Latest news from the School of Biological Sciences Latest news from the School of Biological Sciences

Back

University of East Anglia research shows how females choose the 'right' sperm

Scientists at UEA's School of Biological Sciences have revealed how females select the 'right' sperm to fertilize their eggs when faced with the risk of being fertilized by wrong sperm from a different species.

Researchers investigated salmon and trout, which fertilize externally in river water. The two species occasionally hybridize in the wild, but since hybrid offspring become reproductive dead-ends, females of both species are under selection to avoid hybrid fertilizations, and instead promote external fertilization by their own species’ sperm.

Read more.