Subscribe
 
 

Video: Crayfish Urine Sparks a Lover's Tiff

29 March 2010 7:00 pm
Comments

Thumbnail of crayfish

This item requires the Flash plug-in (version 8 or higher). JavaScript must also be enabled in your browser.

Please download the latest version of the free Flash plug-in.

Credit: Fiona C Berry and Thomas Breithaupt, University of Hull, U.K.

Strange courting rituals run rampant throughout the animal kingdom, but female signal crayfish (Pacifastacus leniusculus) may take rank for their cruel mind games. Videos of the fish reveal that females release pheromones in their urine to attract suitors but that when a male arrives, she fights him. The authors, reporting today in BMC Biology, suggest the females may use these unconventional tactics to access the strongest and most fit mates. Those males who are rough and tumble enough to overcome the feisty females win access to her eggs.

Posted In: 

What's New