Posted in April 2011

Parasites give snails an incentive for sex

Parasites give snails an incentive for sex

Among the New Zealand mud snail (Potamopyrgus antipodarum), some do it, some don’t. Have sex, that is. Just how many snails live the sexual life is determined, in large part, by how many snails in the population are infected by parasites, according to new research by Kayla King, Jukka Jokela, and Curtis Lively. The findings … Continue reading

Evolution of genes for shorter pregnancy

Evolution of genes for shorter pregnancy

Five studies released this week focus on different aspects of reproduction, from advances in in vitro fertilization, to understanding how genes are regulated during early development (and how this could affect cancer later) and why human eggs are prone to mistakes that cause birth defects, especially in older women. Another study even discovered a way that  stress during … Continue reading

New research throws male fertility a bone

New research throws male fertility a bone

We’ve all heard that ‘milk does a body good’, but now there’s new incentive for men, in particular, to keep their bones healthy. New research has found that a hormone produced by bones is needed for testosterone production in males. In a paper published in the journal Cell on March 4, scientists showed that male mice that don’t … Continue reading

Love is (sometimes) a battlefield

Love is (sometimes) a battlefield

Ladies, how much influence do your (male) mates have over you? If people are anything like insects, it might be more than you realize. Thankfully, humans aren’t quite insects. In the fruit fly (Drosophila melanogaster), males have a considerable amount of control over their mates. And they keep exerting their control long after they’ve moved on … Continue reading