A Study on the Resting Preference of Mosquito Species in Wells 27-31in Vellore in Tamilnadu, South India.
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Date
2010-03
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Abstract
The resting preferences of mosquito species was investigated in domestic
wells. In addition to the routine adult surveys in human dwellings, adult
collections were also made in domestic wells using an innovated
equipment operating on the principles of spray sheet collections. Above
the water surface, wells provide humid and dark microclimate along the
inner walls. It has been observed that this microclimate provides very
congenial resting place for few mosquito species; specially for the males
and for the females between their gonotropic cycles. Larval collections in
the wells did not reveal breeding of majority of the mosquito species
collected by this technique.
Investigations were conducted in 87 wells in 11 localities during 2005.
A total of 4969 mosquitos were collected of which 69.1 % (3441) were males
and 30.9% (1528) were females. From among the mosquitos collected 96.5%
were Cu.quinquifasciatus, 0.26% All stephensi, 3.0% Aedes agypti and
0.24% Armegeres sp. The results of the analysis of the physical and
chemical parameter of water samples of the study wells before and after
the surveys endorsed the utility of this technique for entomological
investigations in outbreak situations, for monitoring the liquidation of
outbreak foci and for other research purposes.
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Keywords
adult mosquito collection, spray sheet, wells
Citation
Rajagopal V, Elango S, Jeykumar K, Madhavan J, Monhan Alamelu, Shanthi S. A Study on the Resting Preference of Mosquito Species in Wells 27-31in Vellore in Tamilnadu, South India. Journal of Communicable Diseases. 2010 Mar; 42(1): 27-31.