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The nematodes (/ ˈ n ɛ m ə t oʊ d z / NEM ... The large circles filled with small green circles are the uterus and eggs. The long narrow feature is the digestive ...
This is a very large nematode, the male about 4 to 6 centimetres long [1] and the female known to exceed 20 centimetres. [3] The size is unusual for entomopathogenic nematodes, which are generally almost microscopic. [2]
Placentonema gigantissima is a giant nematode that parasitizes the placenta of the sperm whale. With a length of 8.4 metres (28 ft) and a diameter of 2.5 centimetres (0.98 in), it is potentially the largest nematode worm ever described, inhabiting the largest mammals of the world. [1] It was discovered in the 1950s around the Kuril Islands. [2]
Nematoida is a clade of pseudocoelomate free living or parasitic animals.It consists of phyla Nematoda and Nematomorpha. [3] [4] The two groups share a number of features in common; the presence of a cloaca in both sexes, aflagellate sperm, and a cuticle made of collagen.
H. galeatus is described as being a relatively large nematode (1.1–15.mm) with a large heavily defined cephalic framework, including a large stylet with tulip shaped knobs. The nematode has a cuticle with 4–6 layers. The lips are offset with 4–5 annules, which are divided into tile-like structures.
Some nematodes have a fixed, genetically determined number of cells, a phenomenon known as eutely. The adult C. elegans hermaphrodite has 959 somatic cells and the male has 1033 cells, [ 56 ] [ 57 ] [ 58 ] although it has been suggested that the number of their intestinal cells can increase by one to three in response to gut microbes ...
Xiphinema diversicaudatum are large nematodes, 4.0mm-5.5mm in length. [2] They have a long protrusible odontostyle , which is around 0.1 mm long and capable of penetrating into a host's vascular tissue. [ 4 ]
Xiphinema are large nematodes, with an adult length between 1.5mm – 5.0mm. [1] They have a long protrusible odontostyle, with 3 basal flanges at the posterior end of the stylet and a relatively posterior guiding ring when compared to the genus Longidorus. [3]
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