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	Provedor de dados ArchiMer (2) Autor Cereghino, Regis (2) Kopp, Dorothee (2) Santoul, Frederic (2) Syvaeranta, Jari (2) Crivelli, Alain (1) Cucherousset, Julien (1) Martino, Aurelia (1) Mais... Palavra-chave Ethanol (1) Fin clips (1) Food web (1) Formalin (1) Freezing (1) Introduced species (1) Preservation (1) River (1) Stable isotope analysis (1) Stable isotopes (1) Top predator (1) Mais... Tipo do documento Text (2) Ano 2011 (1) 2010 (1) País France (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Dietary breadth and trophic position of introduced European catfish Silurus glanis in the Tarn River (Garonne River basin), southwest France ArchiMer Syvaeranta, Jari; Cucherousset, Julien; Kopp, Dorothee; Crivelli, Alain; Cereghino, Regis; Santoul, Frederic. Although being a widely introduced and successfully established species, the European catfish Silurus glanis L. (the world’s third largest freshwater fish) remains poorly studied in its introduced areas. Here we studied the trophic ecology of non-native European catfish in a large river system in south-western France using stomach content and stable isotope analyses (SIA). We used fin samples for SIA of catfish and hence tested the validity of using fin tissue as a proxy for muscle in SIA. The mean δ15N and δ13C values analysed from fin tissues did not differ from those analysed from muscle tissue and reflected strong and consistent relationships (r2 = 0.95 for carbon and r2 = 0.98 for nitrogen). The δ15N values varied almost 5‰ among the analysed catfish... Tipo: Text Palavras-chave: Stable isotopes; Introduced species; Top predator; River; Food web; Fin clips. Ano: 2010 URL: http://archimer.ifremer.fr/doc/00168/27896/26159.pdf Freezing and chemical preservatives alter the stable isotope values of carbon and nitrogen of the Asiatic clam (Corbicula fluminea) ArchiMer Syvaeranta, Jari; Martino, Aurelia; Kopp, Dorothee; Cereghino, Regis; Santoul, Frederic. We tested the impacts of most common sample preservation methods used for aquatic sample materials on the stable isotope ratios of carbon and nitrogen in clams, a typical baseline indicator organism for many aquatic food web studies utilising stable isotope analysis (SIA). In addition to common chemical preservatives ethanol and formalin, we also assessed the potential impacts of freezing on delta C-13 and delta N-15 values and compared the preserved samples against freshly dried and analysed samples. All preservation methods, including freezing, had significant impacts on delta C-13 and delta N-15 values and the effects in general were greater on the carbon isotope values (1.3-2.2aEuro degrees difference) than on the nitrogen isotope values (0.9-1.0aEuro... Tipo: Text Palavras-chave: Formalin; Freezing; Ethanol; Preservation; Stable isotope analysis. Ano: 2011 URL: http://archimer.ifremer.fr/doc/00021/13192/10271.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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