British scientists were able to establish that the grasshoppers Copiphora gorgonensis, the habitat of which are tropical forests of Colombia, have "ears" that includes the same components as human: the eardrum, middle and inner ear. Biologists believe that this discovery can be considered a phenomenal scientific event.
According to "RIA Novosti", the scientists decided to study hearing aid grasshoppers after the discovery of an unusually low frequency of mating trills produced by the males Copiphora gorgonensis, have no resemblance to the high-frequency ultrasonic serenades other representatives of orthopterous insects.
Using x-ray micro, the study authors conducted a "knockout" ears grasshoppers, and using a laser vibrometer measurement of acoustic properties. It turned out that the structure of the organ of hearing, the length of which is not more than 600 μm, similar to the human ear in the presence of the tympanic membrane, involved convert air vibrations into mechanical vibrations, as well as analogues of the middle and inner ear, providing a transform these vibrations into nerve impulses.
Detection of unusual authority Copiphora gorgonensis pushed scientists to suggest that other species of tropical grasshoppers may have similar ears. They found that some other insect species in Colombian forests use a similar "ears", capturing the ultrasound with a higher frequency of 150 kHz (at 23 kHz at Copiphora gorgonensis).
According to the statement of scientists, studying the ears grasshoppers will help when creating a miniature hearing aid with the ability to accurate recognition of sounds. They argue that the discovery will play a role in the development of an ultra sound sensors and changing perceptions about hearing insects.