Florida Entomologist (2014) 97, 1263-1265

David E. Jennings, Jian J. Duan, Kristi M. Larson, Jonathan P. Lelito and Paula M. Shrewsbury (2014)
Evaluating a new method for monitoring the field establishment and parasitism of Oobius agrili (Hymenoptera: Encyrtidae), an egg parasitoid of emerald ash borer (Coleoptera: Buprestidae)
Florida Entomologist 97 (3), 1263-1265
Abstract: We tested 10 cm × 10 cm mesh egg-sentinel envelopes (ESEs) containing emerald ash borer eggs on filter paper, and assessed how 2 different mesh sizes (0.5 mm and 1 mm) affected parasitism by Oobius agrili in the laboratory, and parasitism and predation in the field. Mesh size significantly affected parasitism in the laboratory, with the 0.5 mm mesh reducing parasitism by approximately 20% relative to the 1 mm mesh. Parasitism was much lower in the field with no significant difference among treatments, but the 0.5 mm mesh did significantly reduce predation by almost 50% in comparison to the 1 mm mesh. To reduce egg predation while enabling detectable levels of parasitism by O. agrili, we therefore recommend using mesh screen 0.5 mm wide to create ESEs for field deployment.
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Database assignments for author(s): Paula M. Shrewsbury, Jonathan P. Lelito

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
surveys/distribution/isolation

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Agrilus planipennis	Ash (Fraxinus)	U.S.A. (NE)
Oobius agrili (parasitoid)	Agrilus planipennis	Ash (Fraxinus)	U.S.A. (NE)