Esterase patterns in Culex (C.) quinquefasciatus Say, 1823, and its relation to malathion organophosphate insecticide resistance
Bisset Lazcano, J.; Berovides, V.; Rodríguez Coto, M.M.; Díaz Pantoja, C.
Revista Cubana de Medicina Tropical 43(3): 181-185
1991
ISSN/ISBN: 0375-0760 PMID: 9768186 Document Number: 371289
This paper describes the esterase patterns found in a wild strain of Culex quinquefasciatus which was known to bear resistance genes and the existence of genetic polymorphism for such esterases is demonstrated. The most frequent polymorphisms found were Est-1, Est-2, and Est-3; Est-2 was possibly responsible for Culex quinquefasciatus resistance. The frequency of potentially resistant females was significantly higher as compared to males: in addition, the hypothesis was proposed that heterozygotie Est-3 is selected as a genotype which may contribute to resistance in neotropical areas.