1a.Objectives (from AD-416):
(1) Complete sampling of all ash trees previously girdled under the previous agreement (58-1926-7-104F) for emerald ash borer natural enemies
(2) Complete data analysis and final report on work specified under previous agreement (58-1926-7-104E)
1b.Approach (from AD-416):
Investigate natural enemies of emerald ash borers on girdled ash trees in Russia at several suitable study sites determined from the previous study. Inventory and
collect natural enemies attacking the target pest, assess role in population
dynamics of pest, set priorities for importation, and ship promising species to
Newark for further study. Monitor and sample selected sites intensively to
determine the role of natural enemies in population dynamics. Hand carry or ship
by air freight, natural enemies to U.S.
Visited the study sites in Vladivostok, Russia and sampled emerald ash borer (EAB) populations and associated parasitoids on both green and oriental ash trees girdled in spring of 2011. Approximately a total of 200 cocoons of Spathius galinae (a larval EAB parasitoid) and 50 cocoons of Atanycolus nigriventris (EAB larval parasitoid) were collected from this trip. We also collected approximately a dozen of EAB egg parasitoid Oobius sp. from this trip. All the collected parasitoids were imported to the USDA ARS BIIR quarantine facility, and are currently being evaluated for potential releases against EAB in the United States.