2013 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 University of Delaware (UD), we continued studies to determine how many days adult ALB survive under different temperature conditions, the results of which we are using for development of models to predict adult ALB life expectancy across the climatic regions in the United States. We then integrated the preliminary data with our degree day model of adult ALB emergence, which collectively provide forecasts when adult ALB will be present. 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 Maine to Minnesota, and have been providing stakeholders with weekly forecasts for optimizing early detection, survey and control strategies. This research addresses objective 1.2.2. In collaboration with UD, we continued to identify the geographic and host range of ALB and CLB in their respective countries of origin in Asia, specifically focusing on non-invasive populations within natural ecosystems. We continued to integrate the respective results with the current geographic distribution of mixed deciduous forests and citrus in China. Collectively, these results identified regions in China and South Korea that likely harbor effective parasitic wasp for use in biological control of ALB and CLB in the US and Europe.