2012 Annual Report
1a.Objectives (from AD-416):
The objectives of this cooperative research project are (1) to investigate host selection, host colonization and the nutritional ecology of the Asian Longhorned Beetle (ALB), ANOPLOPHORA GLABRIPENNIS; (2) to identify ecological and behavioral traits vulnerable to intervention and development of detection, monitoring, biological control and other IPM strategies; and (3) to develop technologies and methodologies for optimally implementing these strategies into eradication and population management programs directed at ALB and closely related invasive insect pest species.
1b.Approach (from AD-416):
Complementary field and laboratory studies will be conducted. (1) Comparative studies of adult ALB behavioral responsiveness to characterized formulated host odor blends of ACER MONO, ACER NEGUNDO, ACER PLATANOIDES and ACER TRUNCATUM will be evaluated in an olfactometer under laboratory conditions at BIIRU. (2) Comparative studies of adult ALB behavioral responsiveness to ACER MONO, ACER NEGUNDO, ACER PLATANOIDES and ACER TRUNCATUM trees will be evaluated in an olfactometer under laboratory conditions at BIIRU. (3) Evaluate adult ALB behavior as a function of physiological and biological factors (e.g. pre vs. post maturation; mated vs. non-mated; pre vs. post oviposition). (4) Adult ALB attraction to olfactometer active blends will be evaluated under natural field conditions in China, including evaluation of formulation, blend ratio and attractive radius. This research will collectively complement our ongoing investigations of host selection by ALB and identification of artificial lures for detection, monitoring, management and eradication of ALB; and elucidate the mechanisms of host selection and colonization by ALB.
In collaboration with Simon Fraser University (SFU), University of Delaware (UD), and Caixin Xian Forestry Bureau, Henan Province, China, we designed studies to evaluate ALB population level and landscape parameters at multiple field sites in the Caixin District. Our Chinese collaborator has been conducting these studies, and although studies are ongoing, results are identifying potential field sites that best meet specific requirements for our evaluation of the relative attraction of ALB to Acer mono trees, artificial lures of host odors and beetle produced sex pheromones. This research addresses objective 1.1.1. In collaboration with UD, we continued development of predictive models of adult ALB life expectancy across the climatic regions at risk in the US. We then integrated the preliminary data with our degree day model of ALB emergence to produce the first predictive model for forecasting the seasonal occurrence of adult ALB. In cooperation with UD, APHIS, USFS and state agencies, we interfaced our models with local climatic conditions in high risk areas across thirteen states from ME to MN, and have been providing stakeholders with weekly forecasts to optimizing early detection, survey and control strategies. In collaboration with UD, we continued to identify the geographic and host range of ALB and CLB in Asia, and integrated the respective results with the current geographic distribution of mixed deciduous forests and citrus in China. Collectively, these results identified regions in China likely harboring effective parasitic wasp for use in biological control of ALB and CLB in the US and Europe.