Which insect males steal wedding gifts from other males by mimicking a female? Detailed answer

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Which insect males steal wedding gifts from other males by mimicking a female? Detailed answer

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Which insect males steal wedding gifts from other males by mimicking a female?

One of the species of scorpion flies, Hylobittacus apicalis, has been described as entertaining mating relationship. For mating, the male must necessarily present prey to the female as a gift, and the larger the prey, the higher the likelihood of mating. The female eats prey in the process, and if there is still not very much food, mating is completed before the moment of insemination. Males sometimes do not get prey on their own, but steal it from mating pairs. Some males act even more subtly - when they see another male with prey, they fly up to him and make movements typical for a female before mating, often receiving a "wedding gift" and flying away with him to look for their female.

Authors: Jimmy Wales, Larry Sanger

Random interesting fact from the Great Encyclopedia:

How did time zones originate?

Until time zones were established, there was a lot of confusion, especially when people used train timetables. To put an end to this confusion, the United States began using a system of standard time zones in 1883. In 1884, an international conference was convened in Washington, D.C. to establish this system throughout the world.

The earth was divided into 24 zones, each of which included 15 degrees of longitude. This was a natural division, since the Earth rotates at a rate of 15 degrees per hour. Within the same time zone, the time is the same, and the difference between adjacent zones is one hour. Greenwich (this is near London, where the observatory is located) in England was chosen as the starting point. If it is noon at Greenwich, then in the first zone to the east of it (in Berlin) it is 13:11. And in the first belt to the west 7 hours. In New York, which is in the fifth time zone from Greenwich to the west, it is 15 am at this time. And in Moscow - east of Greenwich, it's in the evening - XNUMX hours.

The United States is divided into 4 time zones along the 75th, 90th, 105th and 120th meridians. The times in these time zones are called Eastern, Central, Mountain, and Pacific Standard Time. On the opposite side of the globe from Greenwich, there is another defining line: the international day line. This line runs approximately along the 180th meridian. When it's noon at Greenwich, it's midnight on the day change line. Crossing this line, a person gains an extra day or loses it, depending on where he is moving.

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Chronic lack of sleep can damage memory 19.06.2015

Scientists from the University of California at Berkeley (USA) found that lack of sleep leads to impaired conversion of short-term memory into long-term memory and contributes to the development of Alzheimer's disease.

The researchers conducted a series of experiments on 26 older people, instructing them to memorize certain words. After eight hours of sleep, the next morning, they were asked to repeat the words, using magnetic resonance imaging to record the activity of the hippocampus, which is responsible for short-term storage of memories, as well as the prefrontal cortex, responsible for long-term storage.

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In subjects who memorized words worse and slept less deeply, beta-amyloids in the cortex turned out to be significantly higher than normal. Thus, scientists concluded that there is a definite relationship between poor sleep and the accumulation of beta-amyloids.

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