Introduction to trematodes description parasitology flashcards for trematodes total cards 43 subject veterinary medicine level not applicable created which animal does fasciola hepatica commonly fatal to by causing acute liver failure definition sheep: term which animal is fasciola hepatica commonly asymptomatic in definition. Introduction to trematodes (flukes) by richard d pearson, md, emeritus professor of medicine, university of virginia school of medicine fasciola hepatica, and opisthorchis sp: liver and bile ducts fasciolopsis buski, heterophyes heterophyes, and related organisms:.
Trematodes are flat and leaf like with bilaterally symmetrical body they are all hermaphrodites except schistosoma species the definitive host is man where sexual reproduction takes place for trematodes the number of intermediate hosts may be more than one life cycles of trematodes are summarized in table 103.
Fasciola species introduction fasciola, fasciolopsis and echinostoma species are trematodes which parasitise a variety of light infections due to fasciola hepatica may be asymptomatic however, they may produce cholangitis epigastric pain and nausea may also occur. Trematodes have an highly motile aquatic larval stage known as cercaria cercaria does what in the host seeks and invades the tissue of vertebrate hosts or encysts on aquatic vegetation the cercaria of bird flukes can produce human dermatitis called fasciola hepatica (sheep liver fluke. Fasciola species introduction fasciola, fasciolopsis and echinostoma species are trematodes which parasitize the liver and intestines of a variety of vertebrates. Fasciola hepatica (sheep liver fluke) mechanism of movement through the boys stays in liver because it burrows through intestinal wall and fluke increases in size in our abdominal cavity crawl around belly cavity and migrates around lessen capsule of liver is located and it burrows through the liver.
Schistosoma japonicum, fasciola hepatica and f gigantica are digenetic trematodes and, therefore, possess similar life cycles while schistosomiasis japonica has for a long time been recognised as a major disease of both humans and animals, infection with fasciolids has only been considered of relevance to animals. Fasciola hepatica, also known as the common liver fluke or sheep liver fluke, is a parasitic trematode (fluke or flatworm, a type of helminth) of the class trematoda, phylum platyhelminthes it infects the livers of various mammals, including humans. Start studying parasitology - trematodes learn vocabulary, terms, and more with flashcards, games, and other study tools.
Introduction fasciola hepatica is an hepatic parasite of the class trematoda , found mainly in ruminants, namely cows, sheep and goats, but also known to affect horses, pigs, deer and man it is found worldwide, and within the uk, with its prevalence ever increasing.