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World-first hybrid shark found off Australia | uk.news.yahoo.com

Scientists said on Tuesday that they had discovered the world's first hybrid sharks in Australian waters, a potential sign the predators were adapting to cope with climate change.

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 // quotation by oAnth:

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The Australian black-tip is slightly smaller than its common cousin and can only live in tropical waters, but its hybrid offspring have been found 2,000 kilometres down the coast, in cooler seas.

 

It means the Australian black-tip could be adapting to ensure its survival as sea temperatures change because of global warming.

 

"If it hybridises with the common species it can effectively shift its range further south into cooler waters, so the effect of this hybridising is a range expansion," Morgan said.

"It's enabled a species restricted to the tropics to move into temperate waters."

 

Climate change and human fishing are some of the potential triggers being investigated by the team, with further genetic mapping also planned to examine whether it was an ancient process just discovered or a more recent phenomenon.

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- original Url: http://uk.news.yahoo.com/world-first-hybrid-shark-found-off-australia-070347259.html



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