University of Manchester scientists have discovered significant concentrations of microplastics in the male reproductive ...

How do behavior, morphology and physiology act in concert to improve a male's reproductive success - and why is there so much variation among outcomes within and between species? Aa Aa Aa ...

Animals with internal fertilization also experience sperm competition. Several mechanisms have evolved to facilitate a male's reproductive success with females that have multiple mates.

University of Manchester scientists have discovered significant concentrations of microplastics in the male reproductive ...

Pacific salmon die after spawning. This is because they put all their energy into reproducing and then age and die quickly ...

Since it is difficult to conduct experiments on animals with long life ... genetic manipulation to produce male and female turquoise killifish without reproductive cells. Both grew to larger ...

This bias was particularly pronounced in neuroscience — one 2009 review found that studies with exclusively male lab animals outnumbered those with females 5.5-to-1.

The stingray that went viral after miraculously becoming pregnant at a North Carolina aquarium despite not having shared a tank with a male companion ... contracting a rare reproductive disease ...

"We are currently assessing exposure of short term (several weeks or less) androgens on reproductive parameters of female ...