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Parasitoids attacking emerald ash borers in western Pennsylvania and their potential use in biological control
Current biological control programs against the emerald ash borer (EAB, Agrilus planipennis Fairmaire) have primarily focused on the introduction and releases of exotic parasitoids from China, home of the pest origin. However, recent field surveys in Michigan indicate that some North American native or extant parasitoids have become associated with EAB and play some role in suppressing the local populations of EAB. The objective of the present study is twofold: (1) to investigate if any extant parasitoid guilds have become associated with emerald ash borers in western Pennsylvania, where the pest was first discovered in 2007; and (2) to study the most abundant parasitoid for future development of augmentative biological control programs against EAB.