Details
| Original language | English |
|---|---|
| Pages (from-to) | 87-99 |
| Number of pages | 13 |
| Journal | Environmental Biosafety Research |
| Volume | 9 |
| Issue number | 2 |
| Publication status | Published - 3 Feb 2011 |
Abstract
Auchenorrhyncha (planthoppers and leafhoppers) are herbivorous organisms that can ingest Cry proteins from genetically engineered Bt-crops depending on their feeding behaviour. Consequently, they might be directly affected by non-target Bt-protein action and more importantly serve as a source of Cry protein exposure to beneficial predatory arthropods. During a three year field study, we surveyed the community of Auchenorrhyncha in Diabrotica-resistant Bt-maize DKc5143-Bt (event MON88017), its near-isogenic line and two conventional hybrids using sweep netting and custom made sticky traps. Zyginidia scutellaris (Herrich-Schäffer) (Hemiptera: Cicadellidae) representedmore than 60% of all captured individuals, indicating that it is the dominant leafhopper within the maize community. The statistical analysis of Z. scutellaris data using confidence intervals for the ratios of mean abundance showed no consistent differences between the Bt-maize and the near-isogenic cultivar, indicating no negative impact of event MON88017. The two conventional hybrids Benicia and DK315 exhibited differences in terms of Z. scutellaris densities, which were greater than those observed between MON88017 and the near-isogenic line, but also not consistent over the years. Six more species accounted for an additional 39% of all captured specimens, while ten more species were found only as single individuals and can be considered vagrants from neighbouring habitats. These results inform future field work on the non-target impact of Bt-maize on this group of arthropods and monitoring approaches to assess biological control function by surveying herbivore communities.
Keywords
- Bt-maize, environmental risk assessment, MON88017, non-target organisms, zyginidia scutellaris
ASJC Scopus subject areas
- Biochemistry, Genetics and Molecular Biology(all)
- Biotechnology
- Engineering(all)
- Biomedical Engineering
- Engineering(all)
- Safety, Risk, Reliability and Quality
- Environmental Science(all)
- Agricultural and Biological Sciences(all)
- Social Sciences(all)
- Safety Research
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: Environmental Biosafety Research, Vol. 9, No. 2, 03.02.2011, p. 87-99.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Diabrotica-resistant Bt-maize DKc5143 event MON88017 has no impact on the field densities of the leafhopper Zyginidia scutellaris
AU - Rauschen, Stefan
AU - Schultheis, Eva
AU - Hunfeld, Heinz
AU - Schaarschmidt, Frank
AU - Schuphan, Ingolf
AU - Eber, Sabine
PY - 2011/2/3
Y1 - 2011/2/3
N2 - Auchenorrhyncha (planthoppers and leafhoppers) are herbivorous organisms that can ingest Cry proteins from genetically engineered Bt-crops depending on their feeding behaviour. Consequently, they might be directly affected by non-target Bt-protein action and more importantly serve as a source of Cry protein exposure to beneficial predatory arthropods. During a three year field study, we surveyed the community of Auchenorrhyncha in Diabrotica-resistant Bt-maize DKc5143-Bt (event MON88017), its near-isogenic line and two conventional hybrids using sweep netting and custom made sticky traps. Zyginidia scutellaris (Herrich-Schäffer) (Hemiptera: Cicadellidae) representedmore than 60% of all captured individuals, indicating that it is the dominant leafhopper within the maize community. The statistical analysis of Z. scutellaris data using confidence intervals for the ratios of mean abundance showed no consistent differences between the Bt-maize and the near-isogenic cultivar, indicating no negative impact of event MON88017. The two conventional hybrids Benicia and DK315 exhibited differences in terms of Z. scutellaris densities, which were greater than those observed between MON88017 and the near-isogenic line, but also not consistent over the years. Six more species accounted for an additional 39% of all captured specimens, while ten more species were found only as single individuals and can be considered vagrants from neighbouring habitats. These results inform future field work on the non-target impact of Bt-maize on this group of arthropods and monitoring approaches to assess biological control function by surveying herbivore communities.
AB - Auchenorrhyncha (planthoppers and leafhoppers) are herbivorous organisms that can ingest Cry proteins from genetically engineered Bt-crops depending on their feeding behaviour. Consequently, they might be directly affected by non-target Bt-protein action and more importantly serve as a source of Cry protein exposure to beneficial predatory arthropods. During a three year field study, we surveyed the community of Auchenorrhyncha in Diabrotica-resistant Bt-maize DKc5143-Bt (event MON88017), its near-isogenic line and two conventional hybrids using sweep netting and custom made sticky traps. Zyginidia scutellaris (Herrich-Schäffer) (Hemiptera: Cicadellidae) representedmore than 60% of all captured individuals, indicating that it is the dominant leafhopper within the maize community. The statistical analysis of Z. scutellaris data using confidence intervals for the ratios of mean abundance showed no consistent differences between the Bt-maize and the near-isogenic cultivar, indicating no negative impact of event MON88017. The two conventional hybrids Benicia and DK315 exhibited differences in terms of Z. scutellaris densities, which were greater than those observed between MON88017 and the near-isogenic line, but also not consistent over the years. Six more species accounted for an additional 39% of all captured specimens, while ten more species were found only as single individuals and can be considered vagrants from neighbouring habitats. These results inform future field work on the non-target impact of Bt-maize on this group of arthropods and monitoring approaches to assess biological control function by surveying herbivore communities.
KW - Bt-maize
KW - environmental risk assessment
KW - MON88017
KW - non-target organisms
KW - zyginidia scutellaris
UR - http://www.scopus.com/inward/record.url?scp=79551700863&partnerID=8YFLogxK
U2 - 10.1051/ebr/2010012
DO - 10.1051/ebr/2010012
M3 - Article
C2 - 21288464
AN - SCOPUS:79551700863
VL - 9
SP - 87
EP - 99
JO - Environmental Biosafety Research
JF - Environmental Biosafety Research
SN - 1635-7922
IS - 2
ER -