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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 105, No. 8, 2010, pp. 1061-1064
Bioline Code: oc10182
Full paper language: English
Document type: Short Communication
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 105, No. 8, 2010, pp. 1061-1064

 en Attraction of Chagas disease vectors (Triatominae) to artificial light sources in the canopy of primary Amazon rainforest
Castro, Marcelo C. M.; Barrett, Toby V.; Santos, Walter S.; Abad-Franch, Fernando & Rafael, José A.

Abstract

Adult triatomines occasionally fly into artificially lit premises in Amazonia. This can result in Trypanosoma cruzi check for this species in other resources transmission to humans either by direct contact or via foodstuff contamination, but the frequency of such behaviour has not been quantified. To address this issue, a light-trap was set 45 m above ground in primary rain- forest near Manaus, state of Amazonas, Brazil and operated monthly for three consecutive nights over the course of one year (432 trap-hours). The most commonly caught reduviids were triatomines, including 38 Panstrongylus geniculatus check for this species in other resources , nine Panstrongylus lignarius check for this species in other resources , three Panstrongylus rufotuberculatus check for this species in other resources , five Rhodnius robustus check for this species in other resources , two Rhodnius pictipes check for this species in other resources , one Rhodnius amazonicus check for this species in other resources and 17 Eratyrus mucronatus check for this species in other resources . Males were collected more frequently than females. The only month without any catches was May. Attraction of most of the known local T. cruzi vec- tors to artificial light sources is common and year-round in the Amazon rainforest, implying that they may often invade premises built near forest edges and thus become involved in disease transmission. Consequently, effective Chagas disease prevention in Amazonia will require integrating entomological surveillance with the currently used epidemiological surveillance.

Keywords
Triatominae - light-trapping - Amazon rainforest - Chagas disease

 
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