Canadian Forest Service Publications

The effect of host condition on adult emerald ash borer (Agrilus planipennis) performance. 2019. MacQuarrie, C.J.K. Forestry: An International Journal of Forest Research: 10.1093/forestry/cpz008.

Year: 2019

Issued by: Great Lakes Forestry Centre

Catalog ID: 39779

Language: English

Availability: PDF (request by e-mail)

Available from the Journal's Web site.
DOI: 10.1093/forestry/cpz008

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Plain Language Summary

This study describes the results of field and lab experiments testing the how the health of an ash tree influences the condition of adult emerald ash borer (EAB) that develop within it. This is a scientific journal article. The authors collected adult EAB from infested trees and caged these insects on healthy trees, some of which had been damaged to simulate trees that were in poor health. These caged EAB adults laid eggs on the healthy trees, which were then cut down and their offspring were collected. These offspring were then housed in the lab, mated to other insects and allowed to lay eggs. The number of EAB adults that emerged, how long they lived and how many eggs were produced was compared for insects that emerged from healthy trees, and from damaged trees. The results showed that more insects emerged from damaged trees, that they were slightly larger but did not live as long. However, these effects were not strong and it appears that performance of insects on healthy trees is similar to the performance of insects on damaged trees. This finding has applications in how we predict how EAB populations grow during different phases of an outbreak or new infestation where trees may be declining in condition.