Abstract
The metabolism of 14C-fenothiocarb [S-4-(phenoxy-U-14C)butyl N, N-dimethylthiocarbamate] in cirtus red mite Panonychus citri MCGREGOR was studied by the contact method. Fenothiocarb penetrated rapidly into mites and was metabolized. Approximately thirteen metabolites except unchanged fenothiocarb were found by two dimensional thin layer chromatography. The matebolites identified were S-4-phenoxybutyl N-hydroxymethyl-N-methylthiocarbamate, S-4-phenoxybutyl N-formyl-N-methylthiocarbamate, S-4-phenoxybutyl N-methylthiocarbamate, S-(4'-hydroxyphenoxy)bytyl N, N-dimethylthiocarbamate, fenothiocarb sulfoxide and 4-phenoxybutylsulfonic acid in free or conjugate form. Primary site of fenothiocarb metabolism in citrus red mites seemed to be the oxidation of N-methyl moiety of fenothiocarb.
