Publications by authors named "Kayla M Hardwick"

The maize stalk borer, Busseola fusca, is an important Lepidopteran pest of cereal crops in Central, East, and Southern Africa. Crop losses due to B. fusca feeding activity vary by region, but can result in total crop loss in areas with high levels of infestation.

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Comparative methods allow researchers to make inferences about evolutionary processes and patterns from phylogenetic trees. In Bayesian phylogenetics, estimating a phylogeny requires specifying priors on parameters characterizing the branching process and rates of substitution among lineages, in addition to others. Accordingly, characterizing the effect of prior selection on phylogenies is an active area of research.

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Article Synopsis
  • * This study examines two lizard species, Sceloporus cowlesi and Aspidoscelis inornata, which have developed lighter (blanched) colorations due to genetic mutations linked to the melanocortin-1 receptor gene (Mc1r), as they colonized the lighter dune habitat.
  • * The research revealed both similarities and differences between the two lizard species regarding their adaptation processes, including distinct colonization times and genetic factors, with notable findings on how the beneficial allele behaves differently in each species (
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Determining the adaptive significance of phenotypic traits is key for understanding evolution and diversification in natural populations. However, evolutionary biologists have an incomplete understanding of how specific traits affect fitness in most populations. The White Sands system provides an opportunity to study the adaptive significance of traits in an experimental context.

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Understanding the rate at which new species form is a key question in studying the evolution of life on earth. Here we review our current understanding of speciation rates, focusing on studies based on the fossil record, phylogenies, and mathematical models. We find that speciation rates estimated from these different studies can be dramatically different: some studies find that new species form quickly and often, while others find that new species form much less frequently.

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