Adaptive sex allocation by brood reduction in antechinuses

  title={Adaptive sex allocation by brood reduction in antechinuses},
  author={Andrew Cockburn},
  journal={Behavioral Ecology and Sociobiology},
Antechinuses (Dasyuridae: Marsupialia) exhibit dramatic interpopulation variation in the sex ratio at birth, a pattern which has previously been interpreted in terms of both local resource competition and Trivers/Willard effects. However, Antechinus stuartii usually fail to wean all the young that attach to their teats. At least in captivity, this is because they often eat their young. In free-living populations, brood reduction affects sons and daughters differently. Mothers virtually always… CONTINUE READING