DUQUE L., JONNY E.; SILVA, ALLAN M.; FANTINATTI, ELAINE C. S.    NAVARRO-SILVA, MARIO A.. Resistance of Aedes aegypti (Díptera: Culicidae) to temephos in Paraná State, Brazil. []. , 41, 2, pp.205-211. ISSN 0120-0488.

The number of dengue cases has increased drastically the state of Paraná since 1995 without a consistent explanation. In order to contribute to this subject, the susceptibility of A. aegypti to the insecticide temephos was evaluated in several municipalities in Paraná, along with seasonal variation of oviposition of Aedes spp. in Maringá and Jacarezinho. Comparison of mortality and resistance rates RR₉₅ (CD = 0.0060 mg/L) of the Rockefeller temephos strain (Rock) on individuals from these locales showed that vector populations from Foz do Iguaju (67.5 ± 7.7; RR₉₅ = 3.9), Paranavaí (58.1 ± 14; RR₉₅ = 3.4), Maringá (57.8 ± 5.2; RR₉₅ = 6.9), Ibipora (68.75 ± 3.9; rR₉₅ = 6.6), and Jacarezinho (73.3 ± 7.5; RR₉₅ = 3) were resistant; while those from Cambé (81.56 ± 10; RR₉₅ = 2.6) had an incipient change in susceptibility. The vector populations in Maringá and Ibipora displayed average resistances (RR₉₅ > 5 and < 10), while the others showed low resistance (RR₉₅ < 5). In Maringá and Jacarezinho, oviposition fluctuation was lower in winter.

: Chemical control; Dengue; Susceptibility; Vector.

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