vector biology

May 12th, 2015
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Vector Biology and Control1.1Studies on Anopheline SpeciesComplexes1.1.1 The Culicifacies ComplexBionomics and Distribution PatternAnopheles culicifacies populations from malariaendemic districts, namely Ranchi and Gumla(Jharkhand state) were examined for siblingspecies composition. In District Ranchi, cytological examination of the samples collectedfrom villages under Primary Health Centres,Angada and Bharno revealed the prevalenceof species B and C with predominance of theformer, whereas in District Gumla, An. culicifacies species B and C were found in almostequal proportion in the villages surveyed.Similarly, in District Bastar (Chhattisgarhstate) species B and C were sympatric withpredominance of the latter (87.5%). In a longitudinal study in District Jabalpur (MadhyaPradesh), examination of An. culicifacies populations for the second successive year revealed the prevalence of species B, C and D inthe study villages with predominance of species C (>70%). The established vector species(C & D) together constituted >90% of the totalAn. culicifacies population, whereas proportionof non-vector species B was low suggestinghigh malariogenic potential of the study area.In all above mentioned districts, An. culicifaciessibling species were found to be predominantly zoophagic as revealed by blood mealsource analysis.1.1.2 Fluviatilis and Minimus Complexes(Minimus Group)Bionomics and Distribution PatternAn. fluviatilis populations from malaria endemi

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