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 ?
Platyhelminthes are the flatworms and have no body cavity other than the gastrointestinal tract, which lacks an anus.
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.
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.
The invertebrates: Platyhelminthes and Rhynchocoela.
protozoa, coelenterates, platyhelminthes, annelids, molluses, anthropods), plants, fungi, monera, and protista are excluded as a rule.
Human parasites are classified in five major subdivisions: 1) Protozoa (ameba, flagellates, ciliates, sporozoans, and coccidia); 2) Platyhelminthes or flatworms (cestodes and trematodes); 3) Acanthocephala or thorny-headed worms; 4) Nematoda or round worms; and 5) Arthropoda (insects, spiders, mites, and ticks).
Protein 4 hit priapulid sequences, Protein 5 hit Strongylocentrotus purpuratus sequences, Protein 8 hit octopus (molluscan) and platyhelminthes sequences, Protein 10 hit aphid and wasp sequences, and Protein 11 hit Aplysia californica sequences.
The Acoelomorpha, however, has been removed from the Platyhelminthes into its own phylum (Baguna and Riutort, 2004; Tyler et al.
Platyhelminthes, Trematoda, Digenea Carus, 1863: Distribution extension in Argentina and new Anura and Ophidia hosts.
Uniciliated, non-ciliated and various other types of presumed sensory receptors have been described on the body surface and haptor of monogeneans and other Platyhelminthes [19,23,33,34].
Punica granatum commonly known as (Anar) the roots and bark of the stem of this plant has been used as astringent (antidiarrheal) and anthelmintic plant and experimentally proved that the alcoholic extract of the stem bark of this plant inhibit the hatching of Haemonchus contortus eggs to filiform larvae, the aqueous, alcoholic and ether extract from seeds of the plant Cucurbita maxima has proved its vermifugal activity experimentally against Platyhelminthes (trematode and cestodes) and NEMA helminths (nematodes) both In Vitro as well as In Vivo trials.
Reise K: Experimental sediment disturbances on a tidal flat: Responses of free-living Platyhelminthes and small Polychaeta.