About the Authors
- Dennis vanEngelsdorp
- Pennsylvania Department of Agriculture, Bureau of Plant Industry–Apiculture, Harrisburg, Pennsylvania, United States of America
- Dennis vanEngelsdorp, Robyn M. Underwood
- Department of Entomology, The Pennsylvania State University, University Park, Pennsylvania, United States of America
- Jerry Hayes Jr.
- Florida Department of Agriculture, Bureau of Plant and Apiary Inspection, Apiary Inspection Section, Division of Plant Industry, Gainesville, Florida, United States of America
- Jeffery Pettis
- United States Department of Agriculture (USDA)–ARS Bee Research Laboratory, Beltsville, Maryland, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: Dv JHJ JP. Performed the experiments: JHJ RMU JP. Analyzed the data: Dv RMU. Contributed reagents/materials/analysis tools: Dv. Wrote the paper: Dv JHJ RMU JP.