Detoxification enzymes of freshwater crayfish Procambarus clarkii fed a diet enriched in selenium: Preliminary results

This study aimed at investigating the extent of accumulation of selenium in the hepatopancreas of the crayfish Procambarus clarkii and its effects on the enzymatic activities of catalase, glutathione peroxidase, and glutathione reductase. Crayfish were fed for 15 days either a diet enriched in Se, E...

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Published inMarine and freshwater behaviour and physiology Vol. 40; no. 3; pp. 195 - 199
Main Authors Elia, Antonia Concetta, Dörr, Ambrosius Josef Martin, Prearo, Marino, Taticchi, Maria Illuminata, Abete, Maria Cesarina
Format Journal Article
LanguageEnglish
Published Taylor & Francis Group 01.09.2007
Subjects
antioxidant enzymes
Cambaridae
Crayfish
detoxification
diet
Freshwater
Procambarus clarkii
selenium
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Summary:This study aimed at investigating the extent of accumulation of selenium in the hepatopancreas of the crayfish Procambarus clarkii and its effects on the enzymatic activities of catalase, glutathione peroxidase, and glutathione reductase. Crayfish were fed for 15 days either a diet enriched in Se, ED (1.21 mg kg −1 ) or a standard diet, SD (0.30 mg kg −1 ). Results showed that Se accumulation is higher in the sample subject to ED rather than to SD. A sexual difference was found for the response of the analyzed enzymes in the ED sample only. Catalase activity and glutathione peroxidase activity decreased in females and males, respectively, whereas glutathione reductase activity showed significant reductions in both sexes. These preliminary data might provide information about prooxidant effects of Se on P. clarkii when fed a Se enriched diet.
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ISSN:1023-6244
1029-0362
DOI:10.1080/10236240701556976