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  2. Hoplolaimus - Wikipedia

    en.wikipedia.org/wiki/Hoplolaimus

    Hoplolaimus is a genus of nematodes known commonly as lance nematodes. [1] They are parasites of plants, and three species are pests of agricultural crops. [2] These nematodes are usually about 1 to 1.5 millimeters long; [1] some reach 2 millimeters. [2] They have large stylets with knobs shaped like anchors or tulips.

  3. Nematode - Wikipedia

    en.wikipedia.org/wiki/Nematode

    Extremity of a male nematode showing the spicule, used for copulation, bar=100 μm [48] Most nematode species are dioecious, with separate male and female individuals, though some, such as Caenorhabditis elegans, are androdioecious, consisting of hermaphrodites and rare males. Both sexes possess one or two tubular gonads. In males, the sperm ...

  4. Hoplolaimus galeatus - Wikipedia

    en.wikipedia.org/wiki/Hoplolaimus_galeatus

    The nematodes body is slightly curved when relaxed. [4] [5] Females have two ovaries which overlap the spermatheca. The vulva is found near the center of the body and the rectum near the tip of the tail. Males are smaller than the female, have an arcuate spicules, gubernaculum with titillate and a broad striated bursa. [5]

  5. Dracunculus medinensis - Wikipedia

    en.wikipedia.org/wiki/Dracunculus_medinensis

    Dracunculus medinensis (Guinea worm, dragon worm, fiery serpent [1]) is a nematode that causes dracunculiasis, also known as guinea worm disease. [2] The disease is caused by the female [3] which, at around 80 centimetres (31 inches) in length, [4] is among the longest nematodes infecting humans. [5]

  6. Mermis nigrescens - Wikipedia

    en.wikipedia.org/wiki/Mermis_nigrescens

    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.

  7. Steinernema - Wikipedia

    en.wikipedia.org/wiki/Steinernema

    The nematode moves out of its developmentally arrested third, nonfeeding stage, triggered by either bacterial or insect food signals. The nematodes feed on the bacteria and moult to the fourth stage, reaching adulthood within a few days. with separate male and female individuals. [6] Nematode development continues for two to three generations.

  8. Ascaris lumbricoides - Wikipedia

    en.wikipedia.org/wiki/Ascaris_lumbricoides

    Males are 2–4 mm (0.08–0.2 in) in diameter and 15–31 cm (5.9–12 in) long. The male's posterior end is curved ventrally and has a bluntly pointed tail. Females are 3–6 mm (0.1–0.2 in) wide and 20–49 cm (7.9–19 in) long. The vulva is located in the anterior end and accounts for about one-third of its body length.

  9. Tylenchulus semipenetrans - Wikipedia

    en.wikipedia.org/wiki/Tylenchulus_semipenetrans

    The J2 male has a stylet while the J3 and J4 have a weaker stylet. The J2 female is longer and thinner than males and they do not molt until feeding site is established. The female juveniles begin feeding ectoparasitically on epidermal root cells. It is not until the female citrus nematode becomes a young adult that she becomes the infective stage.