Overview
The order Ascaridida includes several families of parasitic roundworms with three "lips" on the anterior end. They were formerly placed in the subclass Rhabditia by some, but morphological and DNA sequence data rather unequivocally assigns them to the Spiruria. The Oxyurida and are occasionally placed in the Ascaridida as superfamily Oxyuroidea, but while they seem indeed to be Spiruria, they are not as close to Ascaris as such a treatment would place them.1]
In an alternate taxonomic treatment, the Ascaridida are ranked as an infraorder Ascaridomorpha.
The suborder Dioctophymatina is doubtfully valid; it contains a mere 2 families, one of which is monotypic. Most Ascaridida are placed in the suborder Ascaridina. These "worms" contain a number of important parasites of humans and domestic animals.
Important families include:
- Anisakidae, also called the "marine mammal ascarids". The larvae of these worms cause anisakiasis when ingested by humans, but do not reproduce.
- Ascarididae, which includes the giant intestinal roundworms (Ascaris spp.).
- Cosmocercoides, which includes taxa that parasitize certain amphibians
- Toxocaridae, which includes parasites of canids, felids, and raccoons, but which can unsuccessfully parasitize humans and cause visceral larva migrans.
These all belong in the superfamily Ascaridoidea.
Footnotes
- ^ ToL (2002)
In an alternate taxonomic treatment, the Ascaridida are ranked as an infraorder Ascaridomorpha.
The suborder Dioctophymatina is doubtfully valid; it contains a mere 2 families, one of which is monotypic. Most Ascaridida are placed in the suborder Ascaridina. These "worms" contain a number of important parasites of humans and domestic animals.
Important families include:
- Anisakidae, also called the "marine mammal ascarids". The larvae of these worms cause anisakiasis when ingested by humans, but do not reproduce.
- Ascarididae, which includes the giant intestinal roundworms (Ascaris spp.).
- Cosmocercoides, which includes taxa that parasitize certain amphibians
- Toxocaridae, which includes parasites of canids, felids, and raccoons, but which can unsuccessfully parasitize humans and cause visceral larva migrans.
These all belong in the superfamily Ascaridoidea.
Footnotes
- ^ ToL (2002)
References
- Tree of Life Web Project (ToL) (2002): Nematoda. Version of 2002-JAN-01. Retrieved 2008-NOV-02.
Taxonomy
The Order Ascaridida is further organized into finer groupings including:
- Suborder (2): Ascaridina · Dioctophymatina
- Infraorder (1): Muscomorpha
- Family (23): Acanthocheilidae · Anisakidae · Ascarididae · Ascaridiidae · Atractidae · Cosmocercidae · Crossophoridae · Cucullanidae · Dioctophymatidae · Goeziidae · Heterakidae · Heterocheilidae · Kathlaniidae · Maupasinidae · Oxyuridae · Quimperiidae · Rhigonematidae · Schneidernematidae · Seuratidae · Soboli phymatidae · Subuluridae · Thelastomatidae · Toxocaridae
- Species: ZipcodeZoo has pages for 408 species and subspecies in the Order Ascaridida.
Families
Acanthocheilidae
Anisakidae
Anisakidae is a family of intestinal roundworms. They are also called the marine ascarids. The larvae of these worms can cause anisakiasis when ingested by humans, but do not reproduce except in marine mammals or seabirds.[] [more]
Ascarididae
Ascaridiidae
Ascaridiidae is the name of a family of parasitic nematodes. The family includes roundworms belonging to a single genus Ascaridia. Members are essentially intestinal parasites of gallinaceous birds, including domestic fowl. A. galli is the most prevalent and pathogenic species, especially in domestic fowl. They cause the disease ascaridiasis in birds. [more]
Atractidae
Cosmocercidae
Cosmocercidae is a nematode family in the super family Cosmoceroidea. [more]
Crossophoridae
Cucullanidae
Dioctophymatidae
Goeziidae
Heterakidae
Heterocheilidae
Kathlaniidae
Maupasinidae
Oxyuridae
Oxyuridae is an family of nematode worms of the class secernentea. It consists of eight genera, one of which contains the human pinworm (Enterobius vermicularis). [more]
Quimperiidae
Rhigonematidae
Schneidernematidae
Seuratidae
Soboliphymatidae
Subuluridae
Thelastomatidae
Toxocaridae
Toxocaridae is a zoonotic family of parasitic nematodes that infect canids and felids and which cause toxocariasis in humans (visceral larva migrans and ocular larva migrans). The worms are unable to reproduce in humans. [more]
At least 24 species and subspecies belong to the Family Toxocaridae.
More info about the Family Toxocaridae may be found here.
References
- Tree of Life Web Project (ToL) (2002): Nematoda. Version of 2002-JAN-01. Retrieved 2008-NOV-02.
Footnotes
- ^ ToL (2002)
Sources
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