Offspring sexual dimorphism and sex-allocation in relation to parental age and paternal ornamentation in the barn swallow.

@article{Saino2002OffspringSD,
  title={Offspring sexual dimorphism and sex-allocation in relation to parental age and paternal ornamentation in the barn swallow.},
  author={Nicola Saino and Roberto Ambrosini and Roberta Martinelli and Stefano Calza and Anders Pape M\oller and Andrea Pilastro},
  journal={Molecular ecology},
  year={2002},
  volume={11 8},
  pages={1533-44}
}
We analysed the morphology of nestling barn swallows (Hirundo rustica) in relation to their sex, and laying and hatching order. In addition, we studied sex-allocation in relation to parentage, parental age and expression of a secondary sexual character of fathers. Molecular sexing was conducted using the sex chromosome-linked avian CHD1 gene. Sex of the offspring was not associated with laying or hatching order. None of nine morphological, serological and immunological variables varied in… CONTINUE READING
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