platyhelminth


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flatworm

 [flat´werm]
an individual organism of the phylum platyhelminthes; those parasitic in humans include tapeworms and flukes. Called also platyhelminth.

plat·y·hel·minth

(plat'i-hel'minth),
Common name for any flatworm of the phylum Platyhelminthes; any cestode (tapeworm) or trematode (fluke).
[platy- + G. helmins, worm]

platyhelminth

(plăt′ĭ-hĕl′mĭnth)
n.

plat′y·hel·min′thic adj.

plat·y·hel·minth

(plat'i-hel'minth)
Common name for any flatworm of the phylum Platyhelminthes; any cestode (tapeworm) or trematode (fluke).
[platy- + G. helmins, worm]

platyhelminth

A member of the phylum of flatworms that includes flukes, TAPEWORMS, and schistosomes. See LIVER FLUKE and SCHISTOSOMIASIS.

platyhelminth

or

flatworm

any invertebrate of the phylum Platyhelminthes, containing the TAPEWORMS (Cestoda), FLUKES (Trematoda) and planarians (Turbellaria). The Turbellaria are free-living flatworms which are aquatic and inhabit moist places on land. The two other groups are parasitic. They possess only an anterior opening to the gut system, there is no blood system and the animals show BILATERAL SYMMETRY. A mesoderm is present but there is no COELOM.
References in periodicals archive ?
Degenerating epidermal cells in Xenoturbella bocki (phylum uncertain), Nemertodermatida and Acoela (Platyhelminthes).
There is little experimental evidence to suggest the functions of the various types of receptors found in Platyhelminthes but all functional interpretations of presumed sensory structures remain uncertain and are based solely on their distribution and ultrastructural anatomy and are therefore speculative.
(Platyhelminthes: Rhabdocoela) on clams from the northern Patagonian coast, Argentina: pathogeny and specificity.
Planarians are free-living freshwater flatworms belonging to the phylum Platyhelminthes. They have a primitive morphology with simple triploblastic bodies (based on body-plan categories).
In an asexual race of Dugesia tigrina (platyhelminth), lost body regions are defined during regeneration by Hox genes that have sequences very similar to those found in annelids (Bayascas et al., 1998).
Larval and adult platyhelminths and Acanthocephala were fixed in alcohol-formalin-acetic acid (AFA), stained with acetic carmine, and mounted in Canada balsam.
Analyses of DNA sequences in the protein's codifying and non-codifying regions, have been largely used in phylogenetic studies on fish helminths parasites (Clark, 2006), with special reference to investigations on the three main Platyhelminthes groups: Cestoda, Digenea and Monogenea.
2001: Complete sequence of the mitochondrial genome of the tapeworm Hymenolepis diminuta: gene arrangements indicate that platyhelminths are eutrochozoans.