Rhabditida

Rhabditida is an order of nematodes in the subclass Rhabditia. It includes both free-living and parasitic species. The order is divided into two suborders, Rhabditina and Strongylina.

Taxonomy

The order Rhabditida is classified under the subclass Rhabditia, which is part of the class Secernentea. The order is further divided into two suborders, Rhabditina and Strongylina.

Rhabditina includes families such as Rhabditidae, Bunonematidae, and Cephalobidae. Strongylina, on the other hand, includes families like Strongylidae, Ancylostomatidae, and Ascarididae.

Characteristics

Rhabditida nematodes are characterized by their cylindrical bodies, which are tapered at both ends. They have a well-developed cuticle, which is often ornamented with ridges or other structures. The mouth is surrounded by lips, and the pharynx is muscular.

The reproductive system in Rhabditida is complex, with males having a single testis and females having two ovaries. Most species are dioecious, but some are capable of hermaphroditism.

Ecology

Rhabditida nematodes can be found in a variety of environments, including soil, freshwater, and marine habitats. Some species are free-living, while others are parasitic, infecting a wide range of hosts, including humans, animals, and plants.

Medical Importance

Several species of Rhabditida are of medical and veterinary importance. For instance, species in the family Strongylidae are common parasites of livestock and can cause significant economic losses. In humans, species in the family Ancylostomatidae, also known as hookworms, can cause hookworm disease, which can lead to anemia and malnutrition.

See Also

• Nematode
• Secernentea
• Rhabditia
• Rhabditina
• Strongylina

References

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Rhabditida

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  Adult Caenorhabditis elegans