Sexual cyclicity in captive lowland gorillas.


Oppositely sexed pairs of gorillas exhibit some behavior indicative of higher cognitive functioning, such as individual partner preferences and varied copulatory positions, but also mate in a cyclic manner closely related to the degree of female genital swelling. The latter finding is contrary to predictions based on their advanced position in phylogeny. 


Cite this paper

@article{Nadler1975SexualCI, title={Sexual cyclicity in captive lowland gorillas.}, author={Ronald D. Nadler}, journal={Science}, year={1975}, volume={189 4205}, pages={813-4} }