Effects of Cry1Ab-Expressing Corn Anthers on the Movement of Monarch Butterfly Larvae
نویسندگان
چکیده
منابع مشابه
Effects of Cry1Ab-expressing corn anthers on the movement of monarch butterfly larvae.
Decreased larval feeding and weight of the monarch butterfly, Danaus plexippus L., have been detected after 4 d of exposure in the laboratory to a high density of Bacillus thuringiensis (Bt)-expressing anthers. One hypothesis is that larvae exposed to Bt anthers exhibit increased wandering, resulting in less feeding and lower weight gain. To test this hypothesis, 2-d-old monarch butterfly larva...
متن کاملTRANSGENIC PLANTS AND INSECTS Effects of Cry1Ab-Expressing Corn Anthers on the Movement of Monarch Butterfly Larvae
Decreased larval feeding and weight of the monarch butterßy, Danaus plexippus L., have been detected after 4 d of exposure in the laboratory to a high density of Bacillus thuringiensis (Bt)-expressing anthers. One hypothesis is that larvae exposed to Bt anthers exhibit increased wandering, resulting in less feeding and lower weight gain. To test this hypothesis, 2-d-old monarch butterßy larvaee...
متن کاملEffects on Fitness and Behavior of Monarch Butterfly Larvae Exposed to a Combination of Cry1Ab-Expressing Corn Anthers and Pollen
Anthers and pollen from corn, Zea mays L., expressing Bacillus thuringiensis (Bt)-derived protein frequently fall onto common milkweed, Asclepias syriaca L., growing in and near corn fields. Previous studies have shown that, alone, Bt anthers do not pose a significant risk to the monarch butterfly, Danaus plexippus L. To examine how exposure to a combination of Bt anthers and pollen affects lar...
متن کاملEffects on Monarch Butterfly Larvae (Lepidoptera: Danaidae) After Continuous Exposure to Cry1Ab-Expressing Corn During Anthesis
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 five studies. First instars were exposed at 3–4 and 6–7 d after initial anthesis, either directly on milkweed plants in commercial cornfields or in the laboratory on leaves collected from milkweeds in corn plots...
متن کاملAssessing 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 toxin expression or to the insecticide, lambda-cyhalothrin, were examined in field studies. First instars exposed to low doses ( approximately 22 grains per cm(2)) of event-176 pollen gained 18% less weight ...
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ژورنال
عنوان ژورنال: Environmental Entomology
سال: 2007
ISSN: 0046-225X,0046-225X
DOI: 10.1603/0046-225x(2007)36[228:eoccao]2.0.co;2