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Callaghan A, Hemingway J, Malcolm CA: The selection and genetic analysis of esterase electromorphs in an organophosphate-resistant strain of Culex pipiens from Italy. Biochem Genet. 1993 Dec;31(11-12):459-72.
Results indicate that elevated A2 and nonelevated A4i are alleles of a single gene (Est-3 locus), as are elevated B2 and nonelevated B1i (Est-2 locus).
In Lucca, A2 and B2 replaced A1, suggesting a selective advantage to the former over the latter in the presence of chlorpyrifos. |
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