Claw waving display changes with receiver distance in fiddler crabs, Uca perplexa
Effective communication is critically dependent on the successful transfer of information and, because environmental and social conditions can affect signal transmission, animals should be able to adjust their signals to optimize reliability. We show, apparently for the first time in a movement-based signal, that visual displays are adjusted with respect to the distance of signal receivers. Not only does this show the ability of the fiddler crab to judge distance, but this also shows that...[Show more]
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