Toxic Effects of Dimethoate and Carbaryl Pesticides on Protein Metabolism of the Freshwater Snail Lymnaea acuminata P. K. Tripathi, A. Singh Natural Products Laboratory, Department of Zoology, D. D. U. Gorakhpur University, Gorakhpur 273 009 (U.P.), India Received: 25 January 2002/Accepted: 14 August 2002 Correspondence to: A. Singh Bull. Environ. Contam. Toxicol. (2003) 70:146 –152 © 2003 Springer-Verlag New York Inc. DOI: 10.1007/s00128-002-0168-5 Bulletin of Environmental Contamination and Toxicology 146