-00717841
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Submitted on : Friday, July 13, 2012 - 5:33:45 PM
Last modification on : Tuesday, February 23, 2021 - 11:28:02 AM

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Charles Lemarchand. Etude de l'habitat de la loutre d'Europe (Lutra lutra) en région Auvergne (France) [Texte imprimé] : relations entre le régime alimentaire et la dynamique de composés essentiels et d'éléments toxiques. Biologie animale. Université Blaise Pascal - Clermont-Ferrand II, 2007. Français. ⟨NNT : 2007CLF21746⟩. ⟨tel-00717841⟩

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