9 - Science News / It's Not Just His Croak

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Science News / It’s Not Just His Croak http://www.sciencenews.org/view/generic/id/42088/title/It%E2%80%. .. 1 of 2 3/29/09 11:10 PM Home / News / News item By Susan Milius Web edition : Tuesday, March 24th, 2009 FROG COMPUTER DATING. A female European tree frog watches a video, dimmed to simulate a moonlit night, showing a courting male. Offered pairs of videos, females showed a preference for certain male coloration, even though frogs mate at night. Doris Gomez and Marc Théry Enlarge FROG COMPUTER DATING http://www.sciencenews.org/view/generic/id/42088 IT’S NOT JUST HIS CROAK Even at night, female tree frogs prefer males with redder vocal sacs Coloring matters. Even to frogs that court in the dark. European tree frogs choose their mates at night, but a matchmaker video test finds that females still care about a guy s coloring, says Doris Gomez of France s National Museum of Natural History in Brunoy. More females hopped over to a video of a male with extra red-orange in the vocal sac of his throat than to a rival video of a male with a paler sac, Gomez and her colleagues report online March 24 in Proceedings of the Royal Society B . Males with a darker stripe down the side of their body proved more popular too. Many studies have focused on how frog croaking attracts mates. “Relative to that
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9 - Science News / It's Not Just His Croak

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