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    管家婆手机论坛

    平特论坛心水論壇: News

    New hope for world’s most endangered mammal

    管家婆手机论坛 www.7fop.net 7 November 2018

    Image of a northern white rhino

    New genetic analysis of white rhino populations suggests it could be possible to rescue the critically endangered northern white rhinoceros from extinction, using the genes of its less threatened southern cousin.

    Analysing genetic samples from 232 rhinos, researchers from Cardiff University and the University of Venda found that despite the northern and southern populations of white rhinos splitting from each other one million years ago they have occasionally shared genes during cold and arid periods, when African grasslands expanded, as recent as 14,000 years ago.

    Dr Isa-Rita Russo from Cardiff University, said: “By looking at the white rhino’s population history we’ve been able to establish that there was contact between northern and southern rhino populations throughout history.

    “This is an exciting find! Genetic proof of contact between the populations suggests it may be possible to successfully rescue the northern white rhinoceros using southern white rhinoceros genes to create embryos, although further data would need to be collected to confirm this.”

    White rhinoceros distribution across Africa is divided into populations in the north and south. The southern population declined to its lowest number around the turn of the nineteenth century, but recovered to become the world’s most numerous rhinoceros. In contrast, the northern population was common during much of the twentieth century, declining rapidly since the 1970s, leaving only two remaining post-reproductive rhinos.

    The team also found that population decline was very different in the north and south, with the northern white rhinoceros declining about 1,370 years ago, coincident with the Bantu migration, and the southern white rhinoceros declining during colonialism, starting 400 years ago.

    Professor Yoshan Moodley, University of Venda, said: “It appears that the white rhinoceros is no stranger to low genetic diversity, as our results show that the species was subjected to several climatically and anthropogenically driven population declines, which would have reduced and compressed genetic diversity in the past.

    “This is one of the few large animals to survive the last ice age, and it seems that the additional human pressure on an already genetically compromised species has pushed the white rhinoceros further along the road to extinction.”

    For more information visit the School webpages.
  • 天津市宁河区政府原党组成员、副区长李春海接受纪律审查和监察调查 2019-03-09
  • 合肥市长二小橡树湾校区师生携手外教端午文化体验行 2019-03-09
  • 锐参考 特朗普向金正恩作出这个承诺后,朝鲜的这两个邻居顿时“炸了”—— 2018-12-18
  • 【高清组图】新疆巴里坤草原千亩油菜花竞相绽放美不胜收 2018-12-18
  • 聚焦十九届中央纪委二次全会 2018-12-07
  • 徐峥《我不是药神》首度献声 唱响《生如夏花》 2018-12-05
  • 《新时代·新征程十九大精神在基层》各地聚焦--甘肃频道--人民网 2018-12-05
  • 民间艺术团原创歌曲唱响中国梦主旋律 2018-12-04