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S. Via | 1990
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R. Hufbauer ; S. Via | 1999The evolution of associations between herbivorous insects and their parasitoids is likely to be influenced by the relationship between the herbivore and its host plants. If populations of specialized herbivorous insects are structured by their h[...]
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S. Via | 1989
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D. Hawthorne ; S. Via | 2001The evolution of ecological specialization generates biological diversity and may lead to speciation(1-3). Genetic architecture can either speed or retard this process. If resource use and mate choice have a common genetic basis through pleiotro[...]
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R. Barrette ; T. Crease ; P. Hebert ; S. Via | 1994The pea aphid Acyrthosiphon pisum has been established in North America for at least a century and occurs on a broad range of host plants. Despite its importance as a crop pest, there is little understanding of the genetic structure of its popul[...]
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S. Via ; A. Bouck ; S. Skillman | 2000Sympatric races of pea aphids on alfalfa and red clover are highly ecologically specialized and significantly reproductively isolated. Much of the restriction of gene how between the specialized populations is due to habitat choice behavior of t[...]
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S. Via | 1999Determining the extent and causes of barriers to gene flow between genetically divergent populations or races of single species is an important complement to post facto analyses of the causes of reproductive isolation between recognized species.[...]
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Phenotypic evolution in contemporary populations can generally be witnessed only when novel selective forces produce rapid evolution. Examples of conditions that have led to rapid evolution include drastic environmental change, invasion of a new[...]
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M. Caillaud ; S. Via | 2000Not only is ecological specialization a defining feature of much of Earth's biological diversity, the evolution of specialization may also play a central role in generating diversity by facilitating speciation. To understand how ecological speci[...]
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S. Via | 2001Sympatric speciation has become increasingly accepted in the past decade, as a result of new models substantiating its plausibility and new evidence that the conditions specified by the models are met in many natural populations. Retrospective p[...]
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S. Via | 2002Ecological interactions and the natural selection they cause play a prominent causal role in biological diversification and speciation. As a discipline, ecological genetics integrates the two components of adaptive evolution (natural selection a[...]
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S. Via ; D. Hawthorne | 2002Genetic correlations among phenotypic characters result when two traits are influenced by the same genes or sets of genes. By reducing the degree to which traits in two environments can evolve independently (e. g., Lande 1979; Via and Lande 1985[...]
