2012年7月25日星期三

Northern white rhino will science or nature ensure their survival

Northern white rhino will science or nature ensure their survival,Nike Lunar Max Kvinder White Blue sorte sko

Poachers decimated their numbers. Could scientists help rebuild a rhino population now numbering fewer than ten?

It is generally accepted that when a species comprises of fewer than ten individuals then it is time that the expensive last-ditch resort of cloning or creating new embryos could be used to avert the prospect of extinction.


Sadly, this is the case with the northern white rhino. In 2008,Hogan Nero Uomo Scarpe Oympia, the wild population consisted of just four individuals located in a national park in the Democratic Republic of Congo.

However, these rhino have seemingly disappeared off the face of the earth ?a fate that concerned conservationists are determined should not befall the seven living in captivity should avoid. Four of the seven can be found at the Ol Pejeta Conservancy in Kenya. Safari Consultants offer across Africa. Some of the best viewing of black & white rhino is found while on .

The rare rhino have settled in well in Kenya during the two years since they left two of their fellow rhino behind and moved from a zoo in the Czech Republic.

Sudan,Christian Louboutin chaussures New simples 120mm pompevente au rabais, a 35-year-old male who was caught from the wild,Nike Air Presto 2011 Sko Hvid, has socialised well with other rhino.

Suni,Christian Louboutin chaussures Mireille 70mmLivraison gratuite pour vous, the other male, who was born in captivity,Nike Zoom Kobe 5 Hvid Lilla Gul Sko, has adapted well to the wild.

Najin, the sister of Suni, also has her brother adaptability.

Fatu, the daughter of Najin,Nike Zoom Kobe VI Sko Blå Hvid Sort, has put on weight ?a sign of contentment rather than expectancy. However, the four have not moved from the Czech Republic merely for a change of scene ?they were uprooted as scientists believed that a return to their natural habitat could reawaken their sexual habitat and stimulate them to breed.

The plan has so far not come to fruition?

Conservationists understandably feel that they cannot afford to stand back and see if nature takes its course ?hence their investigation of alternative ways of ensuring that these four northern rhino aren the last to walk the earth.

A report in Nature Methods magazine has revealed how scientists have created stem cells from the endangered species with the aim of turning the cells into eggs and sperms and creating est-tube babies?

The initial results are surprisingly encouraging . The cells, taken from the skin of a rhino,Nike Zoom Kobe VI Concord Sko, have been regressed to an earlier stage of development; forming cells such as cartilage.

Research leader Dr Loring told BBC News: t wasn easy ?we had a lot of fiddling to make it work, but it did work.?

Dr Loring stressed that her research team are aiming to create new embryos with new genetic combinations rather than trying to clone the rhino (cloning has very low success rate?for endangered species).

While the scientists toil away in obscurity inside their laboratories,Nike Free 7.0 til kvinder, the four northern white rhino of the Ol Pejeta Conservancy have been attracting much attention from television crews alerted to just how unique these magnificent creatures are.

The rhino have been mating and their highly-sociable nature means that they are constantly flirting. The longer that they fail to reproduce,Nike Zoom Kobe VI Black Del Sol Sko, the longer that their flirt with extinction will continue.

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