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Parasitoid behaviour and Bt plants

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A Correction to this article was published on 16 December 1999

Abstract

Transgenic crops that express genes targeted against insect pests may also affect non-target insects. For example, lacewings1 and monarch butterflies2 have been reported to be susceptible to toxins from Bacillus thuringiensis (Bt) that are expressed in Bt transgenic plants, although these results were obtained in small-scale laboratory assays in which insects were exposed to high levels of transgenically expressed toxin in no-choice tests. We show here that the behaviour of non-target insects can also play a part in determining how their populations will be affected by Bt plants.

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Figure 1: The percentage of parasitoids landing on Bt (brown) and wild-type (WT, green) oilseed rape leaves in choice tests in a wind tunnel.

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Authors and Affiliations

  1. Institute of Arable Crops Research Rothamsted, Harpenden, AL5 2JQ, Herts, UK

    Tanja H. Schuler, Roel P. J. Potting, Ian Denholm & Guy M. Poppy

Authors
  1. Tanja H. Schuler
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  2. Roel P. J. Potting
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  3. Ian Denholm
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  4. Guy M. Poppy
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Schuler, T., Potting, R., Denholm, I. et al. Parasitoid behaviour and Bt plants. Nature 400, 825–826 (1999). https://doi.org/10.1038/23605

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