Scientists record first known sound sharks
Clicklike noise made by a small shark species depicting the first instance of a shark that actively produces sound
Rig (Mustelus lenticulatus).
Thank you Jaw‘Pulse-throwing theme, sharks are synonyms of the sound of the spine. Actually, they swim in silence and catch the scarf without making a peep, which is this.
These fish have just broken silence. A team of researchers recorded sharks in a speci, when the animals handled under water making high frequency clicks. Exam results, published this week Royal Association Open Science, represent the sound that actively produces the first appearance of a shark.
The sound saw Marine Nieder, the author of the new study while working in his doctorate. New Zealand at Auckland University. Its project was based on various shark hearing skills, including small species in the coastal waters of New Zealand. But something strange happened when Nieder handled the sharks between the tests: they would start cracking.
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“At first we didn’t have any idea what the shark had not been made of sounds,” Nieder is now in the woods in the oceanographic forest. “I remember coming home and thinking about them more and more.” What they were like. “
Listen to Sharks Crackle:
More than 1,000 fish species are known to create sounds, usually vibrating elevator bladder, the gas station organ, which helps animals make it easier to maintain and act as an amplifier. But the vortices and other sharks have a bladder swim.
To determine whether the sound cracks were creating sound cracks, Nieder and his colleagues put 10 young people, one at the same time in depositives equipped with sound recorders. Researchers studied each furnace in 20 seconds and studied audio recordings.
Each of these sharks produced high-frequency clicks, which only a fraction of a second. Researchers were registered in the first 10 seconds in the last 10 seconds, the sounds were the answers to their manipulators, as Nieder says.
Listen to more high frequency sharks:
CLIK frequencies were mostly outside the Rigs’ listening inside, which is definitely used to communicate sharks. However, the hearing of some of the words that hunt rumors are falling inside. Researchers have observed cod making sounds like to potentially dispose of nearby seals.
Strictly how to click Clicklike sounds without swimming, the team created a three-dimensional reconstruction of the jaws of the fish and teeth. Rigs are flattened by teeth, which are organized by the rows that are arranged so that animals can open crab shells. The team is hypothesis, which mosaics of teeth click on the mosaics as they draw the jaw together.
According to Dennis Higgs, according to the Maritime Biologist at the Windsor University of Ontario, the papers presents a compelling case that some sharks create sounds. However, he believes that more work should be done, however, knowing whether these sounds are just the answer to audio and handling. “Is the open question” Sharks would make noises in more natural situations? “” Says Higgs, who studied the skills of the shark, but not participated in new research.
Nieder agrees and aims to do additional behavioral experiments to learn more about what the shark clicks on. It also expects similar experiments in natural environments and similar experiments with similar shark species.
The new paper introduces the first evidence of a shark, the latest research revealed that the two other kartilaginoso, rays and skates have revealed that they also make noise. Scientists have seen multiple species Wild stingrays both Indonesian and Australia and Rays and skates in the Mediterranean Clicklike noises when divers approached.
Sharks and Stingrays deviated more than 200 million years ago. This, sound production is an ancient feature that is extended between sharks and their cartilaginous relatives.
“Thinking those fish couldn’t, but we’re wrong,” Higgs says. “It’s worth listening to more species of shark.”
