7 Works

Data from: Extra-group mating increases inbreeding risk in a cooperatively breeding bird

Xavier A. Harrison, Jennifer E. York, Dominic L. Cram & Andrew J. Young
In many cooperatively-breeding species females mate extra-group, the adaptive value of which remains poorly understood. One hypothesis posits that females employ extra-group mating to access mates whose genotypes are more dissimilar to their own than their social mates’, so as to increase offspring heterozygosity. We test this hypothesis using life-history and genetic data from 36 cooperatively-breeding white-browed sparrow weaver (Plocepasser mahali) groups. Contrary to prediction, a dominant female’s relatedness to her social mate did not...

Data from: Turtle embryos move to optimal thermal environments within the egg

Bo Zhao, Teng Li, Richard Shine, Wei-Guo Du & W.-G. Du
A recent study demonstrated that the embryos of soft-shelled turtles can reposition themselves within their eggs to exploit locally warm conditions. In the current paper, we ask whether turtle embryos actively seek out optimal thermal environments for their development, as do post-hatching individuals. Specifically, (1) do reptile embryos move away from dangerously-high temperatures, as well as towards warm temperatures? and (2) is such embryonic movement due to active thermoregulation, or (more simply) to passive embryonic...

Data from: Parentage and sibship inference from markers in polyploids

Jinliang Wang, Kim Scribner & Kim T. Scribner
Many plants and some animal species are polyploids. Non-disomically inherited markers (e.g. microsatellites) in such species cannot be analysed directly by standard population genetics methods developed for diploid species. One solution is to transform the polyploid codominant genotypes to pseudo diploid dominant genotypes, which can then be analysed by standard methods for various purposes such as spatial genetic structure, individual relatedness and relationship. Although this data transformation approach has been used repeatedly in the literature,...

Data from: Population size and time since island isolation determine genetic diversity loss in insular frog populations

Supen Wang, Wei Zhu, Xu Gao, Xianping Li, Yan Shaofei, Xuan Liu, Ji Yang, Zengxiang Gao, Yiming Li & Shaofei Yan
Understanding the factors that contribute to loss of genetic diversity in fragmented populations is crucial for conservation measurements. Land-bridge archipelagoes offer ideal model systems for identifying the long-term effects of these factors on genetic variations in wild populations. In this study, we used 9 microsatellite markers to quantify genetic diversity and differentiation of 810 pond frogs (Pelophylax nigromaculataus) from 24 islands of the Zhoushan Archipelago and 3 sites on nearby mainland China and estimated the...

Data from: Resolving ambiguity of concatenation in multi-locus sequence data for the construction of phylogenetic supermatrices

Alfried P. Vogler & Douglas Chesters
The construction of supermatrices from mining of DNA metadata is problematic due to incomplete species identification and incongruence of gene trees that hamper sequence concatenation based on Linnaean binomials. We applied methods from graph theory to minimize ambiguity of concatenation globally over a large data set. An initial step establishes sequence clusters for each locus that broadly correspond to Linnaean species. These clusters frequently are not consistent with binomials and specimen identifiers, which greatly complicates...

Data from: How do foragers decide when to leave a patch? A test of alternative models under natural and experimental conditions

Harry H. Marshall, Alecia J. Carter, Alexandra Ashford, J. Marcus Rowcliffe & Guy Cowlishaw
1. A forager’s optimal patch-departure time can be predicted by the prescient marginal value theorem (pMVT), which assumes they have perfect knowledge of the environment, or by approaches such as Bayesian-updating and learning rules, which avoid this assumption by allowing foragers to use recent experiences to inform their decisions. 2. In understanding and predicting broader scale ecological patterns, individual-level mechanisms, such as patch-departure decisions, need to be fully elucidated. Unfortunately, there are few empirical studies...

Data from: Long-distance dispersal maximizes evolutionary potential during rapid geographic range expansion

Cécile Berthouly-Salazar, Cang Hui, Tim M. Blackburn, Coline Gaboriaud, Berndt J. Van Rensburg, Bettine Jansen Van Vuuren & Johannes J. Le Roux
Conventional wisdom predicts that sequential founder events will cause genetic diversity to erode in species with expanding geographic ranges, limiting evolutionary potential at the range margin. Here, we show that invasive European starlings (Sturnus vulgaris) in South Africa preserve genetic diversity during range expansion, possibly as a result of frequent long-distance dispersal events. We further show that unfavourable environmental conditions trigger enhanced dispersal, as indicated by signatures of selection detected across the expanding range. This...

Registration Year

  • 2013
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Resource Types

  • Dataset
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Affiliations

  • Zoological Society of London
    7
  • Chinese Academy of Sciences
    2
  • Institute of Zoology
    2
  • University of Pretoria
    1
  • Hangzhou Normal University
    1
  • King Saud University
    1
  • University of Sydney
    1
  • University of Exeter
    1
  • Ocean University of China
    1
  • University of Johannesburg
    1