Most people probably think of sperm as the microscopic tadpole-like things wriggling around in human semen. But there is an astonishing amount of diversity in the size, shape and number of sperm produced by male animals. ...
Strain of living with competitive males: Males age faster than females due to brawling in early adulthood
Male badgers that spend their youth fighting tend to age more quickly than their passive counterparts according to new research from the University of Exeter.
Male flour beetles increase their courtship effort and their sperm count if a female smells of other males
Male flour beetles increase their courtship effort and their sperm count if a female smells of other males according to a study published in the journal Behavioural Ecology.
The chance of a male fathering offspring may not be a simple race to the egg, but is influenced by the length of the male's sperm, say scientists from the University of Sheffield.
Common stereotypes would have us believe that men are more competitive and women more cooperative.
A team of researchers has discovered that changes in population density can affect the size of animals' testes and therefore impact on reproduction.
Glossy magazines and TV reality shows often portray males as the gender that strays and females as the gender that's picky.
(Phys.org) —When salmon spawn, males competing to fertilise eggs will win or lose based primarily on their sperm swimming speed, according to a collaborative study by researchers from the University of Otago and the University ...
Imagine if you only had one shot at passing on your genes before you died. It happens more often in the natural world than you might expect: suicidal reproduction – where one or both sexes of a species die after a single ...
When it comes to sex among guppies, competition is high for those at the top of the game. To get around this predicament, a recent study has shown, guppies use trickery.