Pesticides residues were quantified in 109 frogs comprising two species (Fejervarya limnocharis and Hoplobatrachus crassus) from organic and conventional paddy farms in Kerala, India. Seven frogs from conventional but none from the organic farms revealed deformities. Levels of total Organochlorines (OCs) (33.22 ng/g) and Synthetic Pyrethroid, Fenvalerate-II (26.91/42.15 ng/g) in deformed F. limnocharis and H. crassus were significantly greater than in healthy frogs. Among OCs in healthy frogs, traces of γ (gamma)-HCH (hexachlorocyclohexane) (2.12 ng/g) were found only in F. limnocharis from organic farm. Among Organophosphates, Phorate (1.02 ng/g) and Quinalphos (2.62 ng/g) were present in traces in deformed F. limnocharis, while Parathion ethyl (1.02 ng/g) was detected in deformed H. crassus. The data indicate that the high level of pesticides may have contributed to the deformity of frogs. Therefore, an elaborative study will be essential to conserve amphibians in India.
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