Sub-lethal responses of the large pine weevil, Hylobius abietis, to the pyrethroid insecticide lambda-cyhalothrin

Authors

  • D. ROSE,

    1. Division of Biology, Imperial College London, Silwood Park Campus, Ascot, U.K.
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  • G. A. MATTHEWS,

    1. Division of Biology, Imperial College London, Silwood Park Campus, Ascot, U.K.
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  • S. R. LEATHER

    Corresponding author
    1. Division of Biology, Imperial College London, Silwood Park Campus, Ascot, U.K.
      S. R. Leather, Division of Biology, Imperial College London, Silwood Park Campus, Ascot, Berkshire SL5 7PY, U.K. Tel.: +44 (0) 20759 42316; fax: +44 (0) 20759 42339; e-mail: s.leather@imperial.ac.uk
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S. R. Leather, Division of Biology, Imperial College London, Silwood Park Campus, Ascot, Berkshire SL5 7PY, U.K. Tel.: +44 (0) 20759 42316; fax: +44 (0) 20759 42339; e-mail: s.leather@imperial.ac.uk

Abstract

Abstract The response of the large pine weevil (Hylobius abietis) to the pesticide lambda-cyhalothrin, a pyrethroid, is investigated. Both behavioural (feeding preferences) and nutritional and physiological (lipid content) responses are recorded. Hylobius abietis shows both a significant avoidance of pesticide-treated food sources and a decrease in lipid content after exposure, but a full recovery after feeding on untreated food. It is proposed that the mechanism for the pesticide avoidance and altered lipid levels is due to an anti-feedant effect of the pesticide. Implications for pest management programmes are described.

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