Data from: Rapid and Repeatable Host Plant Shifts Drive Reproductive Isolation Following a Recent Human-Mediated Introduction of the Apple Maggot Fly, Rhagoletis pomonella

Glen R. Hood, Thomas H.Q. Powell, Doellman, Sheina B. Sim, Mary Glover, Wee L. Yee, Robert B. Goughnour, Monte Mattsson, Dietmar Schwarz & Jeffrey L. Feder
Ecological speciation via host-shifting is often invoked as a mechanism for insect diversification, but the relative importance of this process is poorly understood. The shift of Rhagoletis pomonella in the 1850s from the native downy hawthorn, Crataegus mollis, to introduced apple, Malus pumila, is a classic example of sympatric host race formation, a hypothesized early stage of ecological speciation. The accidental human-mediated introduction of R. pomonella into the Pacific Northwest (PNW) in the late-1970’s allows...
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