The interaction of two-spotted spider mites, Tetranychus urticae Koch, with Cry protein production and predation by Amblyseius andersoni (Chant) in Cry1Ac/Cry2Ab cotton and Cry1F maize
Abstract
Crops producing insecticidal crystal (Cry) proteins from the bacterium, Bacillus thuringiensis (Bt), are an important tool for managing lepidopteran pests on cotton and maize. However, the effects of these Bt crops on non-target organisms, especially natural enemies that provide biological control services, are required to be addressed in an environmental risk assessment. Amblyseius andersoni (Acari: Phytoseiidae) is a cosmopolitan predator of the two-spotted spider mite, Tetranychus urticae (Acari: Tetranychidae), a significant pest of cotton and maize. Tri-trophic studies were conducted to assess the potential effects of Cry1Ac/Cry2Ab cotton and Cry1F maize on life history parameters (survival rate, development time, fecundity and egg hatching rate) of A. andersoni. We confirmed that these Bt crops have no effects on the biology of T. urticae and, in turn, that there were no differences in any of the life history parameters of A. andersoni when it fed on T. urticae feeding on Cry1Ac/Cry2Ab or non-Bt cotton and Cry1F or non-Bt maize. Use of a susceptible insect assay demonstrated that T. urticae contained biologically active Cry proteins. Cry proteins concentrations declined greatly as they moved from plants to herbivores to predators and protein concentration did not appear to be related to mite density. Free-choice experiments revealed that A. andersoni had no preference for Cry1Ac/Cry2Ab cotton or Cry1F maize-reared T. urticae compared with those reared on non-Bt cotton or maize. Collectively these results provide strong evidence that these crops can complement other integrated pest management tactics including biological control.
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Pyramided insecticidal proteins typically act additively in sensitive species and cause no unexpected effects in species not sensitive to individual toxins.
“The available data indicate that these pyramided insecticidal proteins typically act additively in sensitive species and cause no unexpected effects in species that are not sensitive to the individual toxins (Graser et al., 2017;Guo et al., 2016;Haller et al. 2017;Kumar et al., 2014;Levine et al., 2016;Raybould et al., 2012;Shu et al., 2018;Su et al., 2015;Svobodová et al., 2017;Tian et al., 2014T”
From Genetically engineered crops help support conservation biological control (2019) · cites this paper as Guo et al., 2016
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References 67 · Cited by 14
Research works printed but not linked: 2
- Boodley JW, Sheldrake RJ (1977) Cornell peat-lite mixes for commercial plant growing. Cornell Information Bulletin 43, Ithaca, New York
- Kennedy GG (2008) Integration of insect-resistant genetically modified crops within IPM programs. In: Romeis J, Shelton AM, Kennedy GG (eds) Integration of insect-resistant, genetically modified crops within IPM Programs. Springer, New York, pp 1-26
- Authors
- Guo, Y.-Y., Tian, J.-C., Shi, W.-P., Dong, X.-H., Romeis, J., Naranjo, S. E., Hellmich, R. L., & Shelton, A. M.
- Affiliations
- Cornell University (US)
- Agroscope (CH)
- U.S. Arid Land Agricultural Research Center (US)
- Agricultural Research Service (US)
- Corresponding author
- Shelton, Anthony M.
- Venue
- Transgenic Research
- Published
- 2015-11-06
- Volume
- 25
- Issue
- 1
- Pages
- 33-44
- ISSN
- 0962-8819 (ISSN-L)
- 1573-9368
- OpenAlex
- W2142808640
- Cited by
- 14
- References
- 67
- Citations by year
- 2025: 1 · 2022: 1 · 2020: 3 · 2019: 2 · 2018: 4 · 2017: 2 · 2016: 1
- FWCI
- 2.48
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- www.springer.com/tdm (tdm)
- Locations
- Transgenic Research (publishedVersion)
- PubMed (publishedVersion)
- Iowa State University Digital Repository (Iowa State University) (submittedVersion)
- Funders
- China Scholarship Council (CN)
- Biotechnology Risk Assessment Program (2010-33522-21772)
- Topics
- Life Sciences › Agricultural and Biological Sciences › Insect Science › Insect-Plant Interactions and Control
- 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
- Keywords
- Tetranychus urticae, Amblyseius andersoni, Bt crops, non-target effects, biological control, predatory mites, tritrophic interactions, mite life history, predator preference, integrated pest management, environmental risk assessment
- MeSH terms
- Bacillus thuringiensis Toxins, Animals, Bacterial Proteins, Zea mays, Gossypium, Endotoxins, Fertility, Hemolysin Proteins, Larva, Pest Control, Biological, Predatory Behavior, Receptors, Cell Surface, Plant Leaves, Crops, Agricultural, Risk Assessment, Insect Proteins, Plants, Genetically Modified, Tetranychidae, Herbivory
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