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Anopheles culicifacies sibling species B and E in Sri Lanka differ in longevity and in their susceptibility to malaria parasite infection and common insecticides

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dc.contributor.author Surendran, S.N.
dc.contributor.author Ramasamy, M.S
dc.contributor.author De Silva, B.G.D.N.K
dc.contributor.author Ramasamy, R
dc.date.accessioned 2022-09-26T08:53:54Z
dc.date.available 2022-09-26T08:53:54Z
dc.date.issued 2006
dc.identifier.issn 0269283X
dc.identifier.uri http://repo.lib.jfn.ac.lk/ujrr/handle/123456789/8162
dc.description.abstract Members of the Anopheles culicifacies Giles complex (Diptera: Culicidae) are well established as the predominant vectors of malaria in Sri Lanka. Until recently, only sibling species B was reported to be present in Sri Lanka, which was surprising as species B is a poor vector of malaria in India. This was clarified by the identification through Y-chromosome morphology that what was reported as B on the island is really a mixture of B and E. The fecundity, longevity and insecticide resistance of B and E are of relevance to malaria transmission and its control and are reported in this study. The mean egg production of these two sibling species did not differ significantly. The mean age of wild mosquitoes was assessed by the Polovodova technique of observing ovarian dilatations. More of species E than B had three or more dilatations, i.e. had reached an age at which sporozoites could have developed to maturity, although the difference between the species was of borderline significance. Following feeding on Plasmodium vivax or Plasmodium falciparum infected blood, some females of species E developed oocysts but none of species B did so. Both sibling species were found fully susceptible in laboratory tests to lambdacyhalothrin and deltamethrin, but resistant to DDT and partially resistant to malathion. © 2006 The Royal Entomological Society. en_US
dc.language.iso en en_US
dc.publisher The Royal Entomological Society en_US
dc.subject Anopheles culicifacies en_US
dc.subject Fecundity en_US
dc.subject Insecticide resistance en_US
dc.subject Longevity en_US
dc.subject Plasmodium falciparum en_US
dc.subject Plasmodium vivax en_US
dc.subject Sibling species en_US
dc.subject Species B en_US
dc.subject Species E en_US
dc.subject Sri Lanka en_US
dc.title Anopheles culicifacies sibling species B and E in Sri Lanka differ in longevity and in their susceptibility to malaria parasite infection and common insecticides en_US
dc.type Article en_US


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