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"Here, Paddy, Paddy! C'mere!" Dolphin image via Shutterstock

Study finds dolphins use names to call each other

Each dolphin creates its own signature whistle in the first few months of life and then swims around announcing themselves so others learn it.

WILD BOTTLENOSE DOLPHINS design unique signature whistles to identify themselves, and they answer when a close cohort calls them by name, researchers said today.

A study of 200 bottlenose dolphins off the eastern coast of Scotland found that they are the only non-human mammals to use the names of those in their close circles to get each other’s attention.

“It is the first evidence we really have of naming and labeling in the animal kingdom,” said lead author Stephanie King of the Sea Mammal Research Unit in the School of Biology at the University of St. Andrews in Scotland.

“I think it draws some quite interesting parallels between dolphin and human communication, which is something people had thought was the case but hadn’t been experimentally proven until now,” she told AFP.

Scientists have previously found that each dolphin creates his or her own signature whistle, or name, in the first few months of life.

Then, they spend a lot of time swimming around and announcing themselves.

About half of a wild dolphin’s whistles are its own signature whistle, King said.

But King and her co-author Vincent Janik wondered what would happen if a dolphin heard someone else calling out his or her signature whistle.

So they recorded a group of dolphins and played back the sounds of their name whistles, one by one.

Responding to their names

“Interestingly, the animals would only respond and only react when they heard their own whistle,” said King, whose study appears in the Proceedings of the National Academy of Sciences, a US journal.

“They would then call back very quickly and sometimes multiple times, and they did not respond that way to any of the other whistles we played.”

Researchers tried different ways of playing back the sound, both by preserving the voice of the dolphin and by stripping all voice features so it would sound like another dolphin calling out a specific name whistle.

They also played control whistles of unfamiliar dolphins from different populations, as well as the signature whistles from the same population.

“When an animal hears a copy of its whistle it will call back, it will reply very quickly and it doesn’t do that for any other whistle type,” said King.

“The results were striking,” she added. “We actually saw a really strong response. The animals would always call back, sometimes multiple times to hearing their own whistle.”

Parrots

Other animals, including songbirds, bats and parrots, have been shown to be capable of copying sounds in their environment and developing a distinctive repertoire of calls.

But only parrots and dolphins use labels that they have learned for other objects or creatures.

King said her research shows that dolphins call each other by name in their own social circles, such as between mother and calf or from one male friend to another.

“Animals are really using this when they want to reunite with a specific individual,” said King.

Since dolphins appear to be whistling their own names about half the time, the next big question is to figure out what else they are talking about, said King.

“We don’t know what the other 50 percent is used for,” she told AFP. “That is the next step, really, for dolphin communication research.”

- © AFP 2013.

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    Mute Fergal Kelly
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    Jul 22nd 2013, 8:46 PM

    They are the coolest animals going! Fantastic

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    Mute Jamie McCormack
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    Jul 22nd 2013, 11:42 PM

    Even cooler than penguins?

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    Mute A.G
    Favourite A.G
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    Jul 23rd 2013, 5:00 PM

    Nah, penguins live in a colder climate. Definitely cooler!

    5
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    Mute bob®
    Favourite bob®
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    Jul 22nd 2013, 8:46 PM

    Names like,”ya dirty blow hole” and “bottle face”were forms of the porpoise bullying on the marine social media site “whale face”

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    Mute Ian Walsh
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    Jul 22nd 2013, 11:21 PM

    Dolphin says: I’m away off to get a tattoo of a white woman on my left flipper

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    Mute Barry Kelly
    Favourite Barry Kelly
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    Jul 22nd 2013, 9:15 PM

    So long and thanks for all the fish!

    36
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    Mute bob®
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    Jul 22nd 2013, 10:18 PM

    Douglas Adams is God!

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    Mute Arthur Callaghan
    Favourite Arthur Callaghan
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    Jul 22nd 2013, 8:53 PM

    dolphins were always smart but yet we still now very little about them.

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    Mute Jamie McCormack
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    Jul 22nd 2013, 11:39 PM

    They know a lot about us though. A lot.

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    Mute Conor Hickey
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    Jul 22nd 2013, 10:38 PM

    What’s that flipper? Skippy started a bushfire?

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    Mute Anthony Byrne
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    Jul 23rd 2013, 1:16 AM

    Yea and he took my ball, and he stole a can of 4X and, and, and ….

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    Mute Kardia Skepsi
    Favourite Kardia Skepsi
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    Jul 22nd 2013, 8:56 PM

    Dolphin: I’m John, got any fish?

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    Mute Marilyn Maroney
    Favourite Marilyn Maroney
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    Jul 22nd 2013, 11:58 PM

    They call him flipper, flipper, faster than lightning……….you have to be a yank, and old to know this , I think

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    Mute Síle
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    Jul 23rd 2013, 3:13 PM

    Or Irish and old(ish). . Flipper was my favourite TV show as a kid

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    Mute Popeye
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    Jul 22nd 2013, 8:54 PM
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    Mute Kieran Casey
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    Jul 23rd 2013, 9:50 AM

    I do alot of scuba diving and i often hear they calling each other popular names are Flipper,Nemo,and Tom……

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    Mute Colleen McGovern
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    Jul 22nd 2013, 11:33 PM

    Awe now don’t start confusing the adorable critters

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    Mute Joseph C. Brady
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    Jul 23rd 2013, 4:57 AM

    I knew it

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    Mute Gary.
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    Jul 23rd 2013, 10:29 AM

    Dolphins besides humans are the only other mammals the procreate for fun.
    Also it has been discovered that male dolphins in packs rape female dolphins. Crazy but true.

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    Mute Mal
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    Jul 23rd 2013, 9:30 AM

    I was watching a documentary about parrots some time ago; they said some parrots have the same level of intelligence as a 3 to 4 year old child.
    And, as above, not only are they capable of applying labels to things, but they are capable of reasoning when the tasks/requests get more complicated.
    In the tests they taught the parrots about various colours as well as objects like, balls, keys, toy cars etc….
    Not only could the parrots distinguish between the various objects, but when asked to “get the red key” or “get the blue ball” they had no problems figuring out which was which, even though they didn’t used coloured objects when teaching the words to the parrots.
    It was very impressive.

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