Size doesn’t matter for crayfish’s one-two crunch

Biological deception may give crustaceans an advantage during a fight

By Rebecca Cheung, 16:13 PM March 13, 2012

When it comes to male crayfish, not all claws are created equal. In these crustaceans, the left and right claws might be very different sizes — and the larger one isn’t necessarily stronger, researchers report online March 14 in Biology Letters.

This deceptiveness could help crayfish bluff or trick an opponent during a fight, says study coauthor Robbie Wilson, a biologist at the University of Queensland in Brisbane, Australia. What’s more, the findings suggest that within a species, “dishon...

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