turbellarian


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Related to turbellarian: Cestoda, class Turbellaria, Monogenea

turbellarian:

see PlatyhelminthesPlatyhelminthes
, phylum containing about 20,000 species of soft-bodied, bilaterally symmetrical, invertebrate animals, commonly called flatworms. There are four classes: the free-living, primarily aquatic class, Turbellaria, and Trematoda, Cestoda, and Monogenea, which are
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; planarianplanarian,
common name for several genera of the free-living (turbellarian) flatworms belonging to the order Tricladida, a name that derives from their characteristic three-branched digestive cavities. Most species range from 1-8 in. to about 1 in. in length (.32–2.
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.
References in periodicals archive ?
solida was parasitized by prokaryotic inclusions in the digestive epithelium, intracellular inclusions of bacteria-like organisms and ciliates in the gills, gregarines similar to Nematopsis parasitizing exclusively the connective tissues of most organs, and a turbellarian similar to Paravortex in the intestine lumen.
All of his preliminary and final paintings of the nudibranchs and turbellarians exist in the files of the Division of Mollusks, U.
The predatory turbellarian studied here belongs to the monophyletic (Littlewood el at, 1999) suborder Kalyptorhynchia Graff, 1905 (Fig.
Common oyster predators in estuaries of the eastern United States include polyclad turbellarian flatworms, mud crabs (Panopeus herbstii, Eurypanopeus depressus), the blue crab (Callinectes sapidus), the stone crab (Menipes mercenaria), and fishes, including sheepshead (Archosargus probatocephalus) and toadfish (Opsanus tau) (White and Wilson 1996).
Helices are ubiquitous elements of both molecular and macroscopic structure, defining the forms of DNA, polypeptides, collagen, most gastropod shells, and the spicular skeletons of some sponges and turbellarian flatworms, as well as a wide range of patterns of plant architecture.
The parasitological analysis showed two species of copepods, Pseudomyicola spinosus and a calanoid species in the mantle cavity and gills; additionally, a turbellarian species was also observed in the mantle cavity, none of these symbionts were related to tissue damage.
One of the principal groups of benthic macroinvertebrates, the Oligochaeta (Annelida, Clitellata) plays a relevant role in the aquatic system food webs, acting as a source of food for turbellarian flatworms, chironomids, crabs, amphipod crustaceans, amphibians, fish and birds (Ezcurra de Drago et al.
Changes in the electrophoretic profiles of gill mucus proteases of the Eastern oyster Crassostrea virginica in response to infection by the turbellarian Urastoma cyprinae.
The same is also true of, among others, cave-dwelling tricladid turbellarian flatworms, isopod crustaceans of the group Sthenaselida and crangonid amphipods.