News tagged with sex ratios

Humans threaten Asian horseshoe crabs

Human activity is affecting the population of Asian horseshoe crabs in the state of Sabah in Malaysia, possibly by disrupting the male to female ratio – that is the conclusion of a study that surveyed two ...

dateJun 22, 2015 in Plants & Animals
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Manipulative mothers subdue show-off sons

The gaudy plumage and acrobatic displays of birds of paradise are a striking example of sexual selection, Charles Darwin's second great theory of evolution. But new research shows that this powerful process may collapse when ...

dateSep 12, 2011 in Evolution
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Early spring means more bat girls

There must be something in the warm breeze. A study on bats by a University of Calgary researcher suggests that bats produce twice as many female babies as male ones in years when spring comes early.

dateMay 05, 2012 in Plants & Animals
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