Effect of nutritional state and dispersal on the reproductive efficiency in Triatoma infestans (Klug, 1834) (Hemiptera: Reduviidae: Triatominae) susceptible and resistant to deltamethrin

摘要: Abstract The dispersal of insects is determinant in the colonization new areas and propagation insecticide resistance. Nutritional status reproductive characteristics determine capacity after event. Studies about effects on reproduction triatomines are few none resistant insects. aim was to nutritional state subsequent potential Triatoma infestans (Klug, 1834) susceptible deltamethrin. Three states were obtained with number feeds (NF) offered (0, 1 or 2). females evaluated only NF1. experimental arena 10 m long contained two shelters. Groups 30 virgin each NF released one shelters able move during 3 days/nights. Females without possibility controls. parameters determined couples between males from breeding. results showed that most dispersed by walking. had deltamethrin-susceptible this depended feeds. Fecundity, fertility proportion oviposited higher but lower less In addition, effect life time also toxicological phenotype. insect greater fecundity more weeks when they did not do it, opposite observed ones. Finally, resistance an span whether not.