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Assessment of risk of insect-resistant transgenic crops to nontarget arthropods
An international initiative is developing a scientifically rigorous approach to evaluate the potential risks to nontarget arthropods (NTAs) posed by insect-resistant, genetically modified (IRGM)Expand
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Corn pollen deposition on milkweeds in and near cornfields
The density of corn pollen on leaves of milkweed plants inside and outside of cornfields was measured in several studies from different localities. The purpose was to obtain a representative pictureExpand
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Temporal and spatial overlap between monarch larvae and corn pollen
To assess the likelihood that monarch larvae will be exposed to Bacillus thuringiensis (Bt) pollen, we studied milkweed and monarch densities in habitats which comprise much of the land available toExpand
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Effects on Monarch Butterfly Larvae (Lepidoptera: Danaidae) After Continuous Exposure to Cry1Ab-Expressing Corn During Anthesis
Abstract Effects on monarch butterfly, Danaus plexippus L., after continuous exposure of larvae to natural deposits of Bacillus thuringiensis (Bt) and non-Bt pollen on milkweed, were measured in fiveExpand
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Assessing the impact of Cry1Ab-expressing corn pollen on monarch butterfly larvae in field studies
Survival and growth of monarch larvae, Danaus plexippus (L.), after exposure to either Cry1Ab-expressing pollen from three Bacillus thuringiensis (Bt) corn (Zea mays L.) events differing in toxinExpand
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Role of Visual and Olfactory Cues from Agricultural Hedgerows in the Orientation Behavior of Multicolored Asian Lady Beetle (Coleoptera: Coccinellidae)
Abstract Harmonia axyridis Pallas is an introduced lady beetle common in eastern North American agroecosystems. Two-choice behavioral bioassays were performed to determine whether visual andExpand
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Problem formulation in the environmental risk assessment for genetically modified plants
Problem formulation is the first step in environmental risk assessment (ERA) where policy goals, scope, assessment endpoints, and methodology are distilled to an explicitly stated problem andExpand
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Persistence, distribution and dislodgeable residues of 2, 4‐d following its application to turfgrass
In growth room studies, total recoverable 2, 4-D residues on or in turfgrass (Kentucky bluegrass, Poa pratensis) declined from 92% of that originally applied, to less than 66% by day 15. Although aExpand
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Effects of Cry1Ab-Expressing Corn Anthers on Monarch Butterfly Larvae
Abstract Previous studies suggest that exposure to corn, Zea mays L., anthers expressing Bacillus thuringiensis (Bt)-derived protein may have adverse effects on the larvae of monarch butterfly,Expand
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Decline of Soybean Aphid (Homoptera: Aphididae) Egg Populations from Autumn to Spring on the Primary Host, Rhamnus cathartica
Abstract Soybean aphid, Aphis glycines Matsumura (Homoptera: Aphididae), is a severe pest of soybeans in North America. Soybean aphid populations cycle between a secondary summer host, whereExpand
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