Publication Date
2020
Document Type
Thesis
Committee Members
Don Cipollini, Ph.D. (Advisor); Lisa Kenyon, Ed.D. (Committee Member); John Stireman, Ph.D. (Committee Member)
Degree Name
Master of Science (MS)
Abstract
Ornamental white fringetrees in IL, IN, OH, and PA were reassessed in 2018 as a follow-up study to determine the fate of the white fringetree through the invasion wave of emerald ash borer. Attack rates decline by half from 2015-2018 and only 13% of trees were infested. Health of not reinfested trees in 2018 improved suggesting resilience against EAB attack whereas currently infested trees in 2018 displayed signs of declining health. Trees differed in their resistance to EAB attack and 41 additional ornamental and wild white fringetrees were studied in OH to determine if the anti-herbivory defense chemical, oleuropein, influenced EAB larval performance. Due to low attack rates and tolerance to EAB attack, white fringetrees are likely going to survive the invasion wave. Oleuropein concentrations were not correlated to larval performance, but oleuropein concentrations were higher in uninfested and ornamental trees suggesting genotypic and phenotypic variation among white fringetree genotypes.
Page Count
65
Department or Program
Department of Biological Sciences
Year Degree Awarded
2020
Copyright
Copyright 2020, all rights reserved. My ETD will be available under the "Fair Use" terms of copyright law.
