nematode


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nematode,

common name for any worm of the phylum NematodaNematoda
, phylum consisting of about 12,000 known species, and many more predicted species, of worms (commonly known as roundworms or threadworms). Nematodes live in the soil and other terrestrial habitats as well as in freshwater and marine environments; some live on the deep
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nematode

[′nem·ə‚tōd]
(invertebrate zoology)
Any member of the Nematoda.
Of or pertaining to the Nematoda.

nematode

any unsegmented worm of the phylum (or class) Nematoda, having a tough outer cuticle. The group includes free-living forms and disease-causing parasites, such as the hookworm and filaria
References in periodicals archive ?
The study of the structure of nematode communities (abundance, frequency) in these stations study (table 1) allows us to rank the most abundant genera Aphelenchus, Tylenchus, Dorylaimus and Cephalobus with relative abundance which are respectively : 15.194 and 14.723 and 12.603 and 12.485.
Effect of soil physical and chemical characteristics on nematode trophic groups:
Rotylenchulus reniformis was the most abundant and prevalent nematode found in the rhizospheres of passion fruit, cupuacu, soursop and peach palm cultivated in the AFS.
All of the nematode species observed are phytoparasites and to our knowledge, this is the first time they have been reported to occur in fruit trees in the state of Amapa.
In earlier tests, they first sprayed nematodes onto tree limbs infested with lesser peachtree borers and then applied the fire gel over them.
The secretions, from nematode dorsal and sub-ventral glands, facilitate the migration of the nematode through induced expression levels of plant genes encoding for the cell wall degrading and modifying enzymes such as cellulases, expansins, glucanases and pectate lyases (Wyss and Grundler 1992; Golinowski et al., 1996; Smant et al., 1998; Goellner et al., 2001; Wieczorek et al., 2006; Abad et al., 2008).
According to the research conducted by the plant quarantine department of the Kostroma region of the Tverskaya MVL, no viable eggs and larvae of the golden potato nematode were found in the soil samples.
javanica were the most widespread root-knot nematode species in all the countries.
With respect to gender of the host animals, the prevalence of nematode infection was significantly higher in male as compared to female hosts (81.6% vs.
Among this apparent nematode diversity, we decided to concentrate our efforts in characterizing specimens from the newly described species Sclerorhabditis neotropicalis employing both scanning electron microscopy and phylogenetic analyses.
Measurements were made on the plant growth parameters (shoot length, fresh and dry shoot and root weight) observations were made on the root population of nematode viz., Number of galls per plant, Number of egg masses per plant, Number of eggs per egg mass, Final nematode population per pot.