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Diversity and seasonal densities of vector anophelines in relation to forest fringe malaria in district Sonitpur, Assam (India)

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Abstract

The prevalence and bionomics of known Indian malaria vector anophelines was studied in three forest fringe villages in Sonitpur district of Assam, India. Anopheles philippinensis/nivipes (36.8%) and An. annularis (25.6%) were the most abundant of the seven vector anopheline species recorded. Densities of vector anophelines in general were high during monsoon season and low during winter months. An. dirus s.l. was the most anthropophagic (91.6%) of all the species collected whereas, An. annularis, An. fluviatilis s.l. and An. varuna were predominantly zoophagic. The highest and the lowest slide positivity rates (SPR) was recorded during monsoon (36%) and winter (12.5%) seasons, respectively. SPR was positively correlated with vector anopheline densities (r = 0.902), which itself was found to be correlated with mean minimum temperature and relative humidity (RH).

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Acknowledgment

The authors would like to thank Dr. Lokendra Singh, Director, DRL, Tezpur for his constant encouragement and support during the conduct of the study.

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Authors and Affiliations

  1. Defence Research Laboratory, Tezpur, Assam, India

    N. G. Das, Reji Gopalakrishnan, P. K. Talukdar & Indra Baruah

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  1. N. G. Das
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  2. Reji Gopalakrishnan
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  3. P. K. Talukdar
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  4. Indra Baruah
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Correspondence to N. G. Das.

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Das, N.G., Gopalakrishnan, R., Talukdar, P.K. et al. Diversity and seasonal densities of vector anophelines in relation to forest fringe malaria in district Sonitpur, Assam (India). J Parasit Dis 35, 123–128 (2011). https://doi.org/10.1007/s12639-011-0053-4

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  • DOI: https://doi.org/10.1007/s12639-011-0053-4

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