Journal
ENVIRONMENTAL POLLUTION
Volume 162, Issue -, Pages 234-240Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2011.11.005
Keywords
Dreissena polymorpha; Microparasites; Biological responses; Environmental monitoring
Categories
Funding
- Endocrinology Laboratory of the National Veterinary School of Lyon
- CNRS-INSU
- CPER Lorraine-ZAM (Contrat Projet Etat Region Lorraine, Zone Atelier Moselle)
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Biological responses measured in aquatic organisms to monitor environmental pollution could be also affected by different biotic and abiotic factors. Among these environmental factors, parasitism has often been neglected even if infection by parasites is very frequent. In the present field investigation, the parasite infra-communities and zebra mussel biological responses were studied up- and downstream a waste water treatment plant in northeast France. In both sites, mussels were infected by ciliates and/or intracellular bacteria, but prevalence rates and infection intensities were different according to the habitat. Concerning the biological responses differences were observed related to the site quality and the infection status. Parasitism affects both systems but seemed to depend mainly on environmental conditions. The influence of parasites is not constant, but remains important to consider it as a potential confounding factor in ecotoxicological studies. This study also emphasizes the interesting use of integrative indexes to synthesize data set. (C) 2011 Elsevier Ltd. All rights reserved.
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