Occurrence of Danaus plexippus L. (Lepidoptera: Danaidae) on milkweeds (Asclepias syriaca) in transgenic Bt corn agroecosystems

Laura C.H. Jesse; John J. Obrycki

doi:10.1016/S0167-8809(03)00124-5

Occurrence of Danaus plexippus L. (Lepidoptera: Danaidae) on milkweeds (Asclepias syriaca) in transgenic Bt corn agroecosystems

Laura C.H. Jesse, John J. Obrycki

Entomology

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

Abstract

The potential negative effects of transgenic Bt corn on the monarch butterfly, Danaus plexippus, requires quantification of the presence of D. plexippus in the field and of the effect of Bt corn tissues on oviposition and larval survival. During a 2-year field study, D. plexippus females laid similar number of eggs on Asclepias syriaca in corn fields and on A. syriaca growing in roadside habitats parallel to corn fields. In 1999 and 2000 similar number of D. plexippus larvae were observed on A. syriaca in corn fields and roadside habitats, whereas a greater proportion of A. syriaca in corn fields were infested by at least one D. plexippus larva in 2000. Similar number of eggs were laid in transgenic Bt and non-Bt corn fields, indicating that females did not avoid leaves dusted with anthers and 6-72 Bt pollen grains/cm². Similar number of D. plexippus larvae were found in and near Bt corn fields compared to non-Bt corn fields following corn anthesis. In 2000, transgenic Event MON810 Bt corn pollen and anthers had no measurable effects on D. plexippus oviposition or larval survival.

Original language	English
Pages (from-to)	225-233
Number of pages	9
Journal	Agriculture, Ecosystems and Environment
Volume	97
Issue number	1-3
DOIs	https://doi.org/10.1016/S0167-8809(03)00124-5
State	Published - Jul 2003

Bibliographical note

Funding Information:
We would like to thank Loren Handland, Steve Johnson, Kevin Peterson, and Ronald Stensland for allowing us to conduct this survey on their farms, and Kari Jovaag, Department of Statistics, Iowa State University, for assistance with statistical analysis. Funds for this research were provided by the Leopold Center for Sustainable Agriculture, Ames, IA, and the USDA Monarch/Bt Corn competitive grants program. Laura Jesse was supported by an Environmental Protection Agency STAR Fellowship. This is journal paper no. J-19282 of the Iowa Agriculture and Home Economics Experiment Station, Ames, IA. Project no. 3437, and supported by Hatch Act and State of Iowa funds.

Keywords

Asclepias syriaca
Bt corn
Danaus plexippus
Risk assessment
Transgenic insecticidal crop

ASJC Scopus subject areas

Ecology
Animal Science and Zoology
Agronomy and Crop Science

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10.1016/S0167-8809(03)00124-5

Cite this

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title = "Occurrence of Danaus plexippus L. (Lepidoptera: Danaidae) on milkweeds (Asclepias syriaca) in transgenic Bt corn agroecosystems",

abstract = "The potential negative effects of transgenic Bt corn on the monarch butterfly, Danaus plexippus, requires quantification of the presence of D. plexippus in the field and of the effect of Bt corn tissues on oviposition and larval survival. During a 2-year field study, D. plexippus females laid similar number of eggs on Asclepias syriaca in corn fields and on A. syriaca growing in roadside habitats parallel to corn fields. In 1999 and 2000 similar number of D. plexippus larvae were observed on A. syriaca in corn fields and roadside habitats, whereas a greater proportion of A. syriaca in corn fields were infested by at least one D. plexippus larva in 2000. Similar number of eggs were laid in transgenic Bt and non-Bt corn fields, indicating that females did not avoid leaves dusted with anthers and 6-72 Bt pollen grains/cm2. Similar number of D. plexippus larvae were found in and near Bt corn fields compared to non-Bt corn fields following corn anthesis. In 2000, transgenic Event MON810 Bt corn pollen and anthers had no measurable effects on D. plexippus oviposition or larval survival.",

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author = "Jesse, {Laura C.H.} and Obrycki, {John J.}",

note = "Funding Information: We would like to thank Loren Handland, Steve Johnson, Kevin Peterson, and Ronald Stensland for allowing us to conduct this survey on their farms, and Kari Jovaag, Department of Statistics, Iowa State University, for assistance with statistical analysis. Funds for this research were provided by the Leopold Center for Sustainable Agriculture, Ames, IA, and the USDA Monarch/Bt Corn competitive grants program. Laura Jesse was supported by an Environmental Protection Agency STAR Fellowship. This is journal paper no. J-19282 of the Iowa Agriculture and Home Economics Experiment Station, Ames, IA. Project no. 3437, and supported by Hatch Act and State of Iowa funds.",

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N1 - Funding Information: We would like to thank Loren Handland, Steve Johnson, Kevin Peterson, and Ronald Stensland for allowing us to conduct this survey on their farms, and Kari Jovaag, Department of Statistics, Iowa State University, for assistance with statistical analysis. Funds for this research were provided by the Leopold Center for Sustainable Agriculture, Ames, IA, and the USDA Monarch/Bt Corn competitive grants program. Laura Jesse was supported by an Environmental Protection Agency STAR Fellowship. This is journal paper no. J-19282 of the Iowa Agriculture and Home Economics Experiment Station, Ames, IA. Project no. 3437, and supported by Hatch Act and State of Iowa funds.

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ER -

Occurrence of Danaus plexippus L. (Lepidoptera: Danaidae) on milkweeds (Asclepias syriaca) in transgenic Bt corn agroecosystems

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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