Format

Send to

Choose Destination
Environ Pollut. 2009 Feb;157(2):609-17. doi: 10.1016/j.envpol.2008.08.017. Epub 2008 Oct 19.

Influence of toxic cyanobacteria on community structure and microcystin accumulation of freshwater molluscs.

Author information

1
ECOBIO, Université de Rennes 1, CNRS, Avenue du Général Leclerc, 35042 Rennes, France. claudia.gerard@univ-rennes1.fr

Abstract

Community structure and microcystin accumulation of freshwater molluscs were studied before and after cyanobacterial proliferations, in order to assess the impact of toxic blooms on molluscs and the risk of microcystin transfer in food web. Observed decrease in mollusc abundance and changes in species richness in highly contaminated waters were not significant; however, relative abundances of taxa (prosobranchs, pulmonates, bivalves) were significantly different before and after cyanobacterial bloom. Pulmonates constituted the dominant taxon, and bivalves never occurred after bloom. Microcystin accumulation was significantly higher in molluscs from highly (versus lowly) contaminated waters, in adults (versus juveniles) and in pulmonates (versus prosobranchs and bivalves). Results are discussed according to the ecology of molluscs, their sensitivity and their ability to detoxify.

PMID:
18938004
DOI:
10.1016/j.envpol.2008.08.017
[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Elsevier Science
Loading ...
Support Center