Nematodes are the second most diverse animal phylum (after the arthropods), with about 20,000 species. Free-living nematodes are abundant in soils and sediments, where they feed on bacteria and detritus. Some nematodes are plant parasites, including organisms that cause disease in economically important crops. Others parasitize animals (including humans). Well-known parasitic nematodes include hookworms, pinworms, Guinea worm (genus Dracunculus), and intestinal roundworms (genus Ascaris).
Most nematodes are long, slender, almost featureless externally, tapered at both ends, and round in cross section.
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Sites 24
Information from Wikipedia on this nematode that lives in the swimbladders of eels, and the life cycle of the parasite.
Information on the nematodes, Anisakis simplex and Pseudoterranova decipiens, which can infect humans who eat raw fish, with diagrams and information on their life cycle.
Research project on this marine parasitic nematode by Rachel Nelson at the University of Wisconsin-LaCrosse.
Links to films showing the growth and development of C. elegans from researchers worldwide, housed in the laboratory of Bob Goldstein at UNC Chapel Hill.
Provides an illustrated key to the genera of free-living marine nematodes in this superfamily.
Greg Eddy provides information on the Dog Heartworm, its classification, adaptation, habitat, nutrition, reproduction and interaction with its host.
Information on the nematode Dracunculus medinensis which can infect humans and cause guinea worm disease, with a diagram and information on its life cycle.
Embryonic development is described with links to illustrated movies.
Information from Wikipedia on these roundworms that are lethal insect parasitoids, and some of which are used in the biological control of insect populations.
Information on the nematodes Gnathostoma spinigerum and Gnathostoma hispidum which can infect vertebrates, with a diagram and information on their life cycle.
Photographic study by Walter Dioni on this and other nematodes found living in a cockroach with many detailed images.
Information from Wikipedia on this parasitic nematode, Dirofilaria immitis, which is spread by mosquitoes.
Information on the nematodes Ancylostoma duodenale and Necator americanus which can invade and parasatize humans, and a diagram and information on their life cycle.
Paper by David Gems examining the great variability in ageing patterns observed in different nematode species.
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Phylogenetic information from the Tree of Life Web Project.
Nematodes listed alphabetically by genera.
Bilaterally symmetrical, worm-like organisms.
An introduction to the roundworms. Includes characteristics, ecology, anatomy, classification and information on the species that parasatise humans.
A mass of information on nematodes, their study, surveys, agricultural issues, identification and systematics.
Introduction to soil nematodes, their classification, feeding habits, place in the community and function in the decomposition process, with an anatomical diagram of a typical plant parasitic species.
Information on the nematode Strongyloides stercoralis which can infect humans, and a diagram and information on its complex life cycle.
Research project by Andrew Maiers at the University of Wisconsin-LaCrosse.
Information on Trypanosoma cruzi, the causal agent of Chagas disease which is transmitted by blood-sucking triatomine bugs, with diagrams and information on the life cycle of the parasite.
A database of behavioral and structural anatomy.
Bilaterally symmetrical, worm-like organisms.
Information on the nematodes Ancylostoma duodenale and Necator americanus which can invade and parasatize humans, and a diagram and information on their life cycle.
Information on Trypanosoma cruzi, the causal agent of Chagas disease which is transmitted by blood-sucking triatomine bugs, with diagrams and information on the life cycle of the parasite.
Information on the nematode Dracunculus medinensis which can infect humans and cause guinea worm disease, with a diagram and information on its life cycle.
Information on the nematodes Gnathostoma spinigerum and Gnathostoma hispidum which can infect vertebrates, with a diagram and information on their life cycle.
Information on the nematodes, Anisakis simplex and Pseudoterranova decipiens, which can infect humans who eat raw fish, with diagrams and information on their life cycle.
Information on the nematode Strongyloides stercoralis which can infect humans, and a diagram and information on its complex life cycle.
Links to films showing the growth and development of C. elegans from researchers worldwide, housed in the laboratory of Bob Goldstein at UNC Chapel Hill.
Phylogenetic information from the Tree of Life Web Project.
An introduction to the roundworms. Includes characteristics, ecology, anatomy, classification and information on the species that parasatise humans.
A database of behavioral and structural anatomy.
Provides an illustrated key to the genera of free-living marine nematodes in this superfamily.
Introduction to soil nematodes, their classification, feeding habits, place in the community and function in the decomposition process, with an anatomical diagram of a typical plant parasitic species.
Embryonic development is described with links to illustrated movies.
Research project on this marine parasitic nematode by Rachel Nelson at the University of Wisconsin-LaCrosse.
Research project by Andrew Maiers at the University of Wisconsin-LaCrosse.
Greg Eddy provides information on the Dog Heartworm, its classification, adaptation, habitat, nutrition, reproduction and interaction with its host.
Information from Wikipedia on this nematode that lives in the swimbladders of eels, and the life cycle of the parasite.
Information from Wikipedia on these roundworms that are lethal insect parasitoids, and some of which are used in the biological control of insect populations.
Information from Wikipedia on this parasitic nematode, Dirofilaria immitis, which is spread by mosquitoes.
A mass of information on nematodes, their study, surveys, agricultural issues, identification and systematics.
Paper by David Gems examining the great variability in ageing patterns observed in different nematode species.
[PDF]
Nematodes listed alphabetically by genera.
Photographic study by Walter Dioni on this and other nematodes found living in a cockroach with many detailed images.
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