期刊
ENVIRONMENTAL POLLUTION
卷 157, 期 4, 页码 1332-1336出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2008.11.031
关键词
Perfluorooctane sulfonic acid; Behaviour; Damselfly; Larvae; Aquatic
资金
- FWO [G018509N]
- Institute for the Promotion of Innovation
Perfluorooctane sulfonic acid (PFOS) is a persistent and ubiquitous environmental contaminant that has been detected in organisms worldwide. Here, we evaluate whether long-term (1 and 4 months) exposure to PFOS contamination affects the behavioural performance of freshwater larvae of the damselfly Enallagma cyathigerum (Insecta: Odonata). Our results show reduced behavioural performance with increasing PFOS concentration. In 1 month exposed larvae, no observed effect concentrations (NOECs) were 100 mu g/L for general activity. In 4 months exposed larvae, NOECs were 10 mu g/L, for each behavioural trait, except swimming acceleration of male larvae where the NOEC was 100 mu g/L When faced with PFOS concentrations above the NOEC, E. cyathigerum larvae were less active, less capable to escape a simulated predator attack and less efficient in foraging. Together, our results show that damselfly larvae suffer reduced survival-related behavioural performance. (C) 2008 Elsevier Ltd. All rights reserved.
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