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]
References in periodicals archive ?
Larval morphology, genetic divergence, and contrasting levels of host manipulation between forms of Pomphorhynchus laevis (Acanthocephala).
A number of Acanthocephala has been reported from the House Crow from Pakistan (Khan and Bilqees 1998 Khan et al.
Identificacion de la chinche de patas anchas (Acanthocephala femorata Fab.) en guanabano y su distribution en cuatro municipios del estado de Veracruz.
sucetta Intestine Valid macrorchis Christensen & Calentine, 1983 Proteocephalus Amphiuma Intestine Valid Alternans Riser, 1942 tridactylum Acanthocephala Neoechinorhynchus Ictiobus Intestine Valid strigosus Van, bubalus Cleave 1949
About 33 102 parasites (9603 arthropods and 23 499 helminths) were recovered from these hosts and grouped in the taxa Siphonaptera, Phthiraptera, Acari, Digenea, Cestoda, Nematoda, and Acanthocephala.
2 2 0.04 [+ or -] 0.28 CECOAL 04092904 Nematoda Oxyascaris caudacutus 1 2 0.02 [+ or -] 0.14 CECOAL 03120202 Cosmocerca parva 1 2 0.02 [+ or -] 0.14 CECOAL 04121316 Unknown rhabdochonid 10 6 0.20 [+ or -] 0.91 species CECOAL 04101102 Acanthocephala Centrorhynchus sp.
Experimental studies on lead accumulation in the eel-specific endoparasites Anguillicola crassus (Nematoda) and Paratenuisentis ambiguus (Acanthocephala) as compared with their host, Anguilla angulata.
of Class Acanthocephala, which is a spiny headed worm, infested also the intestine of the fish samples.