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Nematoda

线虫纲; 线虫类

WordNet (r) 3.0 (2006) (WordNet)

Nematoda
n 1: unsegmented worms: roundworms; threadworms; eelworms [synonym:
{Nematoda}, {phylum Nematoda}, {Aschelminthes}, {phylum
Aschelminthes}]

The Collaborative International Dictionary of English v.0.48 (gcide)

Nematoidea \Nem`a*toi"de*a\, prop. n. pl. [NL., fr. Gr. nh^ma,
nh`matos, thread -oid.] (Zool.)
A phylum of worms, having a long, round, and generally smooth
body; the roundworms. Called also {Nematodea}, and more
commonly {Nematoda}. Formerly, it was classed as a taxonomic
order.
[1913 Webster PJC]

Note: The trichina, stomach worm, and pinworm of man belong
to this group. See also {Vinegar eel}, under {Vinegar},
and {Gapeworm}.
[1913 Webster]

Nematoda \Nem`a*to"da\, prop. n. pl. (Zool.)
A phylum of worms, having a long, round, and generally smooth
body; the roundworms. They are mostly parasites, in plants
and animals, but some are free-living in soil or water. Also
called {Nematoidea}.
[1913 Webster PJC]

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Nematode - Wikipedia
The nematodes ( ˈnɛmətoʊdz ˈniːm - NEM-ə-tohdz or NEEM-; Ancient Greek: Νηματώδη; Latin: Nematoda), roundworms or eelworms constitute the phylum Nematoda
Nematode | Definition, Description, Diseases, Facts | Britannica
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 unusual places as vinegar, beer malts, and water-filled cracks deep within Earth’s crust
Nematodes - Examples, Characteristics, Anatomy, Life Cycle
Nematodes, commonly called roundworms or eelworms, are unsegmented, cylindrical invertebrates that belong to the phylum Nematoda They are among the most widespread and abundant animal groups on Earth
Nematodes Explained: The Good, the Bad and the Harmful
These microscopic worms are the most abundant animals on Earth, making up nearly four out of every five creatures on the planet The surprising part is that most of them are harmless — and even helpful Free-living nematodes enrich soil, recycle nutrients and support healthy crops But not all nematodes are allies
Nematodes - Cornell University
Entomopathogenic nematodes are extraordinarily lethal to many important insect pests, yet are safe for plants and animals
Nematoda (roundworms) | INFORMATION | Animal Diversity Web
Roundworms (nematodes) are bilaterally symmetrical, worm-like organisms that are surrounded by a strong, flexible noncellular layer called a cuticle Their body plan is simple The cuticle is secreted by and covers a layer of epidermal cells
What are Nematodes? | Department of Nematology
Nematodes have been reported from every continent on earth and occur in deserts, swamps, the oceans, the tropics and Antarctica Usually nematodes are invisible to all but a few specialists because most are microscopic and transparent How many nematodes are there?
Introduction to Nematodes - UC Davis
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, including humans, as well as species that feed on bacteria, fungi, algae, and on other nematodes
NEMATODA Definition Meaning | Merriam-Webster Medical
The meaning of NEMATODA is a phylum comprising elongated cylindrical worms without an epithelial coelomic lining, with dorsal and ventral nerve cords, and with lateral excretory ducts that are parasites of humans, animals, or plants or free-living dwellers in soil or water and are known as roundworms, eelworms, or nematodes
Introduction to the Nematoda - University of California Museum of . . .
Introduction to the Nematoda the roundworms There are thousands of nematodes Not only are there more than 15,000 known species of roundworms, but there are many thousands of individual nematodes in even a single handful of garden soil And they keep coming!

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