The shark has long been considered as silent hunters, but a new research suggests that small rig sharks (Mistylus Lantolats) can make sounds clicking on handling. The evolutionary biologist Carolin Nedear found noise from the accident during a shark hearing test. In the lab trials, Joannil Rigs stopped quickly “click … click” the noise. The results published in the Royal Society Open Science represent the “first documentary of the sound of a shark making”. The Neder recalled: “At first we had no idea what it was, because the shark had no voice to be raised.”
The accidental discovery in the lab
According to the study, the Nedar team placed an underwater microphone in a tank to examine the shark hearing. During the routine handling, a researcher arrived in and heard a clear “click” coming from the shark’s mouth. Rig sharks have wide, flat, CUSP -shaped teeth for crushed Christians, and great snatching of these teeth produces sound.
The Nather then pursued organized trials on ten rig sharks. In repeated tests, each shark is discharged when it is captured. In particular, clicks were frequent in early trials and stopped massively as the shark became addicted. Since the clicks were the strongest during the initial arrest, researchers believe that this can be a voluntary tension or a defensive response. The Nedd has warned that the assumption needs formal examination in natural conditions.
The implications of shark biology and communication
If it is confirmed, these results suggest amazing complications in shark communication. The sharks and their relatives (rays and skates) lack gas -filled bladder lack of gas, which is mostly used to sound bony fish. The shark was considered silent for a long time. Yet the clicks of the vein indicate that sharks can use sound for alarm or communication.
The Nedar also found that the veins only listen to the low frequency (less than ~ 1,000 Hz) less than the human threshold. He noted, “They are sensitive to the power fields, but if you were a shark, I would need to speak louder than the gold fish.” Researchers say more work is needed to see if Rigus Wild clicks as an alarm or a social signal.
