Parasitic nematodes of vertebrates

The Ascarididae are a family of the large intestinal roundworms. Members of the family are intestinal parasites, infecting all classes of vertebrates. It includes a number of genera, the most well known of which are:

Trichinella is the genus of parasitic roundworms of the phylum Nematoda that cause trichinosis (also known as trichinellosis). Members of this genus are often called trichinella or trichina worms. A characteristic of Nematoda is the one-way digestive tract, with a pseudocoelom (body cavity made up of only an ectoderm and endoderm).

Oxyuridae is a family of nematode worms of the class Secernentea.

The Trichocephalida (Trichinellida or Trichurida in other classifications) is an order of parasitic nematodes.

The Syngamidae are a family of nematodes which commonly parasitize mammals, birds, and rarely humans. They are classified in the Strongyloidae superfamily and Strongylata order.

species of a parasitic roundworm

Gnathostomiasis, also known as larva migrans profundus, is the human infection caused by any of six species of nematodes in the genus Gnathostoma, which infect vertebrates as second intermediate and primary hosts.

Gnathostoma is a genus of parasitic nematodes with multi-host life-cycles. Successive hosts include copepods, fish and amphibians, and carnivorous and omnivorous mammals. Infection with nematodes of some Gnathostoma species causes gnathostomiasis in humans.

Hysterothylacium is a genus of parasitic roundworms in the family Raphidascarididae. As of 2020 it consists of over 70 species and is considered one of the largest of the ascaridoid genera parasitising fish.

species of worm

Thelazia is a genus of nematode worms which parasitize the eyes and associated tissues of various bird and mammal hosts, including humans. They are often called "eyeworms", and infestation with Thelazia species is referred to as "thelaziasis" (occasionally spelled "thelaziosis"). Adults are usually found in the eyelids, tear glands, tear ducts, or the so-called "third eyelid" (nictitating membrane). Occasionally, they are found in the eyeball itself, either under the conjunctiva (the membrane that covers the white part of the eye) or in the vitreous cavity of the eyeball. All species of Thelaz

Heterakis is a genus of parasitic nematodes. Members of the genus are minute roundworms, hardly 1 cm long, infecting different species of gallinaceous birds, including chickens, turkeys, ducks, geese, grouse, guineafowl, partridges, pheasants, and quail. About 10 species are placed in the genus, but classification is often ambiguous due to their close resemblance, and a number of synonyms have arisen. H. gallinarum Schrank, 1788; H. isolonche von Linstow, 1906; and H. dispar Schrank, 1870 are the best understood species in terms of prevalence, pathogenicity, and biology. They inhabit the

species of worm

Gongylonema is a genus of thread-like nematode that was described by Molin in 1857. It is the only currently valid genus in the family Gongylonematidae, though the mysterious Spiruroides – usually placed in the Subuluridae, which are not closely related to Gongylonema among the Spiruria – might actually belong here. They are parasites of birds and mammals, transmitted by insects (especially beetles). Some 38 species are known, about 12 of which have been recorded in Europe.

Capillariidae is a family of parasitic nematodes. All its members are parasites in vertebrates when they are in their adult stage.

parasitic nematode that causes gnathostomiasis in humans