Just like English speakers in the Caribbean audio different from English speaker in England or the U.S. , Caribbean hulk have a clear-cut regional accent . A new study on whale vocalizations publish in the journalRoyal Society Open Scienceshows that Caribbean sperm cell whales all utilize a sure acoustic pattern that ’s not see outside of the region .
Over the line of six eld , investigator chair by Shane Gero of Aarhus University in Denmark listened to whale swimming along the west coast of Dominica , an island just north of Saint Lucia and Barbados . They immortalise calls , also get it on as codas , from nine different social groups .
Then , they categorize the clicking vocalizations — which go kind of like morse code — decide which patterns were consistent across the groups . Some , they find , were extremely varied and singular to individual — their own calling card , similar to a name of sort ( though that does n’t entail the whales necessarily make them specifically for that intent ) . Other call patterns were used only within the rank of one seedcase . But the most common finale was hear across all the whales , no matter what years , size of it , or social unit . Different from the acoustic cry of whales in the Pacific Ocean , this call act as kind of a regional accent .
All the whales execute this call — described by the researcher as voice like a “ click-[PAUSE]-click-[PAUSE]-click - click - click”—so identically that the researchers could n’t identify which whales were reach which sounds . These exact coda were made by all the social groups in the study , and have long been learn in Caribbean hulk . The researchers compose that they " have reign repertoire in this population for at least 30 years , ” as observed in previous work . Though the “ 1 + 1 + 3 ” rhythm of the call has never been observed in Pacific whale or in other areas of the Atlantic , even the vernal heavyweight from the eastern Caribbean made them in the same way , suggesting that it ’s a culturally find out call .
[ h / tHakai ]
