View source for Ascaridida



{{Taxobox
| name = Ascardidida
| regnum = [[Animal]]ia
| phylum = [[Roundworm|Nematoda]]
| classis = [[Secernentea]]
| subclassis = [[Spiruria]]
| ordo = '''Ascaridida'''
| ordo_authority =
| subdivision_ranks = Families
| subdivision = See text.
}}

The [[order (biology)|order]] '''Ascaridida''' includes several families of [[parasitic]] [[roundworms]] with three "lips" on the anterior end. They are sometimes placed in the [[subclass]] [[Rhabditia]], but more often in the [[Spiruria]].

Important [[family (biology)|families]] include:
*[[Ascarididae]], which includes the [[giant intestinal roundworm]] and related species.
*[[Toxocaridae]], which includes parasites of [[canids]], [[felid]]s, and [[raccoon]]s, but which can unsuccessfully parasitize humans and cause [[visceral larva migrans]].
*[[Anisakidae]], also called the [[marine mammal]] Ascarids.  The larvae of these worms cause [[anisakiasis]] when ingested by humans, but do not reproduce.

==References==
* {{ITIS | ID = 63836 | taxon = Ascaridida | year = 2007| date = July 28}}


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[[Category:Nematodes]]

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