
	Where results make sense

Topic: Rotifer

Related Topics

Rotifera

Metazoan

Seison

Monogonont

Animal

Gnathostomulida

Loricifera

Animalia

Bdelloid

Nematoda

Gnathifera

Mollusca

Priapulida

Annelida

Pseudocoelom

In the News (Wed 25 Nov 09)

Northern Trust

Marvin Harrison

Peter Chernin

Gary Locke

Match Play

Penelope Cruz

Mickey Rourke

AR Rahman

Danny Boyle

Hugh Jackman

	Fresh Water Rotifers: A general introduction with photomicrographs of bdelloid rotifers. (Site not responding. Last check: 2007-09-10)
		Rotifers are small, mostly freshwater animals, and are amongst the smallest members of the Metazoa -- that group of multicellular animals which includes humans, and whose bodies are organized into systems of organs.
		Most rotifers are about 0.5mm in length or less, and their bodies have a total of around a thousand cells.
		When the rotifer is attatched, the current created by the corona brings food particles to the mouth, and when the rotifer releases the grip of its foot, they act as twin propellers, transporting the rotifer rapidly from one place to another.
	www.micrographia.com /specbiol/rotife/homebdel/bdel0100.htm (893 words)

	References - Production and Application of Rotifers in Aquaculture Page 2
		The second indicator for assessing the status of rotifer mass cultures is egg ratio, which is the number of eggs carried by females divided by the number of females.
		Rotifer bisexual reproduction is affected by both internal and external factors (Hagiwara et al., 1991).
		The ability of rotifers to undergo mictic multiplication and to generate the resting eggs is thought to develop in an evolutionary process to cope with severe environmental changes (Fukusho, 1989).
	www.netpets.com /fish/reference/reefref/rotifers2.html (1224 words)

	rotifer information
		Rotifers are found in aquatic and semi-aquatic habitats, but are predominantly freshwater inhabitants.
		Rotifers are very important in these systems because of their incredible reproductive rates.
		Rotifers may also be very abundant in the interstitial water of soils reaching densities up to 2 million per square meter.
	dmc.utep.edu /rotifer/info.html (359 words)

	rotifer (Site not responding. Last check: 2007-09-10)
		Rotifers are a group of microscopic animals that live just about anywhere there is fresh water, including lakes, ponds, streams, puddles, ditches, wet shorelines (especially sand), and even on wet mosses.
		Common foods of rotifers include: algae, protozoa (such as amoeba and paramecium), small crustaceans (such as water fleas and copepods), and small bits of plant or animal matter floating in the current.
		Rotifers are an important part of any healthy body of fresh water, so by studying them, scientists can learn about the water they live in.
	www.fcps.k12.va.us /StratfordLandingES/Ecology/mpages/rotifer.htm (425 words)

	Introduction to the Rotifera
		Rotifers are microscopic aquatic animals of the phylum Rotifera.
		Rotifers are also commonly found on mosses and lichens growing on tree trunks and rocks, in rain gutters and puddles, in soil or leaf litter, on mushrooms growing near dead trees, in tanks of sewage treatment plants, and even on freshwater crustaceans and aquatic insect larvae.
		The final region of the rotifer body is the foot; this foot ends in a "toe" containing a cement gland with which the rotifer may attach itself to objects in the water and sift food at its leisure.
	www.ucmp.berkeley.edu /phyla/rotifera/rotifera.html (1701 words)

	James N. McNair - Projects - Rotifer chemostat dynamics
		The rotifer chemostat is an excellent experimental tool for conducting detailed laboratory studies of population dynamics.
		Previous workers who wished to model the rotifer chemostat simply employed traditional models (or minor variants) that were originally developed for the microbial chemostat.
		My own approach to improving the theory of the rotifer chemostat is to build new types of models that include basic aspects of population structure and that link these aspects to physiological mechanisms underlying growth and reproduction.
	www.acnatsci.org /~mcnair/proj_rotifer.html (781 words)

