Data/hora: 11/06/2024 08:19:42

Provedor de dados: 	5	
País: 	France	
Título: 	Suivi annuel de l'activité catalase chez des moules et des palourdes originaires de la lagune de Bizerte	
Autores: 	Dellali, M; Romeo, M; Aissa, P.	
Data: 	2001-05	
Ano: 	2001	
Palavras-chave: 	Biomarqueur; Catalase; Lagune de Bizerte; Moule; Palourde; Biomarker; Catalase; Lake Bizerte; Mussel; Clam.	
Resumo: 	The variations of catalase activity, which is a biochemical biomarker of exposure to an oxidative stress, were followed month by month (from May 1998 to May 1999) in Mediterranean clams (Ruditapes decussatus) collected at three stations (J, A and F), and mussels (Mytilus galloprovincialis) collected at two stations (J and C) in Lake Bizerte (Tunisia). Several oceanographic parameters were measured together with catalase activity in the animals to evaluate the quality of waters in the lake. Whatever the station taken into consideration, catalase activity in clams significantly varied as a function of the season, with marked increases in September, when the quality of waters was poor. Clams originating from station A presented the highest mean activity (147.27 +/- 10.69 mu mol min(-1) mg(-1) proteins), those from J had the most fluctuating monthly activity with a minimum of 68.98 mu mol min(-1) mg(-1) proteins (April 1999) and a maximum of 189.32 mu mol min(-1) mg-' proteins (September 1998). In mussels, the response of the anti-oxidant activity was comparable to that observed with clams. Monthly catalase activity was generally high in summer. This seasonal increase was especially significant in mussels from station J, which is submitted to a hyper-eutrophication phenomenon in summer. Catalase activity in mussels originating from station C, fairly constant throughout the year, varied in the range 64.23 mu mol min(-1) mg(-1) proteins (June) to 83.54 mu mol min(-1) mg(-1) proteins (September). The level of dissolved oxygen, negatively and significantly correlated with temperature, reached a minimum in summer. These environmental factors may, thus, exert an influence upon catalase activity measured in bivalves from the Lake Bizerte.	
Tipo: 	Text	
Idioma: 	Francês	
Identificador: 	http://archimer.ifremer.fr/doc/00322/43354/42859.pdf

DOI:10.1016/S0399-1784(01)01145-8

http://archimer.ifremer.fr/doc/00322/43354/	
Editor: 	Gauthier-villars/editions Elsevier	
Formato: 	application/pdf	
Fonte: 	Oceanologica Acta (0399-1784) (Gauthier-villars/editions Elsevier), 2001-05 , Vol. 24 , N. 3 , P. 263-271	
Fonte: 	2001 Éditions scientifiques et médicales Elsevier SAS

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