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Effects of Cry34/35Ab1 corn on the survival and development of western corn rootworm, Diabrotica virgifera virgifera.
Pest Manag Sci. 2013 Jun; 69(6):709-16.PM

Abstract

BACKGROUND

The western corn rootworm, Diabrotica virgifera virgifera LeConte, is a major agricultural pest that is managed with transgenic corn, Zea mays L., expressing genes from Bacillus thuringiensis Berliner (Bt). The effects of Bt corn producing Cry34/35Ab1 (event DAS-59122-7) and entomopathogens on the survival and development of larval D. v. virgifera were examined in laboratory, field and greenhouse experiments.

RESULTS

Larvae preferred non-Bt over Bt corn in a laboratory experiment, and there was higher recovery from non-Bt corn than from Bt corn in a field experiment. In a greenhouse study, survival at 17 days did not differ significantly among non-Bt corn, Bt corn and a blend of Bt and non-Bt corn, but development was delayed on Bt corn. Older larvae fed non-Bt corn had lower survival when entomopathogenic nematodes were added, but no other effects of pathogen were detected.

CONCLUSION

Bt corn producing Cry34/35Ab1 delayed larval development of D. v. virgifera and deterred feeding. In a mixture of Bt and non-Bt corn, larval development and survival were similar to non-Bt corn alone, suggesting that non-Bt plants in a blended refuge or a pure stand may produce a similar number of adult insects, and that timing of adult emergence may also be similar.

Authors+Show Affiliations

Entomology Department, Iowa State University, Ames, IA, USA. ryne0008@umn.eduNo affiliation info available

Pub Type(s)

Evaluation Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

23109348

Citation

Rudeen, Melissa L., and Aaron J. Gassmann. "Effects of Cry34/35Ab1 Corn On the Survival and Development of Western Corn Rootworm, Diabrotica Virgifera Virgifera." Pest Management Science, vol. 69, no. 6, 2013, pp. 709-16.
Rudeen ML, Gassmann AJ. Effects of Cry34/35Ab1 corn on the survival and development of western corn rootworm, Diabrotica virgifera virgifera. Pest Manag Sci. 2013;69(6):709-16.
Rudeen, M. L., & Gassmann, A. J. (2013). Effects of Cry34/35Ab1 corn on the survival and development of western corn rootworm, Diabrotica virgifera virgifera. Pest Management Science, 69(6), 709-16. https://doi.org/10.1002/ps.3425
Rudeen ML, Gassmann AJ. Effects of Cry34/35Ab1 Corn On the Survival and Development of Western Corn Rootworm, Diabrotica Virgifera Virgifera. Pest Manag Sci. 2013;69(6):709-16. PubMed PMID: 23109348.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effects of Cry34/35Ab1 corn on the survival and development of western corn rootworm, Diabrotica virgifera virgifera. AU - Rudeen,Melissa L, AU - Gassmann,Aaron J, Y1 - 2012/10/29/ PY - 2012/04/17/received PY - 2012/08/24/revised PY - 2012/09/19/accepted PY - 2012/10/31/entrez PY - 2012/10/31/pubmed PY - 2013/11/8/medline SP - 709 EP - 16 JF - Pest management science JO - Pest Manag Sci VL - 69 IS - 6 N2 - BACKGROUND: The western corn rootworm, Diabrotica virgifera virgifera LeConte, is a major agricultural pest that is managed with transgenic corn, Zea mays L., expressing genes from Bacillus thuringiensis Berliner (Bt). The effects of Bt corn producing Cry34/35Ab1 (event DAS-59122-7) and entomopathogens on the survival and development of larval D. v. virgifera were examined in laboratory, field and greenhouse experiments. RESULTS: Larvae preferred non-Bt over Bt corn in a laboratory experiment, and there was higher recovery from non-Bt corn than from Bt corn in a field experiment. In a greenhouse study, survival at 17 days did not differ significantly among non-Bt corn, Bt corn and a blend of Bt and non-Bt corn, but development was delayed on Bt corn. Older larvae fed non-Bt corn had lower survival when entomopathogenic nematodes were added, but no other effects of pathogen were detected. CONCLUSION: Bt corn producing Cry34/35Ab1 delayed larval development of D. v. virgifera and deterred feeding. In a mixture of Bt and non-Bt corn, larval development and survival were similar to non-Bt corn alone, suggesting that non-Bt plants in a blended refuge or a pure stand may produce a similar number of adult insects, and that timing of adult emergence may also be similar. SN - 1526-4998 UR - https://www.unboundmedicine.com/medline/citation/23109348/Effects_of_Cry34/35Ab1_corn_on_the_survival_and_development_of_western_corn_rootworm_Diabrotica_virgifera_virgifera_ L2 - https://doi.org/10.1002/ps.3425 DB - PRIME DP - Unbound Medicine ER -