期刊
CHEMOSPHERE
卷 77, 期 11, 页码 1569-1576出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2009.09.042
关键词
Gammarus fossarum; Digestive enzyme activities; Feeding rate; Metallic contaminant; In situ test
资金
- ECCO
- Institut National des Sciences de l'Univers (INSU) du Centre National de Recherche Scientifique (CNRS) [06CV050]
The feeding activity and afterward the assimilation of the products resulting of the food digestion, allow organisms to obtain energy useful for growth, maintenance and reproduction. These biological parameters may be studied to assess the impact of contaminants on the energy metabolism of organisms, which could induce potential effects at an individual level. The studied species was an amphipod Gammarus fossarum, which has a high ecological relevance since it is widespread in European streams and plays a major role in the breakdown of leaf litter. Thus some G. fossarum were transplanted in four sites of a river characterized by metal contamination (Amous River, France). The following parameters were studied: digestive enzymes activities (esterase, beta-glucosidase, beta-galactosidase, amylase and endoglucanase), feeding rate, metal bioaccumulation and survival. Results showed a strong relationship between digestive enzymes activities, feeding rate and metal contents. (C) 2009 Elsevier Ltd. All rights reserved.
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