Pumpkin
toadlet frogs are only known case of an animal that continues to
make a communication signal even after the target audience has lost the ability
to hear it
Friday 22 September
2017 12.15 BSTFirst published on Thursday 21 September
2017 10.07 BST
Humans trying to chat each other
up in a noisy nightclub may find verbal communication futile. But it appears
even more pointless for pumpkin
toadletsafter scientists discovered that females have lost the ability
to hear the sound of male mating calls.
An international team from
Brazil, Denmark and the UK has
discovered that the males of two species of tiny orange
frogs continue to make high-pitched calls despite neither females nor males
being able to hear them.
It is believed to be the first
case in the animal kingdom of a communication signal enduring even after its
target audience has lost the ability to detect it.
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