Cited by 66Insect Resistance and GeneticsInsect-Plant Interactions and ControlGenetically Modified Organisms Research

Characterizing indirect prey-quality mediated effects of a Bt crop on predatory larvae of the green lacewing, Chrysoperla carnea

Lawo, Nora C., Wäckers, Felix L., Romeis, Jörg·2010·Journal of Insect Physiology

Abstract

There is increasing evidence that insecticidal transgenic crops can indirectly cause detrimental effects on arthropod predators or parasitoids when they prey on or parasitize sublethally affected herbivores. Our studies revealed that Chrysoperla carnea is negatively affected when fed Bt-susceptible but not Cry1Ac-resistant Helicoverpa armigera larvae that had fed Bt-transgenic cotton expressing Cry1Ac. This despite the fact that the predators ingested 3.5 times more Cry1Ac when consuming the resistant caterpillars. In order to detect potential differences in the nutrient composition of prey larvae, we evaluated the glycogen and lipid content plus the sugar and free amino acid content and composition of caterpillars fed non-Bt and Bt cotton. The only change in susceptible H. armigera larvae attributable to Bt cotton feeding were changes in sugar concentration and composition. In case of the Cry1Ac-resistant H. armigera strain, feeding on Bt cotton resulted in a reduced glycogen content in the caterpillars. The predators, however, appeared to compensate for the reduced carbohydrate content of the prey by increasing biomass uptake which caused an excess intake of the other analyzed nutritional compounds. Our study clearly proves that nutritional prey-quality factors other then the Bt protein underlie the observed negative effects when C. carnea larvae are fed with Bt cotton-fed prey. Possible factors were an altered sugar composition or fitness costs associated with the excess intake of other nutrients.

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Crossref · 10.1016/j.jinsphys.2010.06.012

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  • The importance of prey/host-quality effects has been demonstrated experimentally for parasitoids Diadegma insulare and Macrocentrus cingulum and predators C. carnea and C. maculata.

    “The importance of such prey/host-quality effects has been demonstrated experimentally for the parasitoids Diadegma insulare (Hymenoptera: Ichneumonidae) (Chen et al., 2008) and Macrocentrus cingulum (Hymenoptera: Braconidae) (Wang et al., 2017) and for the predators C. carnea (Lawo et al., 2010) and C. maculata (Li et al., 2011).”

    From Genetically engineered crops help support conservation biological control (2019) · cites this paper as Lawo et al., 2010

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Authors
Lawo, N. C., Wäckers, F. L., & Romeis, J.
Affiliations
  • Agroscope (CH)
  • Lancaster University (GB)
Corresponding author
Romeis, Jörg
Venue
Journal of Insect Physiology
Publisher
Elsevier BV
Published
2010-11
Volume
56
Issue
11
Pages
1702-1710
ISSN
0022-1910 (ISSN-L)
OpenAlex
W1974495242
Cited by
66
References
57
Citations by year
2026: 2 · 2025: 2 · 2024: 1 · 2023: 3 · 2022: 3 · 2021: 2 · 2020: 3 · 2019: 8 · 2018: 3 · 2017: 7 · 2016: 2 · 2015: 3 · 2014: 7 · 2013: 7 · 2012: 7
FWCI
2.60
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Insect Physiology (publishedVersion)
  • PubMed (publishedVersion)
Funders
Commonwealth Scientific and Industrial Research Organisation
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Insect Resistance and Genetics
  • Life Sciences › Agricultural and Biological Sciences › Insect Science › Insect-Plant Interactions and Control
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Genetically Modified Organisms Research
Keywords
Bt cotton, Cry1Ac, Chrysoperla carnea, green lacewings, Helicoverpa armigera, prey quality, genetically modified crops, Cry1Ac resistance, glycogen, lipid content, sugar composition, amino acids
MeSH terms
Bacillus thuringiensis Toxins, Animals, Bacterial Proteins, Gossypium, Endotoxins, Hemolysin Proteins, Insecticides, Insecta, Larva, Pest Control, Biological, Predatory Behavior

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