Is Climate Change trigger the cross breeding of animals?

In recent years a handful of 'hybrid' 
animals have been spotted in the Arctic,
such as this Polar bear Grizzly hybrid. 
 (Picture from: http://www.dailymail.co.uk/)

Erratic climate and temperature appears to trigger increased inter-species hybridization of animals. Scientists from the University of Alaska, United States, stated that lots of the animal as the results of hybridization found in the Arctic, as the most affected area by the global warming impacts.

Rapidly melting ice speed in the Arctic cause various types of animals, such as polar bears and brown bears, as well as various types of whales, previously separated by giant ice slab, now they can mingle freely, even can do cross breeding.

In 2006, a white bear with brown patches believed to be a hybrid of polar bears and grizzly bears. Unfortunately this mulatto bears killed by Arctic hunters. Scientists also have found a hybrid of white whales and bowhead whales in the Bering Sea four years ago.

In 2006 a white bear with brown patches thought to be a hybrid of a polar and grizzly bear (illustrations of cubs are pictured) was killed by Arctic hunters. (Picture from: http://www.dailymail.co.uk/)

"Cross breeding may seem like a smart survival tactic, but deadly," said the scientists team from the University of Alaska, on Tuesday, October 1, 2013. Pronounced as deadly, because the cross breeding produce the sterille descendants, and could result in the species extinction.

The Hooded (right) and Harp (left) species of seal both breed on pack ice of the North Atlantic Ocean and extend into the Arctic Ocean in summer months so they could easily meet and produce a hybrid pup. (Picture from: http://www.dailymail.co.uk/)

The scientists said a hybrid animal 
(illustrated) has already been 
confirmed by molecular analysis. 
 (Picture from: http://www.dailymail.co.uk/)

Occurrence of the cross breeding threat is no small matter. University of Alaska scientist team examined 34 species are at risk of experiencing cross breeding. Their findings were published at the Nature journal in 2010.

Elin Pierce, a Biologists says that one of these cross breedings also occur on Harp and Hooded seals species. Both live on an ice island in the North Atlantic Ocean and they could extending the reach of the Arctic Ocean in summer. "They can easily meet and breed there," she said. Another cross mating also occurs on the Harbour and Dall dolphins, which is lived off the coast of British Columbia, Canada.

The scientists say, the emergence of crossbred animals was ascertained through molecular analysis. The ice wide reduction in Arctic is believed to be the main factor driving up wildlife habitat overlap, causing them to do cross breeding. *** [EKA | FROM VARIOUS SOURCES | DAILYMAIL | MAHARDIKA SATRIA HADI | KORAN TEMPO 4361]

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