Predictive Modeling & Mitigation of Effects of Climate Change on Migration & Infestation Patterns of Semitropical/tropical Crop Pest Insects
Insect Control and Cotton Disease Research Unit
2011 Annual Report
1a.Objectives (from AD-416)
1. Establish a network of pest monitoring and collection sites in the southeastern U.S.
2. Map seasonal migration of S. frugiperda from the FL and TX overwintering areas into the central and eastern U.S.
3. Adapt and test models correlating migration and overwintering ranges with weather patterns to identify areas susceptible to increased infestation due to climate change.
4. Develop control strategies to preempt or mitigate the anticipated expansion of S. frugiperda infestation.
1b.Approach (from AD-416)
1. Pheromone trapping and larval collections by a network of volunteer and cooperative agents. Monitoring information will be made available on the internet via PestWatch (Penn State).
2. Mapping of migration pathways by a novel haplotype analysis technique.
3. Modeling derived using General Circulation Model output and HYSPLIT atmospheric dispersion model predictions.
4. Mitigation efforts will focus on the adaptation of feeding attractant-based techniques currently being tested on the Noctuid pest Helicoverpa zea for use on S. frugiperda.
This is a new project, with the goal of mapping seasonal migration of the fall armyworm in the U.S., and ultimately developing new approaches to better manage this pest insect, including control of its seasonal expansion. In FY 2011, cooperators at 24 locations throughout the central U.S. trapped fall armyworm moths weekly. Existing pest monitoring networks in MO, KY, and Quebec province (Canada) provided access to additional fall armyworm trap data. Trap data were entered into the on-line PestWatch database. Armyworm larvae collected from whorl stage and silking stage corn at College Station, TX, were provided to project collaborators at Gainesville, FL, for colony maintenance and for comparison of pheromone production/composition with Florida-collected armyworms. This project, as it progresses, will provide valuable new information on the fall armyworm, and from a much broader geographic context, than has heretofore been available. Work under the project will provide new insights and direction to development of procedures and protocols for control of this major crop and pasture pest.