In Brazil, discovered a new species of river dolphin




In Brazil, discovered a new species of river dolphin

The first time since 1918, scientists discovered a new species of river dolphin, a rare toothed whales inhabiting the freshwater and very rarely seen in the ocean.

New species was discovered by researchers in the Brazilian river Araguaia. This rather large river flows in the Brazilian Highlands, and its length is about 2,600 kilometers. A new species of dolphins even decided to name in honor of the river – Araguaian boto.

River dolphins are so rare that many years are on the verge of extinction . Largely similar situation due to the fact that they are rapidly losing habitat, and people hunt them mercilessly. In addition, river dolphins have very poor eyesight, causing permanent bump on artificial objects, causing die.

Речной дельфин в естественной среде

Genetic studies have shown that river dolphins found about two million years ago strayed from the development of the other four species known to man today. This is the fifth appearance of these river dolphins, known to science. Previous open scientists view these dolphins Chinese river dolphin was found in freshwater lake Dongting in 1918 and completely extinct by 2006. The remaining three species of river dolphin still threatened with extinction, and conservationists are doing everything in their power to prevent this.

Journal PLOS ONE scientists published a report in which they suggest that the Araguaia River Basin currently has no more than 1,000 individuals a rare dolphin. According to them, this aquatic mammal must be marked as “particularly vulnerable” organization IUCN, engaged in nature conservation. A new species of dolphin differs genetically from the Bolivian and Amazon river dolphins, and this is proved by the fact that it is not the result of crossing. Also, a new type of dolphin stands out relatives increased brain size.

The fate of the rare mammal now depends on how active will build numerous hydroelectric and other buildings on the Araguaia River, because people do not sit around and constantly expanding their infrastructure in all directions. What it may be the case to some rare river dolphins there?
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Tags: Animals , Protection , Fish .


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