Comparative status of insecticide resistance in the Helicoverpa and Heliothis species (Lepidoptera: Noctuidae) of south India

    Jadhav, D R and Armes, N J (1996) Comparative status of insecticide resistance in the Helicoverpa and Heliothis species (Lepidoptera: Noctuidae) of south India. Bulletin of Entomological Research, 86. pp. 525-531.

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    Abstract

    Helicoverpa armigera (Hübner), H. assulta Guenée and Heliothis peltigera (Denis & Schiffermüller) were collected as mixed populations from safflower and the wild host Datura metel, from Patancheru, Andhra Pradesh, India, in 1992 and 1993, and their toxicological responses to insecticides determined. Both Helicoverpa armigera strains were highly resistant to cypermethrin, fenvalerate, endosulfan and quinalphos insecticides, based on resistance ratios relative to laboratory reared susceptible strains. There was no evidence of resistance development in H. assulta and Heliothis peltigera to the same chemicals. Light trap data collected from 1974 to 1987 showed that Helicoverpa armigera was at least 100 × more abundant than the other two species over most of the cropping season. Peak catches of H. assulta and Heliothis peltigera were confined to defined times in the season, corresponding with the flowering and fruiting periods of their respective host plants; August-October for Helicoverpa assulta and November-December for Heliothis peltigera. Helicoverpa armigera on the other hand, because of its high polyphagy on commercial and wild hosts, was abundant between August and April. Resistance has not developed in H. assulta and Heliothis peltigera in southern India, probably because of their restricted host range, limiting exposure to insecticides.

    Item Type: Article
    Divisions: UNSPECIFIED
    CRP: UNSPECIFIED
    Subjects: Others > Plant Virology
    Others > Agriculture-Farming, Production, Technology, Economics
    Others > Fertilizer Applications
    Others > Entomology
    Depositing User: Library ICRISAT
    Date Deposited: 17 Dec 2011 10:21
    Last Modified: 17 Dec 2011 10:21
    URI: http://oar.icrisat.org/id/eprint/5031
    Official URL:
    Projects: UNSPECIFIED
    Funders: National Resources Institute, UK Overseas Development Administration
    Acknowledgement: UNSPECIFIED
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