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Latest Bdelloidea Stories

2012-11-16 14:08:02

Believed to 'ingest' DNA from other simple organisms Up to ten per cent of the active genes of an organism that has survived 80 million years without sex are foreign, a new study from the University of Cambridge and Imperial College London reveals. The asexual organism, the bdelloid rotifer, has acquired a tenth of its active genes from bacteria and other simple organisms like fungi and algae. The findings were reported today in the journal PLoS Genetics. Bdelloid rotifers are best...

2010-01-28 15:07:16

They haven't had sex in some 30 million years, but some very small invertebrates named bdelloid rotifers are still shocking biologists "“ they should have gone extinct long ago. Cornell researchers have discovered the secret to their evolutionary longevity: these rotifers are microscopic escape artists. When facing pathogens, they dry up and are promptly gone with the wind. "These animals have evolved a way to avoid parasites and pathogens by drying up and blowing away," said Paul...

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2008-05-29 17:54:06

MBL, WOODS HOLE, MA"”Where do you get your genes? If you are an animal, you inherit them from your parents at the moment of conception, and that's about it. No later incorporation of environmental DNA for you, unless you become host to a parasite or an endosymbiont that somehow transfers bits of its genome into yours (which is a rarely documented event). Unless you are a bdelloid rotifer, that is. This odd, microscopic, freshwater animal is making news once again, this time for the...

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2008-04-02 17:05:00

Birds and bees may do it, but the microscopic animals called bdelloid rotifers seem to get along just fine without sex, thank you. What's more, they have done so over millions of years of evolution, resulting in at least 370 species. These hardy creatures somehow escape the usual drawback of asexuality "“ extinction "“ and the Marine Biological Laboratory's (MBL) David Mark Welch, Matthew Meselson, and their colleagues are finding out how.In two related papers published this week...

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2008-03-25 15:40:00

Finding could stimulate new study of free radicals' role in inflammation, cancer, agingScientists at Harvard University have found that a common class of freshwater invertebrate animals called bdelloid rotifers are extraordinarily resistant to ionizing radiation, surviving and continuing to reproduce after doses of gamma radiation much greater than that tolerated by any other animal species studied to date.Because free radicals such as those generated by radiation have been implicated in...

2005-08-06 15:36:16

WOODS HOLE, MA - A January 2004 finding by biologists at the Josephine Bay Paul Center for Comparative Molecular Biology and Evolution added important evidence to the radical conclusion that a group of diminutive aquatic animals called bdelloid rotifers have evolved for tens of millions of years without sexual reproduction, in apparent violation of the rule that abandonment of sexual reproduction is a biological dead end. Now, MBL scientists are beginning to understand just what's different...


Word of the Day
blee
  • Color; hue; complexion.
This word is Middle English in origin.
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