Which butterfly has transparent wings? Detailed answer

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Which butterfly has transparent wings? Detailed answer

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Which butterfly has transparent wings?

Some Lepidoptera species of the Greta genus, common in America, have almost completely transparent wings, and the most famous example is the Greta Oto butterfly. This effect is achieved due to the presence of special nanostructures in the tissues of the wing, which greatly reduce the reflectivity. Together with low rates of absorption and scattering of light passing through the wing, this ensures transparency.

Authors: Jimmy Wales, Larry Sanger

Random interesting fact from the Great Encyclopedia:

What football player once played in the FA Cup final with a broken neck?

In the 1956 FA Cup Final, Manchester City goalkeeper Bert Trautmann was injured 15 minutes before the end of the match after a Birmingham striker kneed him in the neck. However, Trautmann decided to continue the game and helped his team to defend the winning score. After continuing to be in pain for several days, he was x-rayed, and it turned out that he played out that match with a broken neck.

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Random news from the Archive

neurons of loneliness 24.02.2016

Loneliness affects the cellular structure of the brain, strengthening the connections between certain neurons and causing them to react violently to social contacts.

While studying the effect of drugs on dopamine neurons in mice, Gillian Matthews and her colleagues noticed that in animals that sat in isolation for 24 hours, interneuronal connections increased in the so-called dorsal raphe nucleus, and increased connections occurred in those mice. who did not receive any drugs. (The nuclei of the suture are clusters of neurons located in the midline of the medulla oblongata, they are divided into several groups according to their structure and functions, but in general this area of \uXNUMXb\uXNUMXbthe brain has not been studied very well.)

Further experiments confirmed that the cells of the dorsal nucleus do indeed respond to the lack of communication - it is known that strengthening of connections, strengthening of interneuronal synapses occurs when the nerve chain is active, when a signal runs along it, and strengthening of synapses during loneliness indicated that local neurons respond to social isolation.

However, there was one feature in their behavior: if the mouse was kept together with comrades, then the neurons of the nucleus did not work very hard, but if the mouse moved from a solitary cell to a company, then the activity of the neural circuits of the dorsal nucleus increased sharply, although not for long.

In other words, neurons seemed to become more sensitive to social cues during isolation. This was also manifested in behavior: the mice released from the "loners" were more sociable than those that did not sit there. If the activity of nerve cells was suppressed artificially, then the animals did not show any burst of social activity.

Curiously, the behavioral response accompanying changes in the functioning of neurons in the dorsal raphe nucleus also depended on the social status of the mouse itself: those who occupied a higher position in the group began to communicate especially strongly after a period of forced loneliness. In general, everything is like with people: among Homo sapiens, the most popular "individuals" also do not think of themselves outside of society, well, and those who are not very popular generally sometimes prefer to stay in some deserted place - all the worries are less.

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