Contact: Lisa Horton
University of East Anglia
Caption: University of East Anglia scientists 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. They found that when eggs from each species are presented with either salmon or trout, they allow fertilization by either species' sperm. But if eggs are given a choice of both species' sperm, they favour their own species'.
Credit: University of East Anglia
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Related news release: University of East Anglia research shows how females choose the 'right' sperm