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Title: Can Emerald ash borer, Agrilus planipennis (Coleoptera: Buprestidae), emerge from logs two summers after infested trees are cut?
Author: Petrice, Toby R.; Haack, Robert A.
Source: The Great Lakes Entomologist. 40(1&2): 92-95.
Description: Emerald ash borer (EAB), Agrilus planipennis Fairmaire (Coleoptera: Buprestidae), is a serious invasive pest of ash trees (Fraxinus spp.) in North America. Much of EAB's range expansion has been attributed to human-assisted movement of infested items such as ash logs and firewood. It is unclear the amount of time that logs cut from live EAB-infested ash trees should be restricted from movement until they are no longer capable of producing viable EAB adults. In March and April 2004, we cut log sections from EAB-infested green ash (F. pennsylvanica Marsh) trees in Ann Arbor, Washtenaw County, Michigan. Log sections (mean length = 24.8 cm; diam. = 11.6 cm) were stood upright on one cut end and stored beneath a hardwood forest canopy. Adult EAB were allowed to freely emerge from log sections during summer 2004. When logs were dissected in November 2004 to January 2005, approximately one half of the total EAB life stages that were present in the logs were dead, while the other half either emerged as adults in summer 2004 or were live prepupae. Also, adults emerged from a subset of these log sections when reared in the laboratory in January to February 2005. These data suggest that EAB adults can emerge from logs for two successive emergence periods after infested ash trees have been cut.
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Petrice, Toby R.; Haack, Robert A. 2007. Can Emerald ash borer, Agrilus planipennis (Coleoptera: Buprestidae), emerge from logs two summers after infested trees are cut?. The Great Lakes Entomologist. 40(1&2): 92-95.
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