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Latest Population bottleneck Stories

Ancient Human Skulls Show Evidence Of Prevalent Inbreeding
2013-03-19 15:25:55

Brett Smith for redOrbit.com - Your Universe Online Although it is considered completely taboo in most modern societies, an ancient human skull found in northern China suggests inbreeding could have been prevalent among ancient peoples around 100,000 years ago, according to a report in the open access journal PLoS ONE. The skull — which was found at Xujiayao, a mountainous excavation site several hundred miles from the Mongolian border — contained an enlarged parietal...

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2011-02-28 14:48:17

Scientists report that the effective population of the critically endangered Amur tiger is less than 14 animals. About 500 Amur tigers have survived in the wild, but the effective population is a measure of the genetic diversity of the world's largest cat, according to BBC's Victoria Gill. Low diversity means they are more vulnerable to disease or rare genetic disorders. These results paint a grim picture for the tiger's chance of survival. The findings are reported in the journal...

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2009-08-04 13:20:00

New research has found that the European bison, Europe's heaviest surviving land animal, is still in danger of extinction, despite heroic conservation efforts.  Despite the number of wild bison in the herd having steadily risen to about 800, one of the last two wild herds of pure-bred European bison has dwindled down to an effective population of just 25. The effective population is a measure of the bison's genetic diversity, and can even serve to predict the animal's chances of...


Word of the Day
sough
  • A murmuring sound; a rushing or whistling sound, like that of the wind; a deep sigh.
  • A gentle breeze; a waft; a breath.
  • Any rumor that engages general attention.
  • A cant or whining mode of speaking, especially in preaching or praying; the chant or recitative characteristic of the old Presbyterians in Scotland.
  • To make a rushing, whistling, or sighing sound; emit a hollow murmur; murmur or sigh like the wind.
  • To breathe in or as in sleep.
  • To utter in a whining or monotonous tone.
According to the OED, from the 16th century, this word is 'almost exclusively Scots and northern dialect until adopted in general literary use in the 19th.'
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