Temporal and spatial overlap between monarch larvae and corn pollen

@article{Oberhauser2001TemporalAS,
  title={Temporal and spatial overlap between monarch larvae and corn pollen},
  author={K. Oberhauser and M. D. Prysby and H. Mattila and D. Stanley-Horn and M. Sears and G. Dively and E. Olson and J. Pleasants and W. Lam and R. Hellmich},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  year={2001},
  volume={98},
  pages={11913 - 11918}
}
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 to breeding monarchs, e.g., cornfields, cornfield edges, other agricultural fields, and nonagricultural areas, in four regions of the monarch breeding range. We found that monarchs use milkweed in cornfields throughout their breeding season, and that per plant densities are as high or higher in… Expand
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