About the Authors
- Christopher A. Mullin, Maryann Frazier, James L. Frazier, Sara Ashcraft
- Department of Entomology, The Pennsylvania State University, University Park, Pennsylvania, United States of America
- Roger Simonds
- National Science Laboratory, United States Department of Agriculture - Agricultural Marketing Service, Gastonia, North Carolina, United States of America
- Dennis vanEngelsdorp
- Pennsylvania Department of Agriculture, Harrisburg, Pennsylvania, United States of America
- Jeffery S. Pettis
- Bee Research Laboratory, United States Department of Agriculture - Agricultural Research Service, Beltsville, Maryland, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: CAM MF JF Dv JSP. Performed the experiments: CAM MF SA RS. Analyzed the data: CAM. Contributed reagents/materials/analysis tools: CAM SA RS Dv JSP. Wrote the paper: CAM MF JF.