| Spirurida | |
|---|---|
| |
|
Dirofilaria immitis larva Magnification 400× | |
Scientific classification
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Nematoda |
| Class: | Chromadorea |
| Order: | Rhabditida |
| Suborder: | Spirurida |
| Superfamilies | |
|
10, but see text | |
Spirurida falls under the phylum
Nematoda class
Chromadorea and order Spirurida. They are characterized by their elongated, cylindrical bodies and unsegmented structure. Like all nematodes, they have neither a
circulatory nor a
respiratory system.
Some Spirurida, like the genus Gongylonema, can cause disease in humans. One such disease is a skin infection with Spirurida larvae, called " creeping disease". Some species are known as eyeworms and infect the orbital cavity of animal hosts.
Systematics
The Camallanida are sometimes included herein as a suborder, and the Drilonematida are sometimes placed here as a superfamily. There are doubts about the internal systematics of the Spirurida, and some groups placed herein might belong to other spirurian or even secernentean lineages. [1]
The following superfamilies are at least provisionally placed in the Spirurida:
- Acuarioidea
- Aproctoidea
- Diplotriaenoidea
- Filarioidea
- Gnathostomatoidea
- Habronematoidea
- Physalopteroidea
- Rictularioidea
- Spiruroidea
- Thelazioidea
References
Citations
- ^ ToL (2002)
Sources
- Tree of Life Web Project (ToL) (2002): Nematoda. Version of 2002-JAN-01. Retrieved 2008-NOV-02.
External links
-
Media related to
Spirurida at Wikimedia Commons
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