Bdelloidea

(redirected from Bdelloid rotifer)
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Bdelloidea

A class of rotifers (wheel animals) found in fresh water and moist soil, which are of interest to scientists because sexual reproduction has disappeared: males do not exist and females reproduce exclusively by parthenogenesis.
References in periodicals archive ?
GIRL POWER: The bdelloid rotifers lay eggs which turn into clones of the mother
Key to the identification of the genera of bdelloid rotifers.
Biologists have mused that there might be something funny about the sexual history of bdelloid rotifers, one of the classes of a phylum of little stalk-like water animals crowned with a characteristic circle of hairlike cilia.
The ovaries in bdelloid rotifers, however, create eggs containing the full genome.
But according to a report in National Geographic News, the bdelloid rotifers, microscopic asexual freshwater invertebrates, have survived by abstaining from sex for the last 30 to 50 million years.
So while most animals are locked in evolutionary arms races with their foes, bdelloid rotifers escape them altogether simply by being carried on the wind.
Washington, January 29 (ANI): A new research has discovered that the secret to the evolutionary longevity of very small invertebrates called bdelloid rotifers is that they are microscopic escape artists that dry up and are promptly gone with the wind when faced with pathogens.
Bdelloid rotifers are tiny, freshwater invertebrates that have long puzzled scientists because, as completely asexual animals, they should have been extinguished by parasites and pathogens long ago in evolutionary time.
Microscopic bdelloid rotifers have seemingly evolved without sex for millions of years and probably don't exist in male form, say Harvard University biologists.