Search results
Results From The WOW.Com Content Network
These actions may instigate entry into the dauer state (L1 alae), exiting of the dauer state (pheromone and or presence of an indicator for food availability), for sexual reproduction where the area around the vulva and gonads of the female and male use this family of receptors (RAM-5) where the nematode is likely to identify that reproductive ...
Internal anatomy of a male C. elegans nematode Cross-section of female Ascaris. The large circles filled with small green circles are the uterus and eggs. The long narrow feature is the digestive tract. The smaller red and orange circles are the ovaries and oviducts.
Some other nematodes have eye structures, but that of the female M. nigrescens is unique. It has a single eye, where other nematodes have two. Only the female has an eye, where eyes are present in both sexes of other eyed nematodes. Its eye takes up the entire front end of the body, the cylinder filling the entire body cavity.
It is a large nematode, ranging from 3–5 millimetres (1 ⁄ 8 – 1 ⁄ 4 in) in length. Anguina tritici has a three part esophagus and the esophageal glands do not overlap with intestine. The female body tends to be thickened and curved ventrally. It has a short stylet (8-11 μm). Females have one ovary and the vulva located posterior.
Ascaris is a nematode genus of parasitic worms known as the "small intestinal roundworms". [1] One species, Ascaris lumbricoides , affects humans and causes the disease ascariasis . Another species, Ascaris suum , typically infects pigs .
The immature female parasitizes the root for one to two weeks. [4] During this time the male deposits sperm, which the female stores until her gonads mature. The nematode can also reproduce via parthenogenesis, without fertilization. [4] Upon maturity the female exits the root and lays up to 200 eggs in a gelatinous matrix. [4]
Caenorhabditis elegans (/ ˌ s iː n oʊ r æ b ˈ d aɪ t ə s ˈ ɛ l ə ɡ æ n s / [6]) is a free-living transparent nematode about 1 mm in length that lives in temperate soil environments. [7]
This nematode is also known as the peanut root knot nematode. The word "Meloidogyne" is derived from two Greek words that mean "apple-shaped" and "female". [1] The peanut root knot nematode, M. arenaria is one of the "major" Meloidogyne species because of its worldwide economic importance. [2]