Een nieuw onderzoek zwengelt de discussie opnieuw aan. Why do zebras have black and white stripes? They found that beyond 50 meters (about 164 feet) in daylight or 30 meters (about 98 feet) at twilight, when most predators hunt, stripes can be seen by humans but are hard for zebra predators to distinguish. Want to bookmark your favourite articles and stories to read or reference later? Tim Caro, co-author of the study and a UC Davis professor of wildlife biology, said: “The results from this new study provide no support at all for the idea that the zebra’s stripes provide some type of anti-predator camouflaging effect. Findings from their study will be published Friday, Jan. 22, in the journal PLOS ONE. All rights reserved. In earlier studies, Caro and other colleagues have provided evidence suggesting that the zebra’s stripes provide an evolutionary advantage by discouraging biting flies, which are natural pests of zebras. “We, instead, carried out a series of calculations through which we were able to estimate the distances at which lions and spotted hyenas, as well as zebras, can see zebra stripes under daylight, twilight, or during a moonless night.". For other inquiries, Contact Us. “The most longstanding hypothesis for zebra striping is crypsis, or camouflaging, but until now the question has always been framed through human eyes,” said the study’s lead author, Amanda Melin, an assistant professor of biological anthropology at the University of Calgary, Canada. De afgelopen jaren is de ene na de andere hypothese opgeworpen. De onderzoekers bestudeerden zebra’s die in Tanzania leefden. Zo stal ruimtesonde OSIRIS-REx wat materiaal van planetoïde Bennu, De pest greep in de 17e eeuw vier keer sneller om zich heen dan 300 jaar eerder, Vrijwel onbreekbare kever geeft zelfs geen krimp als er een auto overheen rijdt, Omstreden sterrenstelsel blijkt toch niet voor 99,99 procent uit donkere materie te bestaan, Wetenschap onthult hoe het coronavirus onze cellen kraakt, Corona kaart internationaal (John Hopkins). We simulated a biologically motivated motion detection algorithm to analyse motion signals generated by different areas on a zebra's body during displacements of their retinal images. A zebra's stripes are known to protect it from blood-sucking insects, as well as acting as camouflage. While zebras can see stripes over further distances than their predators can, scientists noted other species, closely related to the zebra, are highly social and able to recognise each other easily despite having no striping. "The Sun", "Sun", "Sun Online" are registered trademarks or trade names of News Group Newspapers Limited. Ze wijzen erop dat er in deze gebieden genoeg dieren leven die nauw verwant zijn aan de zebra, zeer sociaal zijn en ondanks dat ze geen strepen hebben, toch prima in staat zijn om elkaar te herkennen.
The functional significance of the zebra coat stripe pattern is one of the oldest questions in evolutionary biology, having troubled scientists ever since Charles Darwin and Alfred Russel Wallace first disagreed on the subject.
The stripes on zebras have been found to repel flies.
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