nematode, also called roundworm, any worm of the phylum Nematoda. Nematodes are among the most abundant animals on Earth.
Are nematodes hookworms?
Hookworms are nematode endoparasites that cause intestinal blood loss during a part of their life cycle. An estimated 576–740 million people are infected with Ancylostoma duodenale, Necator americanus, or both.
How do you identify a nematode worm?
Important morphological identification characters in nematodes include shape of head, number of annules, body length, length of stylet, shape of stylet knob, structure of lateral fields, presence/absence and shape of spermatheca, shape of female tail terminus, shape and length of spicule and gubernaculum [26].
Are nematodes tapeworms?
The parasitic intestinal helminths can be divided into three groups which include Nematodes (roundworms), Cestodes (tapeworms), and Trematodes (flukes). Helminths share numerous characteristics that contribute to their parasitic quality including the presence of attachment organs.
Is an earthworm a nematode?
Invertebrate animals commonly called "worms" include annelids (earthworms and marine polychaete or bristle worms), nematodes (roundworms), platyhelminthes (flatworms), marine nemertean worms ("bootlace worms"), marine Chaetognatha (arrow worms), priapulid worms, and insect larvae such as grubs and maggots.
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