Why does a ZEBRA have stripes?
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Zebras[a] are African equines with distinctive black-and-white striped coats. There are three extant species: the Grévy's zebra (Equus grevyi), plains zebra (E. quagga) and the mountain zebra (E. zebra). Their stripes come in different patterns, unique to each individual. Several theories have been proposed for the function of these stripes, with most evidence supporting them as a form of protection from biting flies. Zebras share the genus Equus with horses and asses, and together they are the only living members of the family Equidae. Zebras belong to the subgenus Hippotigris. They inhabit eastern and southern Africa and can be found in a variety of habitats such as savannahs, grasslands, woodlands, shrublands and mountainous areas.


答案: 條紋能夠避免蟲子的叮咬。



1. 斑馬的黑白條紋可以用來躲避掠食者

2. 斑馬的黑白條紋具有社交意義

3. 斑馬的黑白條紋可以調節體溫,讓體感溫度變得涼爽

4. 斑馬的黑白條紋可以用來躲避虻(tabanids ,又稱馬蠅horse flies)攻擊

Why does a zebra have stripes?

There have been many theories to explain the zebra's unmistakable stripes.

Scientists have suggested that each zebra has a unique pattern that lets other animals recognize it.

Or that the mass of black and white in a vast herd provides confusing camouflage that puts off predators.

But this team set out to test exactly what effect the stripes had on a zebra's most irritating and ubiquitous enemy - the blood-sucking horsefly.

As part of their experiment the team put sticky horse models - one white, one black and one zebra-striped - into a fly-infested field. When they collected the flies that had landed and stuck to each of the models, they found that the model zebra attracted by far the fewest flies.

The researchers think that zebras had a black-coated ancestor, which evolved its white stripes in an evolutionary arms race, with an insect that's become the biting, disease-carrying scourge of most horse herds.

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