Behavioural ecologists and evolutionary biologists have long been interested in the biological implications of sperm from different males competing for fertiliz

In species with internal fertilization, sperm competition occurs when the sperm of two or more males simultaneously occupy the reproductive tract of a female an

In species with internal fertilization, sperm competition occurs when the sperm of two or more males simultaneously occupy the reproductive tract of a female an

This classic work on the rules of sex -- updated for a new generation -- is still as provocative as the day it was published, providing simple explanations for

Sperm Competition and the Evolution of Animal Mating Systems describes the role of sperm competition in selection on a range of attributes from gamete morpholog