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United States Department of Agriculture

Agricultural Research Service

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Research Project: Evaluating Impacts of Indigenous and Introduced Parasitoids on Populations of the Invasive Emerald Ash Borer, Agrilus Planipennis Fairmaire

Location: Beneficial Insects Introduction Research

Project Number: 8010-22000-028-07-S
Project Type: Non-Assistance Cooperative Agreement

Start Date: Jul 30, 2011
End Date: Jul 29, 2016

To assess the establishment and impact of exotic and indigenous parasitoids on EAB populations in Maryland. 1. Establishment of at least four parasitoid release / research sites. 2. Determine the establishment and dispersal of released parasitoids at each of the release sites via general surveys. 3. Quantify EAB egg and larval survival and mortality factors via experimentally established cohorts and wild EAB populations.

Evaluations of egg and larval survival and mortality factors will be based on EAB life tables developed from marked cohorts of eggs and larvae on common American ash trees at a minimum of four field sites in natural forests, where some indigenous parasitoids may have become associated with EAB, and the three introduced Chinese parasitoids (Oobius agrili, Tetrastichus planipennisi, Spathius agrili) either have already been released or will be released in the first year of the study. Naturally occurring native species (if any) in each of the study sites will be treated as sequential and/or contemporary factors inflicting mortality of EAB along with the previously introduced Chinese parasitoids. If work from associated EAB projects leads to successful discovery and introduction of new species of parasitoids from Russia and/or China, these species will be introduced and then included in the evaluation studies.

Last Modified: 10/15/2017
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