News tagged with sex ratios

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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Competing for a mate can shorten lifespan

"Love stinks!" the J. Geils band told the world in 1980, and while you can certainly argue whether or not this tender and ineffable spirit of affection has a downside, working hard to find it does. It may even shorten your ...

dateAug 09, 2010 in Other
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