Effects of two cholinesterase-inhibiting pesticides on freshwater mussels
Environmental Toxicology and Chemistry, ISSN: 0730-7268, Vol: 15, Issue: 2, Page: 131-137
1996
- 76Citations
- 36Captures
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Article Description
The freshwater mussel Elliptio complanata and the Asiatic clam Corbicula fluminea were exposed for 96 h at 21°C to aldicarb, a carbamate pesticide, and acephate, an organophosphate pesticide. Test pesticide concentrations ranged from 0 to 320 mg/L. We found no mortality under these conditions. Relative to controls, cholinesterase (ChE) activity in adductor muscle from E. complanata was significantly depressed at concentrations as low as 0.1 mg aldicarb/L, and 1.3 mg acephate/L. Higher pesticide concentrations were required to inhibit ChE activity in whole bodies of C. fluminea than in adductor muscle of E. complanata. Raising the experimental temperatures from 21 to 30°C increased pesticide induced mortality, with mussels dying at aldicarb or acephate concentrations of only 5 mg/L. Cholinesterase activities of adductor muscle depressed 94 to 96% relative to controls began to recover within 2 and 12 d, but they were not fully recovered for 12+ and 24+ d following aldicarb and acephate exposures. Both aldicarb and acephate at 5 mg/L reduced shell closure responsiveness of mussels, with more pronounced effects observed at 27°C than at 21°C. Our data support the usefulness of determining ChE activity in adductor muscle to identify the exposure of freshwater mussels to ChE-inhibiting pesticides.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=0030040119&origin=inward; https://academic.oup.com/etc/article/15/2/131/7862443; http://dx.doi.org/10.1002/etc.5620150210; http://entc.allenpress.com/perlserv/?request=get-abstract&doi=10.1897%2F1551-5028(1996)015%3C0131%3AEOTCIP%3E2.3.CO%3B2; https://dx.doi.org/10.1002/etc.5620150210; https://setac.onlinelibrary.wiley.com/doi/10.1002/etc.5620150210; http://dx.doi.org/10.1897/1551-5028%281996%29015%3C0131%3Aeotcip%3E2.3.co%3B2; https://dx.doi.org/10.1897/1551-5028%281996%29015%3C0131%3Aeotcip%3E2.3.co%3B2
Oxford University Press (OUP)
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