Territorial Conflict May Explain Male Primates’ Large Size

The significant size difference between male and female primates might be attributed, at least in part, to the pressures arising from conflicts with neighboring groups, rather than solely to competition among males within their own social unit.

English Translation:

The significant size difference between male and female primates might be attributed, at least in part, to the pressures arising from conflicts with neighboring groups, rather than solely to competition among males within their own social unit.