Date Available
11-19-2015
Year of Publication
2015
Degree Name
Master of Science (MS)
Document Type
Master's Thesis
College
Agriculture, Food and Environment
Department/School/Program
Entomology
First Advisor
Dr. Lynne Rieske-Kinney
Abstract
Emerald ash borer, Agrilus planipennis Fairmaire, is an invasive wood boring beetle native to eastern Asia which was first detected in North America in 2002. All North American Fraxinus (ash) species are suitable hosts and susceptible to attack. Emerald ash borer larvae feed on phloem beneath the bark of infested trees resulting in girdling and mortality in as little as five years following initial infestation. Since its introduction near Detroit, Michigan, emerald ash borer has rapidly spread throughout much of the United States and portions of Canada, threatening the persistence of ash in invaded regions.
I tested a management strategy for emerald ash borer which combines pesticide applications with releases of three species of classical biological control agents: Tetrastichus planipennisi, Spathius agrili, and Oobius agrili. My data suggest that the two approaches are compatible and pesticides did not negatively impact establishment success of T. planipennisi and O. agrili.
Additionally, I characterized the assemblage of natural enemies native to the central United States that might be capable of helping regulate emerald ash borer populations, and found twelve morpho-species of natural enemies being recruited to emerald ash borer in this region. Finally, I evaluated the impact of ash decline on native hymenopteran parasitoids and found a positive correlation between ash decline and parasitoid abundance.
Recommended Citation
Davidson, William C., "Developing a Sustainable Approach to Emerald Ash Borer Management" (2015). Theses and Dissertations--Entomology. 21.
https://uknowledge.uky.edu/entomology_etds/21
