Rotifers were first described when early microscopes became available, around 1700.

In the great majority of rotifers, however, this has evolved into a more complex structure.

Recent genome analysis has shown that they are closely related to rotifers.

This gave the rotifers their old name of "wheel animalules".

Rotifers have bilateral symmetry and a variety of different shapes.

The larvae require rotifers for at least four days after hatching.

Rotifers have for long been know to survive repeated freeze-thaw cycles.

About 2200 species of rotifers have been described.

Recent genome analysis has shown that they are descended from, and should be considered as, highly modified rotifers.

Rotifers are specialists at living in habitats where water dries up regularly.

Rotifers typically possess one or two pairs of short antennae and up to five eyes.

It is mainly used as an energy-rich food source for fish larvae and rotifers.

One whole phylum of creatures, the rotifers, seem to fit into no known evolutionary tree at all.

Many rotifers can retract the foot partially or wholly into the trunk.

The name "Platyzoa" is used because most members are flat, though rotifers are not.

In one of the classes, the freshwater Bdelloid rotifers, no males have ever been seen.

These include the Bdelloid rotifers, which only reproduce by parthenogenesis.

The irruption of the rotifers decided the girl.

The group is regarded as an ancestral or synthetic one, related to rotifers and annelids.

However, it can be seen that the black water held greater numbers of rotifers but fewer crustaceans and mites.

Peculiar among rotifers, males and females are both present and equal in size.

It is related to the rotifers and gnathostomulids, grouped together as the Gnathifera.

The mouth of this predator has a wide opening, so the animal can eat rotifers and larger protists.

Rotifers have a small brain, located just above the mastax, from which a number of nerves extend throughout the body.

The Rotifera or rotifers, are common in aqueous environments.

The Rotifera or rotifers, are common in aqueous environments.

They are placed in the phylum Rotifera.

The Rotifera, strictly speaking, are confined to the Bdelloidea and the Monogonata.

Morphology suggests that they are close to the Gnathostomulida, the Rotifera, or the Nematoda.

Possibly there were quintillions of animalcules, rotifera, bacteria, and amoebae in the steaming pool in which Alyx began.

Small filter feeding invertebrates such as Daphnia and species of Rotifera greatly assist in treatment by removing fine particulates.

The rotifers (Rotifera, commonly called wheel animals) make up a phylum of microscopic and near-microscopic pseudocoelomate animals.

One treatment places them in the phylum Rotifera, with three classes: Seisonidea, Bdelloidea and Monogononta.

Problepsis craspediata rotifera (New Guinea)

Phylum Rotifera : Philodina spp.

Claria (Rotifera) and Clarias (Actinopterygii) give both Clariidae, but only the actinopterygian fish name was used since 1845.

You understand such a thing as, don't you, as cryptobiosis extends the lifespan of lower orders such as Rotifera and Nematoda?

De Blainville included in his group many unicellular forms, sea anemones, corals, jellyfish, hydroid polyps, echinoderms, polyzoa, and rotifera.

The Schmutzdecke is formed in the first 10-20 days of operation and consists of bacteria, fungi, protozoa, rotifera and a range of aquatic insect larvae.

Gosse opened a "Classical and Commercial School for Young Gentlemen" while keeping detailed records of his microscopic investigations of pond life, especially cyclopidae and rotifera.

The composition of any particular schmutzdecke varies, but will typically consist of a gelatinous biofilm matrix of bacteria, fungi, protozoa, rotifera and a range of aquatic insect larvae.

The John J. & Anna H. Gallagher Fellowship provides a unique opportunity for original, multi-year, postdoctoral or sabbatical research on the systematics of microscopic invertebrates, especially Rotifera.

In small aquatic creatures such as Rotifera, the poikilothermy is practically absolute, but other creatures have wider physiological options at their disposal, and they can avoid ambient temperature changes, or moderate their effects.

Cenotes, sinkholes on the Yucatan peninsula that are filled with groundwater, host a number of unique species from bacteria, algae and protozoa (i.e. copepoda, cladocera and rotifera) to vertebrates (i.e.lepisosteus).

Shortly after Clariidae had been proposed in Rotifera in 1990, the homonymy was discovered and the Commission had to decide that the Rotiferan family had to be amended to Clariaidae (Opinion 2032).

The animals thus associated, the Rotifera, Annelida and Arthropoda, are composed of a larger or smaller number of hollow rings, each ring possessing typically a pair of hollow lateral appendages, moved by intrinsic muscles and penetrated by blood-spaces.

The coverage of animal taxa includes representatives of Protozoa, Porifera, Cnidaria, Plathelminthes, Nematoda, Rotifera, Onychophora, Arthropoda (including Crustacea, Chelicerata, Trilobita, Myriapoda, Insecta), Annelida, Bryozoa, Mollusca, Sipunculida, Echinodermata, and Hemichordata.

His penultimate enthusiasm was with the genitalia of butterflies about which he published a paper in the Transactions of the Linnean Society But before his death he returned to rotifera, much of his research appearing in a two-volume study with another zoologist, C.T. Hudson.