Details
| Original language | English |
|---|---|
| Pages (from-to) | 331-339 |
| Number of pages | 9 |
| Journal | Agricultural and Forest Entomology |
| Volume | 10 |
| Issue number | 4 |
| Early online date | 10 Oct 2008 |
| Publication status | Published - Nov 2008 |
Abstract
1: Auchenorrhyncha (Planthoppers and Leafhoppers) are not only pests of many crops, but they are also nontarget organisms with respect to Bt-protein expressing genetically modified plants. As herbivorous arthropods, planthoppers and leafhoppers ingest Cry proteins depending on their feeding behaviour. Consequently, they are directly exposed to these entomotoxic proteins and can also serve as a source of Cry protein exposure to predatory arthropods. Therefore, it is reasonable to use Auchenorrhyncha in the risk assessment of genetically modified crops. 2: During a 2-year field study, we evaluated four different methods in terms of their feasibility to assess the impacts of plant-incorporated protectants from Bt-maize and of insecticide use on this group of arthropods. Visual assessment of plants, sweep netting, yellow traps and custom made sticky traps were utilized in field plots of Bt-maize MON810, untreated near-isogenic maize and insecticide-treated near-isogenic maize and were compared with respect to their capability to reflect the diversity and abundance of Auchenorrhyncha species. 3: Zyginidia scutellaris (Herrich-Schäffer) (Cicadomorpha: Cicadellidae) represented more than 94% of all captured individuals in both years. The analysis of Z. scutellaris data showed no consistent differences between Bt-maize MON810 and the untreated near isogenic hybrid, demonstrating no negative impact of MON810 on this species. Insecticide treatment, on the other hand, was not equivalent to the isogenic maize in terms of Z. scutellaris densities. Based on the collected data and on practical considerations, we recommend the combined use of transect-wise sweep netting and sticky traps for the sampling of Auchenorrhyncha in maize.
Keywords
- Bt-maize, Insecticide effect, MON810, Nontarget organisms, Zyginidia scutellaris
ASJC Scopus subject areas
- Agricultural and Biological Sciences(all)
- Forestry
- Agricultural and Biological Sciences(all)
- Agronomy and Crop Science
- Agricultural and Biological Sciences(all)
- Insect Science
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In: Agricultural and Forest Entomology, Vol. 10, No. 4, 11.2008, p. 331-339.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - An evaluation of methods for assessing the impacts of Bt-maize MON810 cultivation and pyrethroid insecticide use on Auchenorrhyncha (planthoppers and leafhoppers)
AU - Rauschen, Stefan
AU - Eckert, Jörg
AU - Schaarschmidt, Frank
AU - Schuphan, Ingolf
AU - Gathmann, Achim
PY - 2008/11
Y1 - 2008/11
N2 - 1: Auchenorrhyncha (Planthoppers and Leafhoppers) are not only pests of many crops, but they are also nontarget organisms with respect to Bt-protein expressing genetically modified plants. As herbivorous arthropods, planthoppers and leafhoppers ingest Cry proteins depending on their feeding behaviour. Consequently, they are directly exposed to these entomotoxic proteins and can also serve as a source of Cry protein exposure to predatory arthropods. Therefore, it is reasonable to use Auchenorrhyncha in the risk assessment of genetically modified crops. 2: During a 2-year field study, we evaluated four different methods in terms of their feasibility to assess the impacts of plant-incorporated protectants from Bt-maize and of insecticide use on this group of arthropods. Visual assessment of plants, sweep netting, yellow traps and custom made sticky traps were utilized in field plots of Bt-maize MON810, untreated near-isogenic maize and insecticide-treated near-isogenic maize and were compared with respect to their capability to reflect the diversity and abundance of Auchenorrhyncha species. 3: Zyginidia scutellaris (Herrich-Schäffer) (Cicadomorpha: Cicadellidae) represented more than 94% of all captured individuals in both years. The analysis of Z. scutellaris data showed no consistent differences between Bt-maize MON810 and the untreated near isogenic hybrid, demonstrating no negative impact of MON810 on this species. Insecticide treatment, on the other hand, was not equivalent to the isogenic maize in terms of Z. scutellaris densities. Based on the collected data and on practical considerations, we recommend the combined use of transect-wise sweep netting and sticky traps for the sampling of Auchenorrhyncha in maize.
AB - 1: Auchenorrhyncha (Planthoppers and Leafhoppers) are not only pests of many crops, but they are also nontarget organisms with respect to Bt-protein expressing genetically modified plants. As herbivorous arthropods, planthoppers and leafhoppers ingest Cry proteins depending on their feeding behaviour. Consequently, they are directly exposed to these entomotoxic proteins and can also serve as a source of Cry protein exposure to predatory arthropods. Therefore, it is reasonable to use Auchenorrhyncha in the risk assessment of genetically modified crops. 2: During a 2-year field study, we evaluated four different methods in terms of their feasibility to assess the impacts of plant-incorporated protectants from Bt-maize and of insecticide use on this group of arthropods. Visual assessment of plants, sweep netting, yellow traps and custom made sticky traps were utilized in field plots of Bt-maize MON810, untreated near-isogenic maize and insecticide-treated near-isogenic maize and were compared with respect to their capability to reflect the diversity and abundance of Auchenorrhyncha species. 3: Zyginidia scutellaris (Herrich-Schäffer) (Cicadomorpha: Cicadellidae) represented more than 94% of all captured individuals in both years. The analysis of Z. scutellaris data showed no consistent differences between Bt-maize MON810 and the untreated near isogenic hybrid, demonstrating no negative impact of MON810 on this species. Insecticide treatment, on the other hand, was not equivalent to the isogenic maize in terms of Z. scutellaris densities. Based on the collected data and on practical considerations, we recommend the combined use of transect-wise sweep netting and sticky traps for the sampling of Auchenorrhyncha in maize.
KW - Bt-maize
KW - Insecticide effect
KW - MON810
KW - Nontarget organisms
KW - Zyginidia scutellaris
UR - http://www.scopus.com/inward/record.url?scp=53749086059&partnerID=8YFLogxK
U2 - 10.1111/j.1461-9563.2008.00394.x
DO - 10.1111/j.1461-9563.2008.00394.x
M3 - Article
AN - SCOPUS:53749086059
VL - 10
SP - 331
EP - 339
JO - Agricultural and Forest Entomology
JF - Agricultural and Forest Entomology
SN - 1461-9555
IS - 4
ER -