Wednesday, December 13, 2006

Emerald ash borer, Agrilus planipennis, attraction in field trapping experiments employing combinations of visual, olfactory, tactile, and canopy position cues

Therese M. Poland, tpoland@fs.fed.us1, Deepa Pureswaran, pureswar@msu.edu2, Deborah G. McCullough, mccullo6@msu.edu3, Peter De Groot, pdegroot@NRCan.gc.ca4, and Gary Grant, ggrant@NRCan.gc.ca4. (1) USDA Forest Service, North Central Research Station, 1407 S. Harrison Rd, East Lansing, MI, (2) Michigan State University, Department of Entomology, 243, Natural Sciences Building, East Lansing, MI, (3) Michigan State University, Entomology, 243 Natural Science Bldg, Michigan State University, East Lansing, MI, (4) Natural Resources Canada, Canadian Forest Service, Great Lakes Forestry Centre, 1219 Queen Street East, Sault Ste. Marie, ON, Canada

Improved survey tools are essential for locating infestations of the invasive emerald ash borer, Agrilus planipennis Fairmaire (Coleoptera: Buprestidae). Current survey methods including visual inspection for damage, girdled trap trees, and trunk dissections are less than ideal because newly infested trees typically do not display external symptoms and trap trees and trunk dissections are destructive and labor intensive. Previous studies suggest that A. planipennis is attracted to the color purple, to blends of host volatiles from ash bark and foliage, and to girdled ash trees. It has also been found that A. planipennis prefers to attack trees with rough bark. We evaluated attraction of A. planipennis to triangular purple panel traps baited with various combinations of ash volatiles that elicited antennal responses by A. planipennis as well as volatiles from ash that have behavioral activity in other bark- or wood-boring insects. We also evaluated attraction of A. planipennis to traps that incorporated multiple components of attraction. Multi-component traps included triangular purple panels mounted at 1.5 and 2.5 m on a purple pole. The upper and lower panels were baited with foliar and bark volatiles, respectively. Panels were also coated with a rough "bark" texture. The results will lead to improved trapping and detection methods for A. planipennis.

Species 1: Coleoptera Buprestidae Agrilus planipennis (emerald ash borer)