A study has found that dolphins are unable to communicate as effectively when exposed to human-generated noises, forcing them to change their sounds much like people do when shouting
An international team of researchers from the University of Bristol, the Dolphin Research Center, Syracuse University, the Woods Hole Oceanographic Institution, Aarhus University, and the University of St. Andrews collaborated on the study, which was published in Current Biology on Thursday “We wanted to investigate how noise impacts animals working together,” said Pernille Sørensen, first author of the paper and PhD candidate at the University of Bristol, in an interview with CNN.
The dolphins were asked to perform the task both under ambient noise conditions and under four “noise treatments” meant to simulate human-made underwater noise pollution. A total of 200 trials were conducted with the dolphin pair, with each dolphin wearing an acoustic tag that recorded its sound production. The findings were twofold, said Sørensen. First, they found that the dolphins used “compensatory mechanisms” to make up for their hindered vocal communication.
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