8 Works

Data from: Does genetic diversity reduce sibling competition?

J. David Aguirre & Dustin J. Marshall
An enduring hypothesis for the proximal benefits of sex is that recombination increases the genetic variation among offspring and that this genetic variation increases offspring performance. A corollary of this hypothesis is that mothers that mate multiply increase genetic variation within a clutch and gain benefits due to genetic diversity alone. Many studies have demonstrated that multiple mating can increase offspring performance, but most attribute this increase to sexual selection and the role of genetic...

Data from: Ecological incumbency impedes stochastic community assembly in Holocene foraminifera from the Huon Peninsula, Papua New Guinea

Claire E. Reymond, Michael Bode, Willem Renema & John M. Pandolfi
Persistence in the structure of ecological communities can be predicted both by deterministic and by stochastic theory. Evaluating ecological patterns against the neutral theory of biodiversity provides an appropriate methodology for differentiating between these alternatives. We traced the history of benthic foraminiferal communities from the Huon Peninsula, Papua New Guinea. From the well-preserved uplifted reef terrace at Bonah River we reconstructed the benthic foraminiferal communities during a 2200-year period (9000–6800 yr B.P.) of reef building...

Data from: Rapid microsatellite marker development for African mahogany (Khaya senegalensis, Meliaceae) using next-generation sequencing and assessment of its intra-specific genetic diversity.

Mirko Karan, Darren S. Evans, Katharina Schulte, Carole Wright, David Innes, Timothy A. Holton, D. Garth Nikles & Geoff R. Dickinson
Khaya senegalensis (African mahogany or dry-zone mahogany) is a high-value hardwood timber species with great potential for forest plantations in northern Australia. The species is distributed across the sub-Saharan belt from Senegal to Sudan and Uganda. Due to heavy exploitation and constraints on natural regeneration and sustainable planting, it is now classified as a vulnerable species. Here we describe the development of microsatellite markers for K. senegalensis using next generation sequencing in order to assess...

Data from: Fitness consequences of larval traits persist across the metamorphic boundary

Angela J Crean, Keyne Monro & Dustin J. Marshall
Metamorphosis is thought to provide an adaptive decoupling between traits specialised for each life-history stage in species with complex life cycles. However, an increasing number of studies are finding that larval traits can carry-over to influence post-metamorphic performance, suggesting that these life-history stages may not be free to evolve independently of each other. We used a phenotypic selection framework to compare the relative and interactive effects of larval size, time to hatching, and time to...

Data from: Reconciling extremely strong barriers with high levels of gene exchange in annual sunflowers

Julianno Bergoch Monteiro Sambatti, Jared L. Strasburg, Daniel Ortiz-Barrientos, Eric J. Baack & Loren Henry Rieseberg
In several cases, estimates of gene flow between species appears to be higher than predicted given the strength of interspecific barriers. However, as far as we are aware, detailed measurements of reproductive isolation have not previously been compared with a coalescent-based assessment of gene flow. Here, we contrast these two measures in two species of sunflower, Helianthus annuus and Helianthus petiolaris. We quantified the total reproductive barrier strength between these species by compounding the contributions...

Data from: Stronger convex (stabilizing) selection on homologous sexual display traits in females than in males: a multipopulation comparison in Drosophila serrata

Howard D. Rundle & Stephen F. Chenoweth
Mutual mate choice for homologous sexual display traits has been demonstrated in Mutual mate choice for homologous sexual display traits has been demonstrated in several recent studies yet little attention has been given to quantitative comparison of the strength and form of mate preferences between the sexes. Such comparisons may provide important insight into the evolution of mate choice for honest signals. In particular, because females generally provide the majority of resources for initial offspring...

Data from: Comparative multi-locus phylogeography confirms multiple vicariance events in co-distributed rainforest frogs

Rayna C Bell, Jason B MacKenzie, Michael J Hickerson, Krystle L Chavarría, Michael Cunningham, Stephen Williams, Craig Moritz & K. L. Chavarria
Though Pleistocene refugia are frequently cited as drivers of species diversification, comparisons of molecular divergence among sister species typically indicate a continuum of divergence times from the late Miocene, rather than a clear pulse of speciation events at the Last Glacial Maximum (LGM). Community-scale inference methods that explicitly test for multiple vicariance events, and account for differences in ancestral effective population size and gene flow, are well suited for detecting heterogeneity of species’ responses to...

Data from: Reducing mutation load through sexual selection on males

Katrina McGuigan, Donna Petfield & Mark W Blows
Mutation load is a key parameter in evolutionary theories, but relatively little empirical information exists on the mutation load of populations, or the elimination of this load through selection. We manipulated the opportunity for sexual selection within a mutation accumulation divergence experiment to determine how sexual selection on males affected the accumulation of mutations contributing to sexual and non-sexual fitness. Sexual selection prevented the accumulation of mutations affecting male mating success, the target trait, as...

Registration Year

  • 2011
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Affiliations

  • University of Queensland
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  • University of California, Berkeley
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  • University of Melbourne
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  • Indiana University
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  • Museum of Vertebrate Zoology
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  • Queens University of Charlotte
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  • University of Ottawa
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  • Luther College
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  • University of British Columbia
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  • National Museum of Natural History
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