Testis weight, body weight and breeding system in primates

@article{Harcourt1981TestisWB,
  title={Testis weight, body weight and breeding system in primates},
  author={A. Harcourt and P. Harvey and S. Larson and R. Short},
  journal={Nature},
  year={1981},
  volume={293},
  pages={55-57}
}
It has long been known that primate species differ greatly in the weight of their testes relative to body weight1. Recently it has been suggested that among the three species of Pongidae (the great apes), the disparity in testes weights is associated with their different breeding systems2–4. Male gorillas and orangutans copulate infrequently, and when a female comes into oestrus she normally mates with only one male. However, in the chimpanzee, several males mate frequently with the oestrous… Expand
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