Do zebras have stripes? Because of them, I fly my head

ernobl tinted famous african ungulates is a prime repellent. Tsetse flies also put insects discouraged from sitting on invites at all.

The question “What are zebra stripes for?” she always suffered not only from the birth of curious children, when they had to cut out the answer to their question during the visit of the African section of the local zoo. A bag and a number of biologists, such as Charles Darwin, also dealt with it.

To this day, he did not like the popular explanation according to which they represent masked stripes. The principle should be similar to your striped tiger, which allows it to disappear in the walls of the forest. On the vast African masses, such camouflage is much less important, Darwin realized. In addition, as confirmed by caution, the zebras will definitely not stumble in case of danger, but they will sound the announcement and immediately go to the tissue. Also, self-adhesive masking would not help them.

Darwin eventually fell in love with the npad, which gave the bar a special social function. They were to be used to distinguish individuals of the same species (even individuals within a species). According to Darwin, zebras are always willing to let go of donkeys if they are painted in a black-striped strip like a zebho male. Unfortunately for his hypothesis, the so-called zebroid testified about this ethn case, this identification means that it does not work so fully. Zebras will not reject donkeys or horses without the right appearance.

Cold or confusing?

The day of zoologists believe that the lanes have some social function and the invites are probably known according to them. It is a bag and a secondary function. Zebras would certainly be recognized differently. Biologists, for example, have thought that streaks help thermoregulate or give the impression that it looks tense, not in fact. There is no evidence for these claims.

Martin How from the Australian University in Queensland again believes that the stripes are used to confuse predators. In the magazine NewScientitst said, there are still unpublished data from which it follows that the stripes during the creation create an optical illusion, which impairs the visual orientation. Its influence is stronger, m vt is a group of white zebras.

The hypothesis of a confusing Inca zebch bar is also a favorite of many other biologists, but not Adam Egri of Budapest and his colleagues. And unlike Howa Adalch, they published in the Journal of Experimental Biology (here, but the work is paid) the results of an experiment that supports their thoughts.

Flies and stripes

Egri et al. they caught another idea, which dates back to the 1930s: the long stripes help the zebra against the annoying insects. In 1981, this myth was supported by a study that found that tsetse flies fit me on striped models, not on black or white.

Eskadrona model

Squadron model pouitch in an experiment in the field (near Budapest)

Maart leads the set of proofs. The tsetse flies were let go, and instead they took care of the other, annoying insect, which also occurs on African species. They went to the pasture near Budapeti, where they did a series of experiments with different black, white and different striped surfaces. They even built whole models called in black, blizzard degrees of striping.

The black color is the most attractive, the striped surface, which corresponds to the pattern, far from me, they found out. Experiments with different stripe thicknesses have shown that the strips are very close to an ideal insect repellent. The difference in the sweat of the insects perched (even more accurately caught) on the differently colored figures was marked. During the days when it flew the most, it was sometimes more than tenfold.

The reasons for the different liveliness of these colors for insects are evident in how light rubbed off from them. The human eye does not notice this, but the waves of reflected light often oscillate in all directions. This phenomenon is called polarization and a number of times it is different from ordinary light. For example, light is reflected from water and a very similar appearance of light is reflected from a black surface.

If you can perceive polarized light, it will be easier to look for water surfaces, even if there is not much in sight. Therefore, some insects, including insects, use this trick first. And if with his help he can find a suitable “koist”, tm lpe. And first the zebras do the armor.

You are going to know your development in the womb of ern. If they stayed like that, life would probably hurt them a lot more. They develop a flea band that they find in the later stages of embryonic development, but their length is markedly better. The stripes on the zebra evidently prevent the reflected light from polarizing in the way it always does (and as the old experiment shows, this also applies to tsetse flies). The scientists themselves say that it surprises them, because there are still a lot of blacks on the body, but the evidence is clear.

Of course, this does not automatically mean that other hypotheses about the wear of the strip are forgotten and refuted. But the presumption of their influence on insect repellency is the only one that has at least been experimentally proven, wrote the head of the Hungarian darkness, Gbor Horvath, in an e-mail to Technet. Australian neurobiologist Justin Marshall summed up the jet strunji for NewScientist: “Stripes of insects confuse the head.” It’s worth remembering, even if you’re not a hoofed animal.

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