Oregon State University

Awards Issued Prior to January 20, 2025, Were Funded Under Previous Administrations and May Not Reflect the Priorities and Policies of the Current Administration. European Foulbrood (efb), a Disease That Infects Honey Bee Larvae and Causes Significant Mortality, Has Recently Increased in Prevalence and Intensity. High Incidences Are Associated With Pollination of Early Season Specialty Crops, Which Reduces Efficiency in Pollination of Specialty Crops That Bloom Later in the Season. This Project Uses a Systemand Transdisciplinary Based Approach to Identify Factors Associated With Efb, Develop Strategies to Mitigate Its Spread and Impacts, and Communicate Findings to Beekeepers and Growers of Diverse Specialty Crops. the Objectives of This Study Are: (1) Determine Factors Associated With EFB(2) Evaluate Methods to Mitigate EFB(3) Investigate the Genetic Variation of the Pathogen Population and Identify Potential Pathways for Disease SPREAD(4) Develop Economic Models on the Impact, and (5) Develop Management Practices and Communicate Findings. Central to This Project Is a Two Year Long Longitudinal Study Involving Honey Bee Colonies Across Four States That Will Be Used to Pollinate Diverse Crops. the Project Will Model the Effects of Crops, Weather Conditions, Pesticides, Honey Bee Health, and Others on Efb. This Project Will Also Use Methods in Microbiome Science and Genomics to Determine the Efficacy of Probiotics and Trace Pathogen Movement, Respectively, as Well as Evaluate Other Management Strategies. Findings, Along With Results From Economic Analyses Will Be Disseminated Broadly via a Diversity of Outreach and Extension Mechanisms, Including Youtube Videos and Podcasts.