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Sexual dimorphism in immune defense.

A P Møller1, G Sorci, J Erritzøe

  • 1Laboratoire d'Ecologie, CNRS URA 258, Université Pierre et Marie Curie, Bât. A, 7ème étage, F-75252 Paris Cedex 05, France.

The American Naturalist
|September 25, 2008
PubMed
Summary

Male birds often have smaller spleens than females, especially when sexual competition is high. This suggests sexual selection impacts immune function and may explain sex differences in parasite infections.

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