Effects of dietary exposure to forest pesticides on the brown garden snail Helix aspersa mueller
Brown garden snails, Helix aspersa, were fed prepared diets with 12 pesticides used in forest spraying practices where endangered arboreal and terrestrial snails may be at risk. Acephate, atrazine, glyphosate, hexazinone, and picloram were not lethal at concentrations of 5,000 mg/kg in 14-day screening tests. The remaining seven pesticides, lethal to 13-100% of the tested snails at 5,000 mg/kg, were evaluated in 10-day definitive feeding tests. Azinphosmethyl (Guthion) and aminocarb were the most toxic, with 10-day LC50s of 188 and 313 mg/kg, respectively. Paraquat, trichlorfon and fenitrothion had 10-day LC50s of 659, 664, and 7,058 mg/kg respectively. Avoidance of pesticide-containing foods occurred, e.g., 10-day LC50s of >10,000 mg/kg for carbaryl and ethyl parathion. Significant descreases (p<0.05) in snail weight (total, shell-only, body-only) or shell diameter were accompanied by a significant decrease in the amount of food consumed/snail/day. Concentrations of pesticide in tissues were measured in snails exposed to atrazine and azinphosmethyl; there was no bioaccumulation. (Copyright (c) 1994 Springer-Verlag New York Inc.)
- Research Organization:
- Environmental Protection Agency, Corvallis, OR (United States). Environmental Research Lab.
- OSTI ID:
- 7305122
- Report Number(s):
- PB-94-157211/XAB; EPA-600/J-94/156
- Resource Relation:
- Other Information: Pub. in Archives of Environmental Contamination and Toxicology, Vol. 26, 23-28(1994). See also PB--89-126072
- Country of Publication:
- United States
- Language:
- English
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