You would think so It would be easy to spy on resource dolphins. This species is found on almost every coast of the world. Their bright heads and grayish gray and white pattern make them one of the most recognized animals of the sea. And like other cetaceans, they travel in groups and chitchat constantly: clicks, buzzes, and whistles help them realize their existence underwater. Their social world is a golden one.
“They’re a very vocal species,” says Charlotte Cure, a bioacoustics expert. “Words are very important to them.”
Cure works at the Joint Research Unit in Environmental Acoustics in France, where he discovers how Cetaceans use the sounds of their environment to make intelligent decisions. Dolphins are known to communicate directly with each other and resonate with their prey before hitting. But many years ago, he was surprised that they could also take messages from other dolphins that weren’t intended for them.
But the problem is, even though Dolphin is gossipy, neither Karu nor Flavor Visa, his colleagues, and Riso’s expertise in the language speak this language. So instead of keeping an eye on what the dolphins seem to be saying, they have focused their attention. Move. In their experiment, Cure’s team tested how dolphins respond when researchers parked their boats overhead and played recorded social sounds from other groups.
After four years of field study, Kurer’s team reported their results: The first evidence of the Sitasians tracked each other and used that information to determine where to swim next. For example, male social recordings, known for annoying females, calves, and other males, have driven most dolphins away. Their research appeared last month Animal knowledge.
According to Caroline Cassie, a marine mammal acoustic communication expert at UC Santa Cruz, the work is a masterclass of animal spying who was not involved in the study. “It’s just like humans,” he said of the dolphin’s cries. “And I like when tests can show us what seems clear, but has never before appeared in an animal that is quite elusive.”
After all, while reserve dolphins are easy to find, their secrets are hard to hear. But since Sitasians are so intelligent and language dependent, studying their communication can help us understand the origin of our own language. More practically, knowing how to lure and chase these dolphins suggests a new tool for their conservation.
Not dolphins Only noisy, noisy animals. Scientists have proven that male red-winged blackbirds, which collide regionally, keep an eye on each other’s fights to anticipate the aggression of a potential opponent. The females of the female singing song examine the male singing competitions, then cheat with their mates with the more influential Twitter. Birds and bats also talk deliciously when looking for mates and food. In each case, the researchers suspect that the voice triggers some familiar behavior. So to test how animals react, researchers run recordings of those words on speakers and see what happens.
But the Cure team was curious about animal contact below sea level and it was even more mysterious. Until about a decade ago, researchers did not have the proper equipment to prove that mammals in such large seas could hear and respond to distant chatter. “Now we have some tools,” Kure said. In addition to a boat with underwater speakers, researchers used drones to track movement from overhead, as well as tag-suction-capped acoustic sensors to identify their test subjects.
They followed about 14 separate dolphins and groups of dolphins that they tagged off the coast of Azores Teresira Island. Dolphins will usually swim in a straight line. But Kuru speculated that words expressing social information could distract them. Sitting in the “playback vessel” he would hear three kinds of sounds. One was the climbing and buzzing of dolphins – a “dinner bell” was supposed to be an interesting signal that others would swim. Another recording contained the men’s social whistle and the words “exploding pulse”, which was thought to be a threatening signal that women and competing men would resist. They used to scold women and calves for being neutral.