7 Works

Data from: Effects of vicariant barriers, habitat stability, population isolation and environmental features on species divergence in the south-western Australian coastal reptile community

Danielle L. Edwards, J. Scott Keogh & L. Lacey Knowles
Identifying explicit hypotheses regarding the factors determining genetic structuring within species can be difficult, especially in species distributed in historically dynamic regions. To contend with these challenges, we use a framework that combines species distribution models, environmental data and multi-locus genetic data to generate and explore phylogeographic hypotheses for reptile species occupying the coastal sand-dune and sand-plain habitats of the south-western Australian biodiversity hotspot; a community which has both a high diversity of endemics and...

Data from: Ecological selection as the cause and sexual differentiation as the consequence of species divergence?

Elen Oneal & L. Lacey Knowles
Key conceptual issues about speciation go unanswered without consideration of non-mutually exclusive factors. With tests based on speciation theory, we exploit the island distribution and habitat differences exhibited by the Caribbean cricket Amphiacusta sanctaecrucis, and with an analysis of divergent ecological selection, sexually selected differentiation, and geographic isolation, address how these different factors interact. After testing for divergent selection by comparing neutral genetic and morphological divergence in one ecological (mandible shape) and one sexual (male...

Data from: Spatially explicit models of dynamic histories: examination of the genetic consequences of Pleistocene glaciation and recent climate change on the American Pika.

Jason L. Brown & L. Lacey Knowles
A central goal of phylogeography is to identify and characterize the processes underlying divergence. One of the biggest impediments currently faced is how to capture the spatiotemporal dynamic under which a species evolved. Here we described an approach that couples species distribution models (SDMs), demographic and genetic models in a spatiotemporally explicit manner. Analyses of American Pika (Ochotona priniceps) from the sky islands of the central Rocky Mountains of North America are used to provide...

Data from: Food plant-derived disease tolerance and resistance in a natural butterfly-plant-parasite interaction

Eleanore D. Sternberg, Thierry LeFèvre, James Li, Carlos Lopez Fernandez De Castillejo, Hui Li, Mark D. Hunter & Jacobus C. De Roode
Organisms can protect themselves against parasite-induced fitness costs through resistance or tolerance. Resistance includes mechanisms that prevent infection or limit parasite growth while tolerance alleviates the fitness costs from parasitism without limiting infection. Although tolerance and resistance affect host-parasite coevolution in fundamentally different ways, tolerance has often been ignored in animal-parasite systems. Where it has been studied, tolerance has been assumed to be a genetic mechanism, unaffected by the host environment. Here we studied the...

Data from: Phylogenetic structure of vertebrate communities across the Australian arid zone

Hayley C. Lanier, Danielle L. Edwards & L. Lacey Knowles
AIM: To understand the relative importance of ecological and historical factors in structuring terrestrial vertebrate assemblages across the Australian arid zone, and to contrast patterns of community phylogenetic structure at a continental scale. LOCATION: Australia. METHODS: We present evidence from six lineages of terrestrial vertebrates (five lizard clades and one clade of marsupial mice) that have diversified in arid and semi-arid Australia across 37 biogeographical regions. Measures of within-lineage community phylogenetic structure and species turnover...

Data from: Inbreeding depression in urban environments of the bird's nest fungus Cyathus stercoreus (Nidulariaceae: Basidiomycota)

Tim Y. James & Brian D. Malloure
Many organisms display codispersal of offspring, but fewer display codispersal of compatible gametes. This mechanism enhances the ability of a species to colonize after long distance dispersal as a mechanism of reproductive assurance, but it also fosters inbreeding and potential reduction in fitness. Here we investigated both long distance dispersal and inbreeding in the bird’s nest fungus Cyathus stercoreus, a dung and mulch-associated fungus with a splash cup fruiting body appearing like a miniature bird’s...

Data from: Morphological differentiation correlates with ecological but not genetic divergence in a Gehyra gecko.

Mark Sistrom, Danielle L. Edwards, Mark Hutchinson & Stephen Donnellan
Body size affects life history, the ecological niche of an organism and its interactions with other organisms. Resultantly, marked differences in body size between related organisms are often an indication of a species boundary. This is particularly evident in the Gehyra variegata species complex of geckos, which displays differential body sizes between genetically divergent species, but high levels of intra-specific morphological conservatism. We report on a Gehyra population that displays extraordinary body size differentiation in...

Registration Year

  • 2012

Resource Types

  • Dataset


  • University of Michigan-Ann Arbor
  • Duke University
  • University of Adelaide
  • Australian National University
  • Emory University