Toxins in transgenic crop byproducts may affect headwater stream ecosystems

E. J. Rosi-Marshall; J. L. Tank; T. V. Royer; M. R. Whiles; M. Evans-White; C. Chambers; N. A. Griffiths; J. Pokelsek; M. L. Stephen

doi:10.1073/pnas.0707177104

Toxins in transgenic crop byproducts may affect headwater stream ecosystems

E. J. Rosi-Marshall, J. L. Tank, T. V. Royer, M. R. Whiles, M. Evans-White, C. Chambers, N. A. Griffiths, J. Pokelsek, M. L. Stephen

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

221 Scopus citations

Abstract

Corn (Zea mays L.) that has been genetically engineered to produce the Cry1Ab protein (Bt corn) is resistant to lepidopteran pests. Bt corn is widely planted in the midwestern United States, often adjacent to headwater streams. We show that corn byproducts, such as pollen and detritus, enter headwater streams and are subject to storage, consumption, and transport to downstream water bodies. Laboratory feeding trials showed that consumption of Bt corn byproducts reduced growth and increased mortality of nontarget stream insects. Stream insects are important prey for aquatic and riparian predators, and widespread planting of Bt crops has unexpected ecosystem-scale consequences.

Original language	English
Pages (from-to)	16204-16208
Number of pages	5
Journal	Proceedings of the National Academy of Sciences of the United States of America
Volume	104
Issue number	41
DOIs	https://doi.org/10.1073/pnas.0707177104
State	Published - Oct 9 2007
Externally published	Yes

Keywords

Caddisflies
Genetically modified crops

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1073/pnas.0707177104

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Rosi-Marshall, E. J., Tank, J. L., Royer, T. V., Whiles, M. R., Evans-White, M., Chambers, C., Griffiths, N. A., Pokelsek, J., & Stephen, M. L. (2007). Toxins in transgenic crop byproducts may affect headwater stream ecosystems. Proceedings of the National Academy of Sciences of the United States of America, 104(41), 16204-16208. https://doi.org/10.1073/pnas.0707177104

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abstract = "Corn (Zea mays L.) that has been genetically engineered to produce the Cry1Ab protein (Bt corn) is resistant to lepidopteran pests. Bt corn is widely planted in the midwestern United States, often adjacent to headwater streams. We show that corn byproducts, such as pollen and detritus, enter headwater streams and are subject to storage, consumption, and transport to downstream water bodies. Laboratory feeding trials showed that consumption of Bt corn byproducts reduced growth and increased mortality of nontarget stream insects. Stream insects are important prey for aquatic and riparian predators, and widespread planting of Bt crops has unexpected ecosystem-scale consequences.",

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AU - Rosi-Marshall, E. J.

AU - Tank, J. L.

AU - Royer, T. V.

AU - Whiles, M. R.

AU - Evans-White, M.

AU - Chambers, C.

AU - Griffiths, N. A.

AU - Pokelsek, J.

AU - Stephen, M. L.

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AB - Corn (Zea mays L.) that has been genetically engineered to produce the Cry1Ab protein (Bt corn) is resistant to lepidopteran pests. Bt corn is widely planted in the midwestern United States, often adjacent to headwater streams. We show that corn byproducts, such as pollen and detritus, enter headwater streams and are subject to storage, consumption, and transport to downstream water bodies. Laboratory feeding trials showed that consumption of Bt corn byproducts reduced growth and increased mortality of nontarget stream insects. Stream insects are important prey for aquatic and riparian predators, and widespread planting of Bt crops has unexpected ecosystem-scale consequences.

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Toxins in transgenic crop byproducts may affect headwater stream ecosystems

Abstract

Keywords

UN SDGs

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