Light strips applied to the dark skin of cows, helping the cows to avoid the bites of insects, found by Japanese scientists. According to experts, this once again proves that the same goal distinctive color helps to achieve the zebras.
The purpose of the stripes on the Zebra are interested biologists since ancient times — they were asked, including Charles Darwin. The founder of the theory of evolution suggested that the stripes serve to camouflage the animal. Later many other researchers adhered to the same opinion is shared by many researchers, but a number of recent studies have shown that such an assumption is hardly true.
For example, two years ago, and experts from the USA and Canada noticed that the eyes of predators that live near zebras and hunting them, are not arranged quite as in humans. As it turned out, the distance at which lions and spotted hyenas are able ratecity strips, in any case they could smell or hear prey, so this method of masking can hardly be considered effective. In the same study, the researchers questioned the assumption that the pattern helps the Zebra to get to know each other — as in the case of predator, the distance at which the stripes could play a role, Zebra cope with this task in other ways.
Last year the Hungarian experts have refuted the theory that the coloration of zebras allows them not to overheat in hot weather — in any case, the barrels that scientists have wrapped in the skins of various animals, is heated even more if the skin was striped, not gray or white.
Today, the theory that the stripes of zebras help to protect them from insects, is the most popular. At the beginning of 2019 experts have got new evidence in favor of this statement, having put on seven horses capes with white and black stripes. As it turned out in the body of a horse in a Cape and zebras, horseflies sat less than not covered with a cloth head or horses without capes.
In the new scientific work, experts have found that the effectiveness of strips of animal do not have to fully resemble a Zebra outlines. Causing dark skin Japanese cows light strips specialists have noticed that these animals insects bit less than half of those who have strips were missing or less contrast.
Experts expect that the obtained results not only allow a better understanding of why zebras was striped, but will also bring real benefits to agriculture.
The study was published in the journal PLoS ONE.