Mate quality affects offspring sex ratio in blue tits

@article{Svensson1996MateQA,
  title={Mate quality affects offspring sex ratio in blue tits},
  author={Erik I. Svensson and Jan-{\AA}ke Nilsson},
  journal={Proceedings of the Royal Society of London. Series B: Biological Sciences},
  year={1996},
  volume={263},
  pages={357 - 361}
}
  • Erik I. Svensson, Jan-Åke Nilsson
  • Published in
    Proceedings of the Royal…
    1996
  • Biology
  • Questions concerning the occurrence of adaptive sex ratio manipulation have a long research tradition in evolutionary biology, but evidence from birds is scarce. It has been suggested that birds are unable to adaptively determine the sex of their young because of the constraints of their sex determination systems. Here we report results from a study of variation in offspring sex ratio in the blue tit, Parus caeruleus, a small passerine bird. Our data suggest that females are able to manipulate… CONTINUE READING

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