What sound does the world's largest frog make? Detailed answer

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What sound does the world's largest frog make? Detailed answer

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What sound does the world's largest frog make?

No. And certainly not "ribbit".

The three-foot goliath frog from Central Africa is mute.

To date, 4360 species of frogs are known, but only one of them screams "ribbit". Each individual has its own, unique call. The reason we think all frogs say "ribbit" is because "ribbit" is the sound of the Pacific tree frog (Hyla regilla). This is the kind of frog that lives in Hollywood.

Recorded in natural habitats, this croaking has been accompanying Dream Factory films for decades - to give color to anything, just everything in a row - from the swamps of Florida to the Vietnamese jungle.

Frogs make a variety of sounds. They croak, snore, grunt, trill, cluck, chirp, ring, hoot, whistle and growl. They can produce sounds reminiscent of cows, squirrels, or crickets. The barking tree frog yelps like a dog; the carpenter frog knocks like two carpenters driving nails apart; Fowler's toad makes a sound reminiscent of the bleating of a sheep suffering from a severe cold. The South American paradoxical frog (Pseudis paradoxa) generally grunts like a pig (and it is paradoxical because its tadpoles are three times larger than its mother).

Female frogs are mostly silent. And all the hubbub so familiar to us is created by males who advertise themselves to potential spouses. The loudest frog in the world is the tiny coqui from Puerto Rico; its Latin name, Eleutherodactylus coqui, is longer than the body of the screamer itself. Koki males gather in dense forests - one per ten square meters - and compete among themselves who will make the loudest call. At a distance of a meter, the force of the produced croak reaches ninety-five decibels - about the same as that of a jackhammer, and very close to the pain threshold of a person.

Recent research has finally unraveled the mystery of how a frog's eardrums don't burst with such force of croaking. It turns out that frogs listen with the help of their lungs. By absorbing vibrations, the lungs equalize internal and external pressure on the surface of the membrane, protecting the frog's sensitive inner ear.

The principle of operation of frog croaks is similar to the principle of radio stations: each species chooses its own frequency. Therefore, everything that you and I hear - a forest or the surroundings of a pond filled with dissonance of competing tree frogs - practically does not distract the lady frogs, which tune in exclusively to the sounds produced by males of the same species.

Internationally, it is generally accepted that frog sounds are most similar to duck quacking. But not everywhere. In Thailand, for example, frogs say "ob-ob", in Poland - "kam-kam", in Argentina - "burp"; Algerians make the sound "gar-gar", similar to the Chinese "gvo-gvo"; Bengali say "gangor-gangor"; Hindi - "me: ko: me: k-me: ko: me: k" (the colon here indicates that the previous vowel sound is long and is pronounced in the nose); the Japanese call "keroke-ro" and the Korean call "ge-gul-ge-gul".

Author: John Lloyd, John Mitchinson

Random interesting fact from the Great Encyclopedia:

Which Decembrist was exiled from Siberia back to the European part of Russia?

In 1856, all the exiled Decembrists were pardoned, and many of them returned to Moscow. However, Dmitry Zavalishin, a former naval officer, was in no hurry to return - living in Transbaikalia, he actively published on political topics, exposing the abuses of the local administration. In this regard, at the request of the Governor-General Muravyov-Amursky, Zavalishin was exiled from Chita back to the European part of Russia by a royal decree in 1863.

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The benefits of sex for athletes 20.10.2016

Laura Stefani from the University of Florence (Italy) and her colleagues analyzed and summarized data from scientific publications on the impact of the sexual life of athletes on their performance. They came to the conclusion that the prejudice that sex before the start is harmful is nothing more than a ridiculous myth.

The notion that sexual intimacy before a competition negatively affects athletes has existed since ancient times. Back in the XNUMXst century AD. the ancient Roman physician and philosopher Areteus of Cappadocia wrote that male power can weaken, transforming into a seed. Even earlier, the Greek philosopher Plato condemned the Olympians who practiced intimacy on the eve of the competition.

Nowadays, such an opinion exists, for example, among football coaches, and fans of the film about Rocky remember his mentor's warnings that "women make legs weak."

Scientists have analyzed more than 500 different scientific publications relating to the relationship of sex with physical activity. Surprisingly, there are practically no works dealing with this problem in detail. Of the nine studies that have been published over the past 60 years, researchers have found that none address this question systematically.

The researchers concluded that sex the night before a competition may even have a positive effect on athletic performance.

"In general, there is an overall positive effect of sex the night before a competition on an athlete's performance, especially from a psychological point of view. Sex has a relaxing effect that can help reduce stress, increase endurance (important for marathon runners) or concentration (when shooting)" , the authors write.

However, the researchers caution that the available material is somewhat ad hoc and there is still no reliable data on the correlation between sex and fitness.

Scientists talk about the positive impact of sex at least ten hours before the start, provided that the athlete does not smoke or drink alcohol.

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