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Ascaris lumbricoides is a large parasitic roundworm of the genus Ascaris. ... Ascaris lumbricoides is characterized by its great size. Males are 2–4 mm (0.08–0.2 ...
A. lumbricoides was originally called Lumbricus teres and was first described in detail by Edward Tyson in 1683. [8] The genus Ascaris was originally described as the genus for Ascaris lumbricoides by Carl Linnaeus in 1758. [9] The morphologically similar Ascaris suum was described from pigs by Johann August Ephraim Goeze in 1782. [9]
Ascariasis is a disease caused by the parasitic roundworm Ascaris lumbricoides. [1] Infections have no symptoms in more than 85% of cases, especially if the number of worms is small. [1] Symptoms increase with the number of worms present and may include shortness of breath and fever at the beginning of the disease. [1]
Ascaris lumbricoides. Hookworm Trichuris trichiura. Toxocara spp. Timeline of lifecycle stages Larval formation Some days (eggs can survive for months) [26] 9–15 days [23] 18 days to several weeks [27] 1–2 days [28] 15–30 days [29] Larval growth After hatching, the larvae develop into cysticercoid, which can survive for years in an animal ...
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.
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Female Ascaris lumbricoides. Ascariasis of STH is caused by the large roundworm A. lumbricoides. It is estimated to be the most widespread STH, affecting approximately 1 billion people. The victims constitute about half of the populations in tropical and subtropical areas. Most conditions are mild and often show little or no symptoms. Heavy ...
The pinworm (species Enterobius vermicularis), also known as threadworm (in the United Kingdom, Australia and New Zealand) or seatworm, is a parasitic worm.It is a nematode (roundworm) and a common intestinal parasite or helminth, especially in humans. [7]