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Allopatric genetic origins for sympatric host-plant shifts and race formation in Rhagoletis
Tephritid fruit flies belonging to the Rhagoletis pomonella sibling species complex are controversial because they have been proposed to diverge in sympatry (in the absence of geographic isolation)Expand
Evidence for inversion polymorphism related to sympatric host race formation in the apple maggot fly, Rhagoletis pomonella.
Evidence suggests that the apple maggot, Rhagoletis pomonella (Diptera: Tephritidae) is undergoing sympatric speciation (i.e., divergence without geographic isolation) in the process of shifting andExpand
Natural selection and sympatric divergence in the apple maggot Rhagoletis pomonella
In On the Origin of Species, Darwin proposed that natural selection had a fundamental role in speciation. But this view receded during the Modern Synthesis when allopatric (geographic) models ofExpand
THE EFFECTS OF WINTER LENGTH ON THE GENETICS OF APPLE AND HAWTHORN RACES OF RHAGOLETIS POMONELLA (DIPTERA: TEPHRITIDAE)
Host plant‐associated fitness trade‐offs are central to models of sympatric speciation proposed for certain phytophagous insects. But empirical evidence for such trade‐offs is scant, which has calledExpand
Selective maintenance of allozyme differences among sympatric host races of the apple maggot fly.
Whether phytophagous insects can speciate in sympatry when they shift and adapt to new host plants is a controversial question. One essential requirement for sympatric speciation is that disruptiveExpand
A FIELD TEST FOR HOST‐PLANT DEPENDENT SELECTION ON LARVAE OF THE APPLE MAGGOT FLY, RHAGOLETIS POMONELLA
Host‐plant dependent fitness trade‐offs refer to traits that enhance the performance of an insect on one plant species to its detriment on others. Such trade‐offs are central to models of sympatricExpand
Effects of Photoperiod and Light Intensity on the Genetics of Diapause in the Apple Maggot (Diptera: Tephritidae)
Abstract Rhagoletis pomonella (Walsh) is an important pest of apples and has been at the center of a long-standing debate concerning modes of speciation. The fly has been proposed to speciate withoutExpand
Evidence for Broad-Scale Conservation of Linkage Map Relationships Between Rhagoletis pomonella (Diptera: Tephritidae) and Drosophila melanogaster (Diptera: Drosophilidae)
Abstract Recent advances in molecular genetic techniques have made it possible to conduct broad-scale comparisons of genome organization, structure and function among taxa. Here, we test for syntenyExpand
Toward a Molecular Genetic Linkage Map for the Apple Maggot Fly (Diptera: Tephritidae): Comparison of Alternative Strategies
Apple [ Malus pumila (L.)] and hawthorn (Crataegus spp.) infesting populations of Rhagoletis pomonella Walsh are rapidly becoming a model system for the study of host plant specialization andExpand
Two attacin antibacterial genes of Drosophila melanogaster.
Insects express a battery of potent antimicrobial proteins in response to injury and infection. Recent work from several laboratories has demonstrated that this response is neither stereotypic norExpand
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