Platyhelminthes


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Platyhelminthes

 [plat″ĭ-hel-min´thēz]
the flatworms, a phylum of acoelomate, dorsoventrally flattened, bilaterally symmetrical animals; it includes the classes cestoidea (tapeworms) and trematoda (flukes).

Plat·y·hel·min·thes

(plat'i-hel-min'thēz),
A phylum of flatworms that are bilaterally symmetric, flattened, and acelomate. There is no digestive tract in some platyhelminths (Cestoda), or the gut may be incomplete (without an anus), as in the Trematoda; most of the forms are hermaphroditic. There are three major classes, but the parasitic species of medical and veterinary importance are in the subclass Cestoda (the true tapeworms) of the class Cestoidea, and in the subclass Digenea (the digenetic flukes) of the class Trematoda.

Platyhelminthes

/Platy·hel·min·thes/ (-hel-min´thēz) a phylum of acoelomate, dorsoventrally flattened, bilaterally symmetrical animals, commonly known as flatworms; it includes the classes Cestoidea (tapeworms) and Trematoda (flukes).

Platyhelminthes

[plat′ihelmin′thēz]
Etymology: Gk, platys, broad, helmins, worm
a phylum of flatworms that includes parasitic tapeworms (class Cestoda) and flukes (classes Monogenea and Trematoda) as well as mostly free-living species, such as planarians (class Turbellaria).

Plat·y·hel·min·thes

(plat'i-hel-min'thēz)
A phylum of flatworms that are bilaterally symmetric, flattened, and acelomate. Parasitic species of medical importance are in the subclass Cestoda (the true tapeworms) of the class Cestoidea, and in the subclass Digenea (the digenetic flukes) of the class Trematoda.

Plat·y·hel·min·thes

(plat'i-hel-min'thēz)
A phylum of flatworms that are bilaterally symmetric, flattened, and acelomate.
References in periodicals archive ?
Results indicated that response by the Platyhelminthes was diminished by 30% when samples were wrapped in 1 mm lead wrap and totally eliminated by a 4 mm lead wrap.
ANIMALIA 1,320,000 MESOZOA METAZOA 1,320,000 Porifera (sponges) 10,000 Cnidaria (hydras, jellyfish, corals, etc) 10,000 Platyhelminthes (flatworms) 20,000 Nematoda (roundworms) 25,000 Echinodermata (sea uchins, etc.
These included platyhelminthes, brachiopods, two cyclopoid copepods, nematodes, and a single ephyra of Aurelia spp.
Lagoons USX Reach Taxa NPS1 NPS2 FWS1 Phylum Porifera Phylum Cnidaria Hydridae Hydra Phylum Platyhelminthes Turbellaria Phylum Nematoda Phylum Bryozoa Plumatella unidentified bryozoans Phylum Annelida Oligochaeta Lumbricidae Lumbriculidae Tubificidae Limnodrilus Limnodrilus cervix Limnodrilus hoffmeisteri Potamothrix vejdovskyi Quistadrilus multisetosus immature w/o capil.