Why mice have longer sperm than elephants
Thursday, November 19, 2015 - 05:07
in Biology & Nature
In the animal world, if several males mate with the same female, their sperm compete to fertilize her limited supply of eggs. Longer sperm often seem to have a competitive advantage. However, a study conducted by researchers from the Universities of Zurich and Stockholm now reveals that the size of the animals also matters. The larger the animal, the more im-portant the number of sperm is relative to sperm length. That's why elephants have smaller sperm than mice.