Fascioliasis is found in all continents except antarctica, in over 70 countries, especially where there are sheep or cattle. It is important to get an idea about the fasciola hepatica life cycle to determine the best treatment option. Disease can result from the migration of large numbers of. Fasciola hepatica, also known as the common liver fluke or sheep liver fluke. The life cycle, transmission, morphology, clinical presentation, and treatment of the f. Economically important infections are seen in cattle, sheep, alpacas, and llamas in three forms. Fasciola hepatica occupies a prominent place in parasitology because its life cycle was the first among digenetic trematodes to be completely elucidated, and that achievement has been the impetus for all subsequent investigations on life histories. Fasciola hepatica an overview sciencedirect topics. It infects the livers of various mammals, including humans. The disease caused by the fluke is called fasciolosis or fascioliasis, which is a type of helminthiasis and has been classified as a neglected. Ppt fasciola hepatica powerpoint presentation free to. Flukes ppt video online download untitled page 57 trematodes basicmedical key. The trematodes fasciola hepatica the sheep liver fluke and fasciola gigantica. The trematodes fasciola hepatica also known as the common liver fluke or the sheep liver fluke and fasciola gigantica are large liver flukes f.
Liver fluke disease fasciolosis is caused by the trematode parasite fasciola hepatica. Fasciola hepatica is a parasitic fluke that lives in the liver. Many mammals, including sheