Acanthocephala


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Acanthocephala

 [ah-kan″tho-sef´ah-lah]
a phylum of elongate, mostly cylindrical organisms (thorny headed worms) parasitic in the intestines of all classes of vertebrates.

A·can·tho·ceph·a·la

(ă-kan'thō-sef'ă-lă),
The thorny-headed worms, a phylum (formerly considered a class) of obligatory parasites without an alimentary canal, characterized by an anterior introvertible spiny proboscis. They superficially resemble nematodes but are cestodelike in other traits, and hence are grouped as a distinctive phylum of helminths. In the adult stage they are parasites of vertebrate animals, mostly fish and amphibians; the larval stage is passed in invertebrates, chiefly crustaceans and insects.
[acantho- + G. kephalē, head]

Acanthocephala

/Acan·tho·ceph·a·la/ (ah-kan″tho-sef´ah-lah) a phylum of elongate, mostly cylindrical organisms (thorny-headed worms) parasitic in the intestines of all classes of vertebrates; in some classifications, considered to be a class of the phylum Nemathelminthes.

Acanthocephala

a phylum of elongate, mostly cylindrical organisms (thorny-headed worms) parasitic in the intestines of all classes of vertebrates.
References in periodicals archive ?
Some effects of two species of Acanthocephala on the alimentary canal of the largemouth bass.
Acanthocephala from fishes of Douglas Lake, Michigan.
They are eaten by fish and may be parasitized by roundworms and Acanthocephala.
BC 2 Metacercaria 1* M 36 Metacercaria 2* M 2 Acanthocephala Neoechinorhynchus sp.
The parasites were separated into four major groups: cestodes, nematodes, trematodes, and acanthocephala.
However, representatives from the trematoda, cestoda, and acanthocephala are also known to be encased in cysts in fish tissues (Hoffman 1999) so it is possible that one of these could have initiated the nodule formation.
Family Genus Species Alydidae Alvdus eurinus (say) Alydidae Ahatus pilosulus (Herrich- Schaeffer) Aradidae Mezira granulata (Say) Belostomatidae Lethocerus griseus (Say) Berytidae Jalysus wickhami Van Duzee Coreidae Acanthocephala femorata (F.
larvae) and one species of Acanthocephala represented by cystacanths (Oligacanthorhynchidae), were found.