	Nikon MicroscopyU: DXM 1200 Digital Eclipse Image Gallery - Philodina Rotifer
		Rotifers are extremely common and can be found in many freshwater environments and in moist soil, where they inhabit the thin films of water surrounding soil particles.
		They are also commonly found on mosses and lichens, in rain gutters and puddles, in soil or leaf litter, on mushrooms growing near dead trees, in tanks of sewage treatment plants, and even on freshwater crustaceans and aquatic insect larvae.
		The trophi are the only part of a rotifer that can be fossilized and have been found in amber dating back to the Eocene epoch (38-55 million years ago).
	www.microscopyu.com /galleries/dxm1200/philodinarotifersmall.html (347 words)

	Culturing Rotifers
		Commercial availability of rotifer resting eggs could be the solution by eliminating the need to maintain stock cultures and reduce the chances for contaminations with ciliates and pathogenic bacteria.
		In later years, wild rotifers are not needed, because there are a great number of rotifer cysts on the bottom of the rotifer ponds.
		The rotifer resting eggs are located on the bottom of the rotifer ponds, where DO is very low or zero and light is not sufficient.
	ukdiscus.com /culrotifers.htm (2500 words)

	Breeder's Net
		Rotifer means “wheeled animals” and when viewed under a microscope these organisms appear to have wheels rotating about the tops of their heads.
		Rotifers are characterized by the presence of a ciliated organ on the head (called corona) that capture food, and a specialized pharynx (called mastax) with hard jaws (called trophi).
		Rotifer cysts can survive adverse conditions and remain dormant for years if required, and it’s these cysts (resting rotifers or rotifer cysts) that allow rotifers to be reestablished at a later time when conditions are favorable again.
	www.advancedaquarist.com /issues/sept2002/breeder.htm (4689 words)

	FRESH AND SALT WATER ROTIFER REARING - Sachs Systems Aquaculture
		Salt water rotifers (Brachionus plicatilis) are small, microscopic animals used to feed salt and fresh water fish larvae, plankton feeders, and invertebrate larvae.
		If the rotifer population does not appear to be "thinning" out inside the larvae tank by the second feeding, then feed less rotifers (and if the opposite happens, then feed more.) The object is to get a nice density of rotifers which allows the larvae to snack all day long but not compromise water quality.
		Rotifers are hardy little buggers, and can take very old culture water as long as the water quality is not ruined by over feeding.
	www.aquaculturestore.com /info/rotifer.html (1284 words)

	Observations on the free-swimming, tube-dwelling rotifer, Cephalodella forficula
		After a rotifer hatched, it would generally spend up to two days in the brood tube before leaving it, but rotifers were observed remaining in the brood tubes for up to four days and longer, and at times 3 adults were seen in one tube.
		On two occasions, the mother rotifer was seen to leave the brood tube, build a new tube and lay another egg, while the young rotifer remained in the original brood tube and laid an egg in it.
		Ecology and behaviour of a free-swimming, tube-dwelling rotifer, Cephalodella forficula.
	homepage.ntlworld.com /f.longrigg/cephalodella_forficula.html (1284 words)

	Rotifer - Wikipedia, the free encyclopedia
		Rotifers may be free swimming and truly planktonic, others move by inchworming along the substrate whilst some are sessile, living inside tubes or gelatinous holdfasts.
		Rotifers get their name (derived from Latin and meaning "wheel-bearer"; they have also been called wheel animalcules) from the corona, which is composed of several ciliated tufts around the mouth that in motion resemble a wheel.
		Rotifers belonging to the Class Seisonoidea reproduce sexually, those in the Class Bdelloidea reproduces asexually, and most rotifers in the Class Monogononta alternate sexual with a series of asexual generations.
	en.wikipedia.org /wiki/Rotifer (532 words)

	Phylum Rotifer (cont (Site not responding. Last check: 2007-09-10)
		Young rotifers emerge from amictic eggs soon after the eggs are released; thus, amictic eggs are also known as subitaneous eggs (subit = sudden).
		The rotifer brain consists of a bilobed mass of ganglia lying dorsal to the mastax.
		The freshwater, suspension-feeding rotifer Brachionus calyciflorus, exhibits such a response to some chemicals released by a predaceous rotifer-relative,in the genus Asplanchna.
	bama.ua.edu /~clydeard/bsc376/lecture17.htm (954 words)

