Freshwater mussel die-off attributed to anticholinesterase poisoning

Autor:	Tom Augspurger, W. J. Fleming, J. A. Alderman
Rok vydání:	1995
Předmět:	animal structures Ecology Health Toxicology and Mutagenesis Elliptio Endangered species Zoology Mussel Biology Bivalvia biology.organism_classification Anticholinesterase poisoning Carbamate pesticides Environmental Chemistry Adductor muscles Mollusca
Zdroj:	Environmental Toxicology and Chemistry. 14:877-879
ISSN:	1552-8618 0730-7268
Popis:	In 1990, we investigated a die-off of freshwater mussels in north-central North Carolina. An estimated 1,000 mussels of several species were found dead or moribund, including about 111 Tar spinymussels (Elliptio steinstansana) a federally listed endangered species. The die-off occurred during a period of low flow and high water temperature in a stream reach dominated by forestry and agriculture. Pathological examinations did not show any abnormalities and indicated that the die-off was an acute event. Chemical analyses of mussels, sediments, and water revealed no organophosphorus or carbamate pesticides. Cholinesterase activity in adductor muscle from Eastern elliptios (Elliptio complanata) collected at the kill site and downstream was depressed 73 and 65%, respectively, compared with upstream reference samples. The depression is consistent with a diagnosis of anticholinesterase poisoning. This is the first documented case in which cholinesterase-inhibiting compounds have been implicated in a die-off of freshwater mussels.
Databáze:	OpenAIRE
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