Complete reproductive skew within white-browed sparrow weaver groups despite outbreeding opportunities for subordinates of both sexes

@article{Harrison2013CompleteRS,
  title={Complete reproductive skew within white-browed sparrow weaver groups despite outbreeding opportunities for subordinates of both sexes},
  author={Xavier A Harrison and Jennifer E. York and Dominic L Cram and Michelle C. Hares and Andrew J. Young},
  journal={Behavioral Ecology and Sociobiology},
  year={2013},
  volume={67},
  pages={1915-1929}
}
The distribution of reproductive success within societies is a key determinant of the outcomes of social evolution. Attempts to explain social diversity, therefore, require that we quantify reproductive skews and identify the mechanisms that generate them. Here, we address this priority using life history and genotypic data from >600 individuals in 40 wild groups of the cooperatively breeding white-browed sparrow weaver, Plocepasser mahali. We show that groups comprise up to six males and seven… CONTINUE READING
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