Your browser doesn't support javascript.
loading
Performance of Eriopis connexa (Coleoptera: Coccinellidae) resistant to lambda-cyhalothrin after extended recovery from knockdown.
Santos, D S; Rodrigues, A R S; Torres, J B; Lira, R.
Afiliação
  • Santos DS; Centro de Ciências Agrárias, Univ Federal de Alagoas, Rio Largo, AL, Brasil.
  • Rodrigues AR; Instituto Federal Goiano-Câmpus Rio Verde, Rod. Sul Goiana, Km 01, Zona Rural, CEP 75901-970, Rio Verde, GO, Brasil. agna.rodrigues@ifgoiano.edu.br.
  • Torres JB; Depto de Agronomia-Entomologia, Univ Federal Rural de Pernambuco, Recife, PE, Brasil.
  • Lira R; Depto de Agronomia-Entomologia, Univ Federal Rural de Pernambuco, Recife, PE, Brasil.
Neotrop Entomol ; 45(6): 718-724, 2016 Dec.
Article em En | MEDLINE | ID: mdl-27394718
A population of the predatory lady beetle Eriopis connexa (Germar) (Coleoptera: Coccinellidae) was recorded as resistant to lambda-cyhalothrin. Adults exposed to this insecticide have recovered from knockdown after 72 h. Thus, the performance of resistant (R) and susceptible (S) populations of E. connexa not exposed to insecticide (R0 and S0) and R adults recovering from knockdown 24, 48, and 72 h after exposure (R24, R48, and R72) was studied. In addition, the fertility life table parameters were calculated for one generation considering the progenies from R0, S0, and R24 populations. The recovery rate from knockdown was 69.4% for R-adults, and greater recovery rate was observed within 48 h following lambda-cyhalothrin exposure. The S-females produced about 50% more eggs and lived longer, when compared with R-females irrespective of the recovery periods after knockdown. The R-females produced similar number of eggs and exhibited similar longevity across all treatments (R0, R24, R48, and R72). Progenies produced by R- and S-populations did not exhibit consistent differences in development and survival. The fertility life table parameters showed higher intrinsic rate of population growth (rm) and lower mean generation time (T) for R0- and R24-females, when compared with those for S0-females. Thus, the time interval needed to recover from knockdown is not related to the adaptive cost of resistance in E. connexa.
Assuntos
Palavras-chave
Buscar no Google
Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Piretrinas / Besouros / Inseticidas Limite: Animals Idioma: En Revista: Neotrop Entomol Assunto da revista: BIOLOGIA Ano de publicação: 2016 Tipo de documento: Article País de afiliação: Brasil País de publicação: Holanda
Buscar no Google
Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Piretrinas / Besouros / Inseticidas Limite: Animals Idioma: En Revista: Neotrop Entomol Assunto da revista: BIOLOGIA Ano de publicação: 2016 Tipo de documento: Article País de afiliação: Brasil País de publicação: Holanda