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Long-term regional suppression of pink bollworm by Bacillus thuringiensis cotton
Open accessAbstract
Despite the potentially profound impact of genetically modified crops on agriculture and the environment, we know little about their long-term effects. Transgenic crops that produce toxins from Bacillus thuringiensis (Bt) to control insects are grown widely, but rapid evolution of resistance by pests could nullify their benefits. Here, we present theoretical analyses showing that long-term suppression of pest populations is governed by interactions among reproductive rate, dispersal propensity, and regional abundance of a Bt crop. Supporting this theory, a 10-year study in 15 regions across Arizona shows that Bt cotton suppressed a major pest, pink bollworm (Pectinophora gossypiella), independent of demographic effects of weather and variation among regions. Pink bollworm population density declined only in regions where Bt cotton was abundant. Such long-term suppression has not been observed with insecticide sprays, showing that transgenic crops open new avenues for pest control. The debate about putative benefits of Bt crops has focused primarily on short-term decreases in insecticide use. The present findings suggest that long-term regional pest suppression after deployment of Bt crops may also contribute to reducing the need for insecticide sprays.
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“There is evidence that Bt crops can reduce target pest populations over broad scales (Carrière et al., 2003;Dively et al., 2018;Hutchison et al., 2010;Wan et al., 2012;Wu et al., 2008;Zhang et al., 2018) resulting in reduced damage on both GE and non-GE crops in the region.”
From Genetically engineered crops help support conservation biological control (2019) · cites this paper as Carrière et al., 2003
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“The quickly increased adoption of Bt cotton led to broad, areawide control of the pest (Carrière et al., 2003) and opened the door for an opportunity to eradicate this invasive pest.”
From Genetically engineered crops help support conservation biological control (2019) · cites this paper as Carrière et al., 2003
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Metadata
- Authors
- Carrière, Y., Ellers-Kirk, C., Sisterson, M., Antilla, L., Whitlow, M., Dennehy, T. J., & Tabashnik, B. E.
- Affiliations
- University of Arizona (US)
- Department of Entomology, University of Arizona, Tucson, AZ 85721; and Arizona Cotton Research and Protection Council, 3721 East Wier Avenue, Phoenix, AZ 85040-2933
- Venue
- Proceedings of the National Academy of Sciences
- Publisher
- National Academy of Sciences
- Published
- 2003-02-05
- Volume
- 100
- Issue
- 4
- Pages
- 1519-1523
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- PMC
- PMC149864
- OpenAlex
- W2012355057
- Cited by
- 320
- References
- 26
- Citations by year
- 2026: 4 · 2025: 1 · 2024: 5 · 2023: 6 · 2022: 15 · 2021: 11 · 2020: 13 · 2019: 14 · 2018: 9 · 2017: 9 · 2016: 13 · 2015: 17 · 2014: 17 · 2013: 13 · 2012: 19
- FWCI
- 7.13
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Proceedings of the National Academy of Sciences (publishedVersion)
- Europe PMC (PubMed Central) (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Funders
- U.S. Department of Agriculture
- Arizona Cotton Research and Protection Council
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Insect Resistance and Genetics
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Genetically Modified Organisms Research
- Life Sciences › Agricultural and Biological Sciences › Insect Science › Insect-Plant Interactions and Control
- Keywords
- Pectinophora gossypiella, Bacillus thuringiensis, Bt cotton, genetically modified crops, pest population suppression, insect dispersal, reproductive rate, insecticide reduction
- MeSH terms
- Animals, Bacillus thuringiensis, Female, Male, Moths, Pest Control, Biological, Population Dynamics, Regression Analysis
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