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rotifer

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rotifer

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Rotifer (Platyias quadricornis)
(credit: Runk/Schoenberger from Grant Heilman)
Any of about 2,000 species of microscopic, multicellular, water-dwelling invertebrates constituting the class Rotifera, or Rotaria (phylum Aschelminthes; see worm). Currents created by the rotifer's corona (moving cilia arranged in a circle at the head) sweep bacteria, protozoans, and detritus into the mouth. Rotifers also eat larger items (other rotifers, crustaceans, algae). The muscular pharynx contains hard jaws. Body shape varies greatly among species. Rotifers are common in freshwater on all continents, but some live in saltwater. The species vary widely in mode of living: they may be free-living or parasitic, solitary or colonial, and free-swimming, crawling, or sedentary.



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? Mentioned in ? References in periodicals archive
 
From posthatch day 0 to day 6, larvae were fed a suspension of rotifers (3,000 rotifers/mL; 2 mL three times per day on Monday-Friday and twice per day on weekends).
Effects of ammonium perchlorate on thyroid function in developing ... by Brown, J. Anne / Environmental Health Perspectives
Hsp60-induced tolerance in the rotifer Brachionus plicatilis is exposed to multiple environmental contaminants.
Chlamydophila abortus pelvic inflammatory disease by Wurzner, Reinhard / Emerging Infectious Diseases
They reported in 2000 that the two copies of the gene in the asexual species differ from each far more than do copies of genes in rotifers that evolved with sexual reproduction (SN: 5/20/00, p.
Life without sex: so, how many millions of years has it been? by Milius, Susan / Science News
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