Premium
Pattern of cross‐resistance in pyrethroid‐selected populations of Helicoverpa armigera Hübner (Lep., Noctuidae) from India
Author(s) -
Ramasubramanian T.,
Regupathy A.
Publication year - 2004
Publication title -
journal of applied entomology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.795
H-Index - 60
eISSN - 1439-0418
pISSN - 0931-2048
DOI - 10.1111/j.1439-0418.2004.00897.x
Subject(s) - helicoverpa armigera , indoxacarb , biology , noctuidae , pyrethroid , cross resistance , endosulfan , insecticide resistance , toxicology , lepidoptera genitalia , pesticide , botany , genetics , agronomy
In Helicoverpa armigera , withdrawal of selection pressure resulted in a two‐ to fourfold increase in susceptibility to synthetic pyrethroids and continuous selection enhanced the resistance level by four‐ to fivefold to the respective pyrethroids at the end of the 14th generation. Populations selected for resistance to one pyrethroid showed positive cross‐resistance to all other pyrethroids, but no cross‐resistance to endosulfan and thiodicarb. There was a significant increase in mixed‐function oxidase activity with advancing generation suggesting its possible role in the positive cross‐resistance among the pyrethroids. The induction of carboxyl esterases in pyrethroid‐selected populations may have resulted in the activation of indoxacarb, thereby accounting for the observed negative cross‐resistance.