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General Information

Document type
  • Peer-reviewed journal article
Study Type
  • nontarget
GE organism
  • cotton
GE trait
  • insect resistance
Country
  • China, UK

Results

Safety for environment
  • no effect

Reproductive Biology of Two Nontarget Insect Species, Aphis gossypii (Homoptera: Aphididae) and Orius sauteri (Hemiptera: Anthocoridae), on Bt and non-Bt Cotton Cultivars

Zhang, AG; Wan, FH; Murphy, ST; Guo, JY; Liu, WX
Environmental Entomology. 2008 August. 37(4):1035-1042

Link to full text (journal may charge for access)

DOI: 10.1603/0046-225X(2008)37[1035:RBOTNI]2.0.CO;2 ISSN: 1938-2936

Abstract

Transgenic Bt cotton, engineered to continuously produce activated Δ-endotoxins of the soil bacteria Bacillus thuringiensis, holds great promise in controlling Helicoverpa armigera and other lepidopteran pests. However, it also may impact the invertebrate community, which needs to be clarified. The effects of Bt cotton on two nontarget insects, Aphis gossypii and Orius sauteri, were assessed under semifield and laboratory conditions. Mean total duration of nymphal stages of A. gossypii was shorter (5.9 versus 6.3 d), and rm was higher (0.418 versus 0.394) on conventional Simian 3 (the most frequently planted non-Bt cotton in northern China) than on Bt transgenic NuCOTN 33B (the first Bt cotton commercially planted in China). Mean duration of fourth-instar O. sauteri was significantly longer on transgenic GK-12 (3.7 d) than on NuCOTN 33B (3.2 d), but no different from Simian 3. Mean total mortality was significantly lower on Simian 3 (3.7%) than on GK-12 (14.8%). During the fourth instar, the predator consumed a significantly higher number of prey on Simian 3 (202.3 prey) than on NuCOTN 33B (159.0), whereas the mean total number of A. gossypii prey consumed during the nymphal stage was significantly higher on Simian 3 (336.8 prey) and GK-12 (330.3 prey) than on NuCOTN 33B (275.7). No detrimental effects were detected on development (nymphs, adults, and progeny eggs), fecundity, longevity, and egg viability of O. sauteri on Bt cotton aphids compared with non-Bt cotton aphids. These results suggest that Bt cotton cultivars GK-12 and NuCOTN 33B have no direct effect on nontargets A. gossypii and O. sauteri. Germplasm divergence may account for the negative effects observed on A. gossypii and O. sauteri when reared on NuCOTN 33B or NuCOTN 33B-fed aphids. The biological meanings of the small difference observed between GK-12 and Simian 3 on survival of O. sauteri will require close monitoring over longer time periods.

Keywords

transgenic Bt cotton; Aphis gossypii; Orius sauteri; nontarget effects; tri-trophic interactions

Funding

Funding source
  • Chinese Ministry of Science and Technology
  • China Natural Science Foundation Project
  • European Commission
Funding country
  • China
  • EU
Funding type
  • government

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Cite this study

MLA

Zhang, AG, FH Wan, ST Murphy, JY Guo, WX Liu. "Reproductive Biology of Two Nontarget Insect Species, Aphis gossypii (Homoptera: Aphididae) and Orius sauteri (Hemiptera: Anthocoridae), on Bt and non-Bt Cotton Cultivars." Environmental Entomology 37.4 (2008): 1035-1042. Web. 13 Dec. 2018.

APA

Zhang, AG., Wan, FH., Murphy, ST., Guo, JY., & Liu, WX. (2008). Reproductive Biology of Two Nontarget Insect Species, Aphis gossypii (Homoptera: Aphididae) and Orius sauteri (Hemiptera: Anthocoridae), on Bt and non-Bt Cotton Cultivars. Environmental Entomology, 37(4), 1035-1042. doi:10.1603/0046-225X(2008)37[1035:RBOTNI]2.0.CO;2

Please verify citations before use, citations are automatically generated based on information stored within the GENERA database and therefore may or may not be correct.