title: Aedes aegypti and Aedes albopictus (Diptera: Culicidae): coexistence and susceptibility to temephos, in municipalities with occurrence of dengue and differentiated characteristics of urbanization.
abstract: BACKGROUND
  The aim of the present study was to verify the coexistence between Aedes aegypti and Aedes albopictus populations in municipalities of the States of Paraná and Santa Catarina with different urbanization profiles where dengue occurs and evaluate their susceptibility to the organophosphate temephos.
  
  
  METHODS
  The number of eggs per ovitrap were counted and incubated for hatching to identify the species. Data analysis of the populations was conducted to determine randomness and aggregation, using the variance-to-mean ratio (index of dispersion). Susceptibility to temephos was evaluated by estimation of the resistance ratios RR50 and RR95. Aedes aegypti samples were compared with the population Rockefeller and Aedes albopictus samples were compared with a population from the State of Santa Catarina and with the Rockefeller population.
  
  
  RESULTS
  Coexistence between Aedes aegypti and Aedes albopictus and the aggregation of their eggs were observed at all the sites analyzed in the State of Paraná.
  
  
  CONCLUSIONS
  All the Aedes aegypti populations from the State of Parana showed alteration in susceptibility status to the organophosphate temephos, revealing incipient resistance. Similarly, all the Aedes albopictus populations (States of Paraná and Santa Catarina) presented survival when exposed to the organophosphate temephos.
authors.affiliation: Grupo de Pesquisa em Imunoparasitologia, Universidade do Sul de Santa Catarina, Tubarão, SC. josiane.prophiro@unisul.br
authors.forename: Josiane Somariva
authors.initials: JS
authors.lastname: Prophiro
authors.forename: Onilda Santos
authors.initials: OS
authors.lastname: Silva
authors.forename: Jonny Edward Duque
authors.initials: JE
authors.lastname: Luna
authors.forename: Carla Fernanda
authors.initials: CF
authors.lastname: Piccoli
authors.forename: Luiz Alberto
authors.initials: LA
authors.lastname: Kanis
authors.forename: Mario Antonio Navarro da
authors.initials: MA
authors.lastname: Silva
mesh_terms: D000330:Aedes; D000818:Animals; D001938:Brazil; D003715:Dengue / Q000635:transmission; D007303:Insect Vectors; D007305:Insecticide Resistance; D007306:Insecticides; D013045:Species Specificity; D000002:Temefos; D014507:Urbanization
chemical_list: D007306:Insecticides; D000002:Temefos