Cercaria - Wikipedia
A cercaria (plural cercariae) is a larval form of the trematode class of parasites. It develops within the germinal cells of the sporocyst or redia. [1] A cercaria has a tapering head with large penetration glands. [2] It may or may not have a long swimming "tail", …
Trematode life cycle stages - Wikipedia
Not all trematodes follow the typical sequence of eggs, miracidia, sporocysts, rediae, cercariae, and adults. In some species, the redial stage is omitted, and sporocysts produce cercariae. In other species, the cercaria develops into an adult within the same host.
CDC - DPDx - Cercarial Dermatitis
Cercarial dermatitis (“swimmer’s itch”, “clam-digger’s itch”, “duck itch”) is caused by the cercariae of certain species of schistosomes whose normal hosts are birds and mammals other than humans.
Cercarial Dermatitis: Symptoms, Treatment, and More - Healthline
2017年3月29日 · Cercarial dermatitis, also known as swimmer’s itch, is an itchy rash caused by a tiny parasitic worm. It’s contracted by swimming or wading in infested fresh water lakes or ponds. The parasite’s...
Cercaria - an overview | ScienceDirect Topics
An immature trematode, usually encysted, in the open or in an intermediate host; develops from a cercaria. The larval stage of a nematode (round worm) produced by an adult female that temporarily resides in the blood of another tissue of its vertebrate host.
Cercaria - an overview | ScienceDirect Topics
Cercaria comprises two distinct parts: the body and the tail. The body of the cercaria is a miniature of the adult, and the internal organs, which resemble those of the adult, are the suckers, the alimentary tract, and the excretory system.
Cercaria | definition of cercaria by Medical ... - Medical Dictionary
The free-swimming trematode larva that emerges from its host snail; it may penetrate the skin of a final host (as in Schistosoma of humans), encyst on vegetation (as in Fasciola ), in or on fish (as in Clonorchis ), or penetrate and encyst in various arthropod hosts.
Cercaria - an overview | ScienceDirect Topics
Cercariae are tiny free-swimming larvae with a forked tail that can seek out and attach to the skin of humans while they are in contact with infested water during occupational activities (e.g., washing dishes, fetching water for domestic use, or fishing) or leisure and recreational activities (e.g., bathing and playing in the water).
Cercariae (Platyhelminthes: Trematoda) as neglected components …
2012年2月28日 · A defining characteristic of trematode life cycles is the cercariae, a mainly planktonic free-living larval stage that emerges into the aquatic environment from infected molluscan hosts. Cercariae are lecithotrophic (non-feeding) larvae analogous of meroplankton.
Cercaria | zoology | Britannica
…large larvae form, called a cercaria. The size of this cercaria and its hopping mode of locomotion cause it to resemble a small, swimming crustacean or mosquito larva, with the result that fish mistake it for food and swallow it.