Not every sperm is sacred: Longer-lived sperm produce healthier offspring

(University of East Anglia) Males can produce hundreds of millions of sperm within a single ejaculate depending on the species. Does it matter then which sperm is actually fertilizing the egg? New research shows that selecting for longer-lived sperm results in offspring with better survival prospects early in life and higher quality as adults. The study by UEA, UK and Uppsala University, Sweden, could have major implications for adaptive evolution and research into assisted fertilization technologies, such as IVF.

from EurekAlert! - Social and Behavioral Science http://ift.tt/2uJJZ5V