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When meeting alien in the wild , dolphins whistle signature tunes that may be the animal eq of " Hello , my name is … " stickers .
Thesesignature whistleshave been observed in captive dolphinfish for decades , but new research is the first to discover how these ocean mammals apply the sounds when one cod meets another in the sea .
Two bottlenose dolphins put on an acrobatic show.
" It ’s not just ' I ’m so - and - so , ' but the other information also in that whistling is , ' I ’m so - and - so , and I ’m concerned in make middleman in a friendly way , I ’m not attacking , ' " tell subject field investigator Vincent Janik , an expert in animal communication at the University of St. Andrews in Scotland .
Janik and his colleagues used special array of submersed microphones to follow bottlenose mahimahi pods in St. Andrews Bay as they swam around and interact with other groups of dolphin . They used a statistical method acting to tease out figure in signature whistles ( those whistle that dolphins originate as their personalized calling placard ) and secernate those noise from the other chirps and close shave dolphins bring forth . [ Deep Divers : A Gallery of dolphin ]
In cases where dolphin pod get together and swam together , the researchers found , such meetings were preceded by one mahimahi in the mathematical group give rise a signature whistle and another dolphin in the 2d grouping answering . When mahimahi chemical group swim by one another and did n’t join , thesemeet - and - greet whistleswere absent .
The " salutation ritual " may not require every group member to introduce themselves , because dolphin can use echolocation to square up the size of the other radical , Janik recite LiveScience . He and his colleagues were n’t able to pinpoint which dolphinfish mortal made the signature whistles , so they do n’t live if each dolphinfish pod has a depute social chairman or if any mahimahi can shrill up and propose a get - together . It ’s likely that there is no designated leader , Janik said , as dolphin radical tend to be fluid and lack a stable commander - in - chief .
" I think it ’s whoever is interested in say hi , " Janik said .
Thedolphin callsare important because dolphins are one of the few beast that makeup new sounds , Janik say . Social primate know each other from the sounds of their voices , but they do n’t produce key signature identification calls . Dolphins , on the other handwriting , start developing their own whistles at just a few months of eld . They ’re also verbally adept , capable ofmimicking the songsof other creature and even using particular sounds to consult to specific object in captivity , almost as if they ’re using Bible .
" What I found really rewarding is to be out there and see how they communicate amongst themselves , " Janik say . " These are wild grouping that are just doing whatever they ’re doing . It ’s really the first time that we can nail down two item-by-item radical and how they interact in a vocal demesne , which is really nerveless . "
Janik and his colleagues are now studying how the dolphins develop their personalized whistling . They ’re also investigating the hypothesis that the whistle act as a mahimahi ’s name by recording savage dolphin ' signature whistles and play them back to the animals .
" If I replicate a signature whistle of an animal , does the animal react ? " Janik say . " Is it really potential to speak someone by copying the whistle ? "
