Nematodes, commonly known as roundworms, are one of the commonest groups of animals, found in most land, freshwater, and marine environments. Of over 80,000 known species, about 15,000 are parasitic. Nematodes are classified as members of the phylum Nematoda.

Various types of free-living (non-parasitic) nematodes feed on algae, fungi, small animals, fecal matter, and carrion. Nematodes are an important component of the decomposition system. Some species are considered to be crop pests, while others are predators of crop pests.

Parasitic nematodes exhibit a great variety of lifestyles, and depending on species may infest humans, animal species, or may move from one to the other.

Some nematodes parasitic on humans include:


Others:

Interwiki links

Cookies help us deliver our services. By using our services, you agree to our use of cookies.