Location: Beneficial Insects Introduction Research
Project Number: 8010-22000-028-05-I
Project Type: Interagency Reimbursable Agreement
Start Date: Jul 1, 2013
End Date: Jun 30, 2016
To assess the establishment and impact of exotic and indigenous natural enemies on EAB populations in Maryland. Specifically, we will (1) establish at least three parasitoid release / research sites; (2) determine the establishment and dispersal of released parasitoids at each of the release sites via general surveys; and (3) quantify EAB egg and larval survival and mortality factors via life table analyses using 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 three 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 PLANIPENISI, 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 USDA 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.