echolocation
எதிரொலி இடமாக்கம்
definition
noun
Many odontocetes can navigate by echolocation , producing sound waves using a complex system of nasal sacs and passages, and using the echoes to navigate.
the location of objects by reflected sound, in particular that used by animals such as dolphins and bats.
example
It's been known since the 1930s, with the discovery of bat 'echolocation' , that animals can produce pitches too high for human hearing.
Flying foxes use their excellent eyesight more than 'echolocation' , or bouncing sounds, to locate their food at night.
Toothed whales, such as dolphins, rely on this auditory sense when hunting prey by 'echolocation' .
For example, 'echolocation' by bats and toothed whales is dependent on the sound transmission properties of air and water that can change with temperature or density.
The rivers used by most platanistids are muddy, and these animals probably rely on 'echolocation' more than vision to locate their prey.
Many odontocetes can navigate by 'echolocation' , producing sound waves using a complex system of nasal sacs and passages, and using the echoes to navigate.
But the whale's skull indicates it couldn't produce ultrasonic signals - meaning it didn't use sonar or 'echolocation' , like some dolphins and certain whales do today.
Horseshoe bats have a special kind of 'echolocation' (termed ‘high duty cycle’), which allows them to use the Doppler shift to detect the flutter of moth wings.
Bats are not the only animals that use 'echolocation' .
Sharks have an acute electric sense with which they can detect prey, dolphins can detect characteristics of objects from a distance using ultrasonic 'echolocation' , and crabs perceive water depth by sensing water pressure.
You can imagine, for instance, the way certain animals use 'echolocation' to find a target or source.
Like bats, dolphins use 'echolocation' , an internal sonar system, to help them navigate, avoid predators and find food.
Some bats, for example, which navigate by 'echolocation' , both emit and hear sounds with frequencies of more than 100 kHz.
But their hearing and 'echolocation' is the greatest almost of any animal.
This structure may help focus the sound emitted by these animals in 'echolocation' and feeding.
Moths typically go into erratic dives when they sense that they have been detected by nearby bats using 'echolocation' .
An additional explanation for the absence of either mode in Microchiroptera is their reliance on 'echolocation' , and their need to maintain regular sensory input.
Research suggests that noise from whale watching boats may interfere with the animals' 'echolocation' and communication, making it more difficult for them to hunt for fish.
Credits: Google Translate
