Sindbis virus infection alters blood feeding responses and DEET repellency in Aedes aegypti (Diptera: culicidae)
Autor(es): Qualls, Whitney A.; Day, Jonathan F.; Xue, Rui-De; Bowers, Doria F.
Resumo: Aedes aegypti (L.) (Diptera: Culicidae) female mosquitoes infected systemically with Sindbis virus (SINV) took longer than uninfected mosquitoes to locate and fully engorge on blood. On days 7 and 14 postexposure, blood feeding took 1.3 and 1.5 times longer in mosquitoes with a disseminated SINV infection, respectively. SINV dissemination did not affect the average weight of unfed Ae. aegypti, but did result in a 10 and 12% increase in blood imbibed compared with mosquitoes without a positive SINV dissemination and non-SINV-exposed mosquitoes, respectively. Ae. aegypti mosquitoes with a disseminated SINV infection fed an average of 4 h sooner than uninfected mosquitoes when offered a bloodmeal contained inside a DEET (N,N-diethyl-3-methylbenzamide) saturated (30%) bovine sausage casing. Together, these results indicate that behavioral changes in mosquito host-seeking, blood feeding and sensitivity to DEET occurred in mosquitoes after SINV infection and dissemination.
Palavras-Chave: Repellents; Pest control; Aquatic insects; Entomology; Public health; Feeding; DEET; Repellency; Sausages; Infection; Aedes aegypti; Sindbis virus; Culicidae; Diptera
Imprenta: Journal of Medical Entomology, v. 49, n. 2, p. 418-423, 2012.
Descritores: Aedes aegypti - Virus ; Aedes aegypti - Repellent ; Aedes aegypti - Public health
Data de publicação: 2012
