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Signalling requires a response form other animals

Posted by Peter-Apps on 18 Jul 2014 at 14:38 GMT

While you have demonstrated that lowland gorilla silverbacks smell differently (to humans) according to what they are doing, the claim that this is a signal is premature. You need to show that other gorillas respond to the smells in a way that makes biological sense; if the odours' biological role favours the receivers then the odours may be cues, if they favour both sender and receiver they can usefully be called signals.

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