Quantitative genetics and behavioural correlates of digit ratio in the zebra finch

  title={Quantitative genetics and behavioural correlates of digit ratio in the zebra finch},
  author={Wolfgang Forstmeier},
  journal={Proceedings of the Royal Society B: Biological Sciences},
  pages={2641 - 2649}
  • W. Forstmeier
  • Published 22 December 2005
  • Biology
  • Proceedings of the Royal Society B: Biological Sciences
A recent study on a captive zebra finch population suggested that variation in digit ratio (i.e. the relative length of the second to the fourth toe) might be an indicator of the action of sex steroids during embryo development, as is widely assumed for human digits. Zebra finch digit ratio was found to vary with offspring sex, laying order of eggs within a clutch, and to predict aspects of female mating behaviour. Hence, it was proposed that the measurement of digit ratio would give insights… 

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