Project Number: 6204-21000-010-03
Start Date: Jul 15, 2008
End Date: Jul 14, 2013
A new apiary will be established to conduct Grand Experiment study described in "Biotic threats" section. Thirty honey bee colonies will be maintained at Weslaco, TX, site by the Research Unit personnel. Bee samples will be collected bi-weekly and stored in -80 C; pollen samples will be collected on a monthly basis and shipped to collaborators for pesticide residue analysis. Cage Experiment: Nosema ceranae infection study will be conducted in Weslaco in collaboration with Dr. Webster, Kentucky State University. Bees will be infected with different biotypes of N. ceranae in cages. Honey bee samples will be collected at the different stages as the disease progresses to determine the differential gene expression in response to infection. Bee samples collected from the cage infection study will be analyzed using quantitative PCR (qRT-PCR) to estimate the differences in the level of bee immune responses between Nosema-infected and healthy bees. Infection of bees with N. cerana will be confirmed using DNA-base method and microscopic observation of the dissected bees. Dipstick assay: We propose to develop a highly sensitive dipstick test for detection of Nosema infection in bee colonies. The test is based on the antibodies of N. ceranae raised in small animals, and it will be able to detect Nosema antigen in honey bee samples. A dipstick assay will be evaluated and optimized on honey bee samples collected in six different locations in the U.S. Production and marketing of the dipsticks is not included in the scope of this study.