Current and Future Potential Risk of Establishment of Grapholita molesta (Lepidoptera: Tortricidae) in Washington State

Environmental Entomology
Lisa G NevenTewodros Wakie

Abstract

The oriental fruit moth, Grapholita molesta (Busck) (Lepidoptera: Tortricidae), is a primary pest of stone fruits that cause significant economic damage. Larvae, which enter the host plant through shoot tips, damage shoots, and ripe fruits. Native to Asia, this pest now occurs in many fruit-growing countries, including the United States and Canada. Though the pest was previously reported from many states within the United States, its current distribution and the environmental variables that influence its distribution are not properly identified. The objectives of this study were to 1) identify the environmental factors associated with G. molesta current distribution, 2) predict the current distribution of G. molesta in Washington State (WA) using Maxent and Climex models, 3) identify those areas within WA best suited for establishment of pest free zones, areas of low pest prevalence, and pest free production areas, and 4) identify regions most at risk for further expansion of G. molesta populations as a function of climate change. The current models predicted a small portion of central WA is suitable to support G. molesta, which is consistent with observed distributions. However, climate change models predict that more areas wi...Continue Reading

References

Aug 30, 2006·Journal of Economic Entomology·Clayton T MyersGrzegorz Krawczyk
Feb 12, 2010·Nature·Richard H MossThomas J Wilbanks
Sep 21, 2011·PloS One·Juliann E AukemaBetsy Von Holle
Mar 1, 2012·International Journal of Biometeorology·Radosław JuszczakJanusz Olejnik
Mar 2, 2013·Journal of Economic Entomology·Lisa G Neven

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