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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 107, No. 3, 2012, pp. 294-302
Bioline Code: oc12043
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 107, No. 3, 2012, pp. 294-302

 en Field optimisation of MosquiTRAP sampling for monitoring Aedes aegypti check for this species in other resources Linnaeus (Diptera: Culicidae)
de Resende, Marcelo Carvalho; de Ázara, Tatiana Mingote Ferreira; Costa, Ione Oliveira; Heringer, Laila Costa; de Andrade, Mateus Ramos; Acebal, José Luiz & Eiras, Álvaro Eduardo

Abstract

A sticky trap designed to capture gravid Aedes (Stegomyia) aegypti check for this species in other resources mosquitoes, MosquiTRAP, has been evaluated for monitoring this species in Brazil. However, the effects of trap densities on the capture rate of Ae. aegypti females and the sensitivity of vector detection are still unknown. After a preliminary study has identified areas of high and low female mosquito abundance, a set of experiments was conducted in four neighbourhoods of Belo Horizonte (state of Minas Gerais, Brazil) using densities of 1, 2, 4, 8, 16, 32 and 64 traps per block. Trap sensitivity (positive Mosquitrap traptrap index) increased significantly when 1-8 MosquiTRAPs were installed per block in both high and low abundance areas. A strong fit was obtained for the total number of mosquitoes captured with increasing trap densities through a non-linear function (Box-Lucas) (r2 = 0,994), which likely exhibits saturation towards an equilibrium level. The capacity of the mean female Aedes index to distinguish between areas of high and low Ae. aegypti abundance was also investigated; the achieved differentiation was shown to be dependent on the MosquiTRAP density.

Keywords
Aedes aegypti - sticky trap - trap density - Box-Lucas function

 
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