Bt transgenic crops do not have favorable effects on resistant insects

Abstract Sayyed et al. (Ecology Letters (2003) 6: 167–169) hypothesized that insecticidal Bacillus thuringiensis (Bt) toxins produced by transgenic crops could have nutritionally favorable effects that increase the fitness of resistant insects eating such crops. This idea was based on increased pupal weight of resistant larvae of diamondback moth, Plutella xylostella (L.), fed leaf discs treated externally with a Bt toxin. We summarize evidence from diamondback moth and other pests showing that the Bt toxins in transgenic crops do not enhance performance of resistant insects. Aside from a few notable exceptions in which performance of resistant insects did not differ between Bt and non-Bt crops, Bt crops had adverse affects on resistant insects. Bt Bacillus thuringiensis

• Publication year

  2004

• Venue

  Journal of Insect Science

• Publication date

  2004-02-12

• Fields of study

  Biology, Medicine, Environmental Science

• Identifiers
  DOI 10.1673/031.004.0401PMID 15861220PMCID 455678
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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