Project Number: 2092-22430-001-12
Start Date: Jan 15, 2011
End Date: Dec 31, 2014
A. Collect existing data on basic biology of apple maggot in the Eastern U.S. and Mexico versus Pacific Northwest including obligate diapausing, facultative diapausing, and non-diapausing portions of the population. Collect existing data on WCFF in the Pacific Northwest. Data will include host range, distribution maps, climatic data, growth optima, upper and lower thermal limits, degree day models, diapause induction, maintenance, and completion. B. Enter existing data on AM and WCFF biology as well as environmental data of importing countries into risk modeling programs. Determine baseline for risk, and identify research gaps. C. Determine critical parameters (i.e. photoperiod, chilling requirement) for diapause induction and completion in apple maggot from Washington State. We will include obligate diapausing, facultative diapausing, and putative non-diapausing portions of AM populations. D. Determine critical parameters for growth and development of apple maggot and Western cherry fruit fly under climatic conditions specific for tropical regions. E. Identify improved attractants, such as fruit volatiles, for apple maggot fly in the Western U.S. Improved attractants will improve the accuracy of the data used for pest distribution, numbers (load factor), and help in establishing and maintaining quarantine areas. In addition, improved trapping methodologies will increase confidence in pest control measures with our trading partners. F. Demonstrate that morphometric and molecular methods can reliably separate the apple maggot and snowberry maggot. Misidentification of a non-quarantine pest as a quarantine pest can adversely affect trade and negatively impact risk assessment models. G. Hold a regional workshop on Western cherry fruit fly. The specific topic to be addressed is how to develop a model that can be used to predict the probability of an orchard being infested with cherry fruit fly.