	Saline Systems \| Full text \| International Rotifer Symposia: prospects and retrospects from Rotifera XI
		The fact that new species are currently discovered from different parts of the world suggests that the taxonomic studies on rotifers are far from complete in spite of its 300 year old history [2,3].
		The proceedings of the XI Rotifer meeting are also expected to appear in the same journal (Table 1).
		The importance of morphological and molecular data on the rotifer phylogeny was considered during this symposium.
	www.salinesystems.org /content/2/1/6 (1555 words)

	North Cascades National Park: Ecological Effects of Stocked Trout
		Most rotifer taxa are believed to have powerful passive dispersal strategies (Dumont 1983; Pennak 1978) though knowledge of the extent of biogeographic distribution for particular species is modified as understanding of a confusing taxonomy (created by the great degree of parthenogenesis and extensive morphological plasticity in some species) changes (Dumont 1983; Sudzuki 1964; Ruttner-Kolisko 1993).
		The objectives of this study were to determine the distribution and relative density of rotifers in mountain lakes in North Cascades National Park Service Complex, and to relate their distribution and density to physico-chemical conditions, the presence of crustacean zooplankton, and the presence of vertebrate predators.
		These microfiltrating rotifer taxa are also relatively small-bodied (100-200 um excluding posterior spines; Stemberger 1979), and tend to have low threshold food levels (Stemberger and Gilbert 1987a), a factor that would work to their advantage in relatively unproductive lakes.
	www.nps.gov /noca/Trout/trout1f.htm (4579 words)

	Info on Live Rotifers (Site not responding. Last check: 2007-09-10)
		Rotifer cultures have a habit of crashing (Dying) so more than one is a good idea.
		When you use the Rotifers for food you would sieve off all but about 250 ml and then sieve off the remaining 250 ml of culture and wash it into another clean culture container with 1 litre of culture water in the same way as you did to start your first culture.
		The rotifer density can be controlled by feeding once a day to just tick over or twice a day or more for higher densities.
	www.aquaculturesupplies.co.uk /rotiferinfo.html (1723 words)

	MICROSCOPY UK / MICSCAPE - Article : Microscopy. Rotifer - predated by protozoa
		Rotifers are multicellular microscopic organisms which are typically 0.1 to 1mm long and are found in a variety of aquatic habitats.
		The female rotifer in its death throes releases an amictic egg, which was probably due to be laid regardless of whether she had been trapped by the fungus.
		The original paper entitled 'A Note on the Consumption of a Rotifer egg by Ciliated Protozoa (Ciliophora)' by K R Jones and E D Hollowday was published in Microscopy, vol 36, p718-720, 1992.
	www.microscopy-uk.org.uk /mag/articles/rotifer.html (1309 words)

	Highbeam Encyclopedia - Search Results for rotifer (Site not responding. Last check: 2007-09-10)
		Each rotifer has a head bearing a crown of cilia, the corona, at the anterior end; most rotifers feed with the aid of currents generated by the coronal cilia.
		Effect of varied amounts of sunlight on population levels of the marine rotifer B. pilicatus.
		Effect of temperature on the response of planktonic rotifers to a toxic cyanobacterium.
	www.encyclopedia.com /articles/11162.html (329 words)

	Korea-Us Aquaculture
		Because of high rotifer population density depletes dissolved oxygen caused mass mortality of cultured eels by denaturation of culture water.
		The semi-continuous culture method, a certain volume of rotifer is daily harvested from the culture tank, which is replaced with food suspension medium.
		Population growth of axenic cultured rotifer is maintained with a high density and stable growth compared with the general culture style of non-axenic culture.
	www.lib.noaa.gov /korea/korean_aquaculture/zooplanktonic.htm (722 words)

