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  1. Nematode - Wikipedia

    The nematodes (/ ˈnɛmətoʊdz / NEM-ə-tohdz or NEEM-; Ancient Greek: Νηματώδη; Latin: Nematoda), roundworms or eelworms constitute the phylum Nematoda. Species in the phylum inhabit a broad …

  2. Nematode | Definition, Description, Diseases, & Facts | Britannica

    Nov 6, 2025 · Nematodes are among the most abundant animals on Earth. They occur as parasites in animals and plants or as free-living forms in soil, fresh water, marine environments, and even such …

  3. Nematodes Explained: The Good, the Bad and the Harmful

    Oct 15, 2025 · Plant-parasitic nematodes like the root-knot nematode cause an estimated $125 billion in global crop losses annually. However, the damage caused by nematodes that infect humans is far …

  4. Nematodes - Cornell University

    The nematode may appear as little more than a biological syringe for its bacterial partner, yet the relationship between these organisms is one of classic mutualism.

  5. What are Nematodes? - Department of Nematology

    A small fraction of all nematode species are parasites of humans, livestock or agricultural crops. Consequently, these have attracted the most attention from Nematology researchers.

  6. Nematodes - PMC

    The main panel shows the phylogeny of the major nematode groups, information about ecological range and presence of parasites (black bars indicate definitive hosts, grey bars intermediate hosts), and …

  7. Introduction to Nematodes

    Nematodes are invertebrate roundworms that inhabit marine, freshwater, and terrestrial environments. They comprise the phylum Nematoda (or Nemata) which includes parasites of plants and of animals, …

  8. Nematodes are the most abundant multicellular animals in the planet. Nematodes have colonized nearly every habitat on earth. Nematodes can exist in extreme environmental conditions. Parasitic …

  9. Nematodes – Morphology, Classification, Examples - Biology Notes …

    Oct 1, 2024 · Nematodes are a diverse group of organisms known for their elongated, cylindrical bodies and unsegmented structure. These worm-like creatures are found in various environments, with …

  10. Kearney Agricultural Research and Extension Center

    The four primary types of nematodes - ring nematode, root lesion nematode, root knot nematode and dagger nematode. Ring nematode. The fatter, short nematode is ring nematode, Mesocriconema …