Scientists from the University of Maryland have discovered a hidden sensory talent in geckos that helps them sense low-frequency vibrations in the range of 50 to 200 Hz. The results of the study were published in the journal Current Biology (CB).
Research has shown that in geckos, the so-called “auditory sixth sense” is associated with the functioning of a special area of the inner ear called the sacculus. Usually its work is associated with maintaining balance and body position. Biologists have found that geckos use the sacculus to detect low-frequency vibrations in the range of 50 to 200 Hz, which is significantly lower than the limits perceived by their “normal” ears.
According to scientists, the sacculus allows geckos to sense vibrations transmitted through various media, such as soil or water. Other animals, such as amphibians and fish, perceive information in a similar way.
The researchers noted that lizards and snakes are considered “mute” or “deaf” due to the lack of sounds they make. However, a new discovery indicates that reptiles are actually capable of detecting subtle vibrations and may be using them to communicate. If this hypothesis is confirmed, biologists will need to rethink their views on the evolution of sensory systems in animals.
