Parasitic roundworms
The nematodes or roundworms (Phylum Nematoda from Greek νῆμα (nema): "thread" + ode "like") are one of the most common phyla of animals, with over 20,000 different described species (over 15,000 are parasitic). Nematodes commonly parasitic on humans include whipworms, filarids, hookworms, pinworms, ascarids, and horsehair worms.
Hookworms[edit]
Hookworm lifecycle
A hookworm (Ancylostoma caninum) egg.
Hookworms
Pinworms[edit]
Life cycle of Enterobius vermicularis-pinworm
Enterobius vermicularis pinworm
Head of Enterobius vermicularis
Enterobius vermicularis
head of a pinworm, colored
See also Enterobius vermicularis
Ascarids[edit]
Life cycle of Ascaris lumbricoides
Fertilized egg of Ascaris lumbricoides
Ascaris lumbricoides - adult
Horsehair worms[edit]
Paragordius tricuspidatus, a horsehair worm-infects insects
Spinochordodes tellinii and its grasshopper host
Other[edit]
Canine roundworm egg.
Canine roundworm (Toxascaris leonina) egg.
A feline roundworm (Toxocara cati) egg.
Strongyloides stercoraliz larva cause of strongyloidiasis.
Meloidogyne incognita-plant parasite
Heterodera glycines- Root cyst nematode
Soybean cyst nematode and egg
Nematode teeth
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