	Rotifer - Howard Taylor - Rotifer Specialist (Site not responding. Last check: 2007-09-10)
		The Moina (Moina macrocaopa) / Rotifer (Brachionus calyciflorus) cultures are in the 20 gallon "Muck Buckets" in the foreground.
		Brachionus calyciflorus (a rotifer) (eukaryotes) · ANIMALIA (animals) ·; ROTATORIA (rotifers) · Brachionus calyciflorus (a rotifer).
		Rotifers are common micro animals on glaciers in the world.
	lineseek.com /?q=rotifer (158 words)

	Rotifers
		Because they are so small most people have never heard of their existence.
		Rotifers are so transparent that all these organs can be observed easily.
		The rotifers from the genus Collotheca live attached to a substrate and collect tiny microbes like bacteria with extremely elongated cilia.
	www.microscopy-uk.org.uk /mag/wimsmall/rotidr.html (316 words)

	Nikon MicroscopyU: DXM 1200 Digital Eclipse Image Gallery - Collotheca Rotifer
		These rotifers are sessile; they are either attached to each other forming a spherical colony, or attached individually to the substrate.
		Each rotifer secretes a gelatinous tube into which it withdraws when disturbed.
		Although they are flexible enough to be folded up and pulled inside when the rotifer retreats into its tube, for feeding they are extended and appear to become rigid.
	www.microscopyu.com /galleries/dxm1200/collothecasmall.html (375 words)

	Reed Mariculture - Rotifer Production Systems
		Rotifer Diet HD is a combination of the microalgae species Nannochloropsis and Tetraselmis and results in a 20% increase in rotifer volume over pure Nannochloropsis.
		At Reed Mariculture's facility we maintain a continuous culture of 1 billion rotifers that are fed using Rotifer Diet.
		Using this feed the rotifers produce so many eggs that the density is easily maintained at this high harvest rate.
	www.rotiferdiet.com (158 words)

	Amazon.com: rotifer (Site not responding. Last check: 2007-09-10)
		Biology of Rotifers (Developments in Hydrobiology) by B. Pejler, R. Starkweather, and Th.
		Effect of different densities of live and dead Chlorella vulgaris on the population growth of rotifers Brachionus calyciflorus and Brachionus patulus (Rotifera).:...
		Rotifers as monitors of heavy metal pollution in water (VPI-WRRC-BULL ; 71) by Arthur L Buikema (Unknown Binding - 1974)
	www.amazon.com /s?ie=UTF8&keywords=rotifer&tag=icongroupinterna&index=blended&link_code=qs&page=1 (402 words)

	Rotifers Rotifer Culture
		The rotifer B. plicatilis is an euryhaline species, but the optimal salinity for rotifer growth is 10-20 ppt.
		Practical application of rotifers in larviculture of Chinese white shrimp P.
		Ecology of the rotifer B. plicatilis in natural brackish waters.
	www.athiel.com /lib5/rotifers.htm (3139 words)

	rotifer (Site not responding. Last check: 2007-09-10)
		Even though there are many different species of Rotifer they are quite easily and almost immediatley recognized by the apparent rotation of what looks a wheel around their mouths.
		This feeding is easily observed under the microscope because the rotifer is for the most part transparent.
		One of the neat things about Rotifers is that most of them are so active.
	members.tripod.com /~labnut/rotifer.html (208 words)

	Rotifer.htm (Site not responding. Last check: 2007-09-10)
		Rotifers are small, pseudocoelomate metazoans, the size of ciliates.
		In the specimen at the right, the corona has been modified into a food trapping organ.
		For rotifer micromovies, go here, here and here.
	bill.srnr.arizona.edu /classes/182/Rotifer.htm (77 words)

	What is Rotifer (Site not responding. Last check: 2007-09-10)
		The two wheels on rotifers are made of cilia that beat and create a current that draws water containing food into the gut of the rotifer.
		These live mainly in freshwater, in bogs, lakes, and rivers, although some inhabit seas and damp soil.
		Rotifers eat bacteria, protists, and other small animals.
	www.utep.edu /museum/chih19/intro/life/rotiferx.htm (51 words)

Try your search on: Qwika (all wikis)