[Air temperature elevation as an alternative for the control of deltamethrin-resistant Triatoma infestans (Hemiptera, Reduviidae)].
This study explores the effects of artificial air temperature elevation on the embryonic, nymphal, and adult forms of deltamethrin-resistant Triatoma infestans. In the laboratory, complete offspring of T. infestans were exposed to increasing air temperatures to determine the viability of eggs and survival of nymphs and adults; in the field, the experiment was conducted in a poor rural dwelling previously identified as infested with the vector. The laboratory phase showed 100% non-viability of eggs and 100% mortality of nymphs and adults exposed to airtight temperatures from 45 degrees C to 55 degrees C, while the field phase succeeded in reproducing the heat's ovicidal effect and negative conversion of entomological assays in the experimental dwelling, as conducted over the course of 72 hours at 30, 60, and 90 days from the baseline evaluation. Artificial elevation of airtight temperature on dwellings proved to be an acceptable, harmless, and technically simple control method.
Coordinación de Gestión Epidemiológica, Ministerio de Salud Pública, Salta, Argentina. agentile@gobiernosalta.gov.ar
Alberto G
AG
Gentile
José L
JL
Sartini
María C
MC
Campos
Juan F
JF
Sánchez
D000818:Animals; D014355:Chagas Disease / Q000517:prevention & control; D006358:Hot Temperature; D006798:Housing; D006801:Humans; D007300:Insect Control; D007305:Insecticide Resistance; D007306:Insecticides; D009570:Nitriles; D011722:Pyrethrins; D014224:Triatoma / Q000187:drug effects / Q000254:growth & development*
D007306:Insecticides; D009570:Nitriles; D011722:Pyrethrins; C017180:decamethrin