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A comparative study of a new insecticide-impregnated fabric trap for monitoring adult mosquito populations resting indoors

Published online by Cambridge University Press:  10 July 2009

P. K. Das ,
N. Sivagnaname  and
D. D. Amalraj
P. K. Das
Affiliation:
Vector Control Research Centre (Indian Council of Medical Research), Medical Complex, Indira Nagar, Pondicherry 605 006, India
N. Sivagnaname
Affiliation:
Vector Control Research Centre (Indian Council of Medical Research), Medical Complex, Indira Nagar, Pondicherry 605 006, India
D. D. Amalraj
Affiliation:
Vector Control Research Centre (Indian Council of Medical Research), Medical Complex, Indira Nagar, Pondicherry 605 006, India
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Abstract

An insecticide impregnated fabric (IIF) trap was developed at the Vector Control Research Centre, India. The mosquito sampling efficiency of this new trap, relative to hand catches of indoor resting mosquitoes, was evaluated in human dwellings and cattle sheds in a filariasis endemic area. The predominant species collected in human dwellings was Culex quinquefasciatus Say, a vector of bancroftian filariasis; whereas mosquitoes of the Culex vishnui group Theobald and Anopheles subpictus Grassi were caught in relatively greater numbers in cattle sheds. The numbers of mosquitoes in the trap were significantly correlated with the numbers caught in hand catches, and the numbers of mosquitoes collected per two traps per day in the three habitats during the study period were 1.79, 0.95 and 2.27x those collected by hand-catches. The number of occasions on which mosquitoes were detected by both methods was comparable. There was no evidence for a systematic difference in the age-structure and parasite distribution between the two sampling methods, suggesting that the trap is able to monitor both insect vectors and parasite infections. Therefore, the calculation of infection and infectivity rates necessary to monitor filariasis transmission should be possible from the IIF trap in filariasis endemic areas where control measures are being taken.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 87 , Issue 4 , August 1997 , pp. 397 - 403
Copyright
Copyright © Cambridge University Press 1997

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