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The estimations of the number of eggs in a gravid female pinworm range from about 11,000 [19] to 16,000. [21] The egg-laying process begins about five weeks after initial ingestion of pinworm eggs by the human host. [19] The gravid female pinworms migrate through the colon towards the rectum at a rate of 12 to 14 cm per hour. [19]
It consists of eight genera, one of which contains the human pinworm (Enterobius vermicularis). [3] References This page was last edited on 20 ...
Enterobius vermicularis, the human pinworm; Gyrinicola batrachiensis, a parasite or mutualist of amphibian tadpoles; Syphacia oryzomyos, a parasite of the marsh rice rat (Oryzomys palustris) Skrjabinema ovis, a parasite of ruminants
The pinworms can also enter the urethra, and presumably, they carry intestinal bacteria with them. [15] According to Gutierrez (2000), a statistically significant correlation between pinworm infection and urinary tract infections has been shown; [ 15 ] however, Burkhart & Burkhart (2005) maintain that the incidence of pinworms as a cause of ...
Using, in pinworms, mother-son matings are not expected to occur commonly in this life cycle since a female's progeny must leave the host. However, in G. batrachiensis , a second mode of reproduction has developed that makes mother-son matings possible: the method by which females produce two types of eggs, thin and thick shelled, as explored ...
Gongylonema pulchrum, along with most other Gongylonema nematodes, has a broad natural host range. This includes hedgehogs, cattle, dogs, cats, ruminants, rabbits, and skunks. The vector and intermediate host for Gongylonema pulchrum infections are coprophagous insects (dung beetles and cockroaches). [citation needed]
Top: A male ornate boxfish (aracana ornata). Bottom left: a close-up of the boxfish’s natural hexagonal pattern. Bottom center: fish pattern simulation based on Turing’s reaction-diffusion theory.
Trichinella spiralis is a viviparous [1] nematode parasite, occurring in rodents, pigs, bears, hyenas and humans, and is responsible for the disease trichinosis.It is sometimes referred to as the "pork worm" due to it being typically encountered in undercooked pork products.