The aim of this review is to consider the potential benefits that females may gain from mating
more than once in a single reproductive cycle. The relationship between non-genetic and …

Theory suggests that male fitness generally increases steadily with mating rate, while one or
a few matings are sufficient for females to maximize their reproductive success. Contrary to …

The past decade has seen a profound change in the scientific understanding of
reproduction. The traditional view of reproduction as a joint venture undertaken by two …

Sperm competition was identified in 1970 as a pervasive selective force in post‐copulatory
sexual selection that occurs when the ejaculates of different males compete to fertilise a …

The female reproductive tract is where competition between the sperm of different males
takes place, aided and abetted by the female herself. Intense postcopulatory sexual …

Because the costs and benefits of polygamy differ for males and females, copulation is not
always a cooperative venture between the sexes. Sperm competition can build on this …

Individuals within social groups often show consistent differences in behaviour across time
and context. Such interindividual differences and the evolutionary challenge they present …

The aim of this study was to establish whether the mobility of sperm of the domestic fowl, as
measured by an in vitro assay, predicted the outcome of sperm competition. Thirteen pairs of …

In this paper, I consider the criteria necessary to demonstrate the postcopulatory ability of
females to favor the sperm of one conspecific male over another, that is, sperm choice. In …

Evolutionary and plastic responses by males to the level of sperm competition (SC) are
reported across widespread taxa, but direct tests of the consequences for male reproductive …