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Responses of Anopheles culicifacies sibling species A and B to DDT and HCH in India: implications in malaria control
Author(s) -
SUBBARAO SARALA K.,
VASANTHA K.,
SHARMA V. P.
Publication year - 1988
Publication title -
medical and veterinary entomology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.028
H-Index - 82
eISSN - 1365-2915
pISSN - 0269-283X
DOI - 10.1111/j.1365-2915.1988.tb00186.x
Subject(s) - anopheles culicifacies , biology , sibling species , malaria , vector (molecular biology) , anopheles , ecology , toxicology , veterinary medicine , immunology , medicine , recombinant dna , biochemistry , gene
. Differential responses of Anopheles culicifacies Giles sibling species A and B to DDT were evident from higher survival rate of species B in laboratory bioassays and greater proportions of species B in DDT‐sprayed villages of northern India, compared with those under HCH pressure. Both species A and B have become almost completely resistant to HCH in this area due to regular house‐spraying with HCH for about the last 10 years. Because species A predominates in northern India, where it has been incriminated as an important vector of malaria, and species A is more susceptible than species B to DDT, it is suggested that DDT would control malaria transmission more effectively than HCH in this situation. Monitoring of insecticide resistance in species A is therefore recommended as the basis for future choice of insecticides to be used by the National Malaria Eradication Programme.