4 Works

Data from: The contribution of maternal effects to selection response: an empirical test of competing models

Joel William McGlothlin & Laura F. Galloway
Maternal effects can dramatically influence the evolutionary process, in some cases facilitating and in others hindering adaptive evolution. Maternal effects have been incorporated into quantitative genetic models using two theoretical frameworks: the variance-components approach, which partitions variance into direct and maternal components, and the trait-based approach, which assumes that maternal effects are mediated by specific maternal traits. Here, we demonstrate parallels between these models and test their ability to predict evolutionary change. First, we show...

Data from: Convergent evolution of sexual dimorphism in skull shape using distinct developmental strategies

Emma Sherratt, Joel William McGlothlin, , Jonathan B. Losos, Arhat Abzhanov, Thomas J. Sanger & Edmund D. Brodie
Studies integrating evolutionary and developmental analyses of morphological variation are of growing interest to biologists as they promise to shed fresh light on the mechanisms of morphological diversification. Sexually dimorphic traits tend to be incredibly divergent across taxa. Such diversification must arise through evolutionary modifications to sex differences during development. Nevertheless, few studies of dimorphism have attempted to synthesize evolutionary and developmental perspectives. Using geometric morphometric analysis of head shape for 50 Anolis species, we...

Data from: Sexual selection in a hermaphroditic plant through female reproductive success

Can Dai & Laura F. Galloway
Sexual selection is well accepted as a mechanism of shaping traits in animals. However, whether and how floral traits are sexually selected in hermaphroditic plants remains less clear. Here, we use Passiflora incarnata to address how floral traits that affect pollination success are selected via female function. We manipulated the ecological context by limiting pollination and adding resources to expand the phenotypic distribution and alter the intensity of sexual selection. Total sexual selection favoured lower...

Data from: Patterns of cyto-nuclear linkage disequilibrium in Silene latifolia: genomic heterogeneity and temporal stability

Peter D. Fields, David E. McCauley, Edward V. McAssey & Douglas R. Taylor
Non-random association of alleles in the nucleus and cytoplasmic organelles, or cyto-nuclear linkage disequilibrium (LD), is both an important component of a number of evolutionary processes and a statistical indicator of others. The evolutionary significance of cyto-nuclear LD will depend on both its magnitude and how stable those associations are through time. Here, we use a longitudinal population genetic data set to explore the magnitude and temporal dynamics of cyto-nuclear disequilibria through time. We genotyped...

Registration Year

  • 2013
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  • Dataset
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Affiliations

  • University of Virginia
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  • Virginia Tech
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  • Vanderbilt University
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  • Harvard University
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