Nematoda


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Related to Nematoda: Echinodermata

roundworm

 [round´werm]
any member of the class nematoda, somewhat resembling common earthworms in appearance; many are found as parasites in humans or other animals. Those most frequently infecting humans include Ascaris lumbricoides (see ascariasis); Enterobius vermicularis (the pinworm; see enterobiasis); the hookworm (see hookworm disease); the filaria (see filariasis); and the trichina (see trichinosis).

Nem·a·to·da

(nem'ă-tō'dă),
The roundworms, a large phylum that includes many of the helminths parasitic in humans and a far greater number of plant-parasitic and free-living soil and aquatic nonparasitic species. For practical purposes, the parasitic nematodes may be placed in two groups, based on their adult habitat in the human body: 1) the intestinal roundworms (for example, the genera Ascaris, Trichuris, Ancylostoma, Necator, Strongyloides, Enterobius, and Trichinella); and 2) the filarial roundworms of the blood, lymphatic tissues, and viscera (for example, the genera Wuchereria, Mansonella, Loa, Onchocerca, and Dracunculus).
[nemat- + G. eidos, form]

Nematoda

/Nem·a·to·da/ (nem″ah-to´dah) a class of helminths (phylum Aschelminthes), the roundworms, many of which are parasites; in some classifications, considered to be a phylum, and sometimes known as Nemathelminthes, or a class of that phylum.

Nem·a·to·da

(nem-ă-tō'dă)
The roundworms, a large class of the phylum Aschelminthes that includes many of the helminths parasitic in humans. Parasitic nematodes include the intestinal roundworms and the filarial roundworms of the blood, lymphatic tissues, and viscera and some subcutaneous and migratory roundworms.
[nemat- + G. eidos, form]
References in periodicals archive ?
Foraminifera 256,2 [+ o -] 205,6 32 681 Nematoda 1,3 [+ o -] 2,1 0 6 Oligochaeta 6,6 [+ o -] 11,4 0 30 Ostracoda 2,6 [+ o -] 3,0 0 8 Copepoda 455,3 [+ o -] 323,8 26 1065 Tanaidacea -- -- -- Diptera (huevos) 9,6 [+ o -] 11,0 1 30 Meiofauna Tunas de Zaza Media [+ o -] DE Min.
Owing to these two water bodies, the total share of Nematoda among meiobenthos was 39%.
Dentro de la clase nematoda se encuentra la familia Anisakidae con 24 generos; las larvas de los generos Anisakis, Pseudoterranova y Contracaecum, son las que con mas frecuencia pueden producir patologia en el hombre (14).
666 Nematoda Rhabdolaimus terrestris de Mann, 1880 0.
In total, 623 helminths, which represented Digenea, Eucestoda, Nematoda, and Acanthocephala, were recorded from 100 common and thick-billed murres collected from breeding colonies along the coasts of Labrador, Newfoundland, and Greenland.
Parasite Location Prevalence (a) Apicomplexa Eimeria pilarensis NM 1/12 (8%) Eimeria rioarribaensis NM 4/22 (18%) MX (b) 1/21 (5%) Trematoda Plagiorchis micracanthos SD 1/1 (100%) Nematoda Longibucca lasiura CAN (d) 1/10 (10%) Acari Leptotrombidium myotis SD not stated MT 1/6 (17%) OR not stated Macronyssidae (nymphs) CA 1/1 (100%) (c) Macronyssus crosbyi NM 1/1 (100%) Ornithodoros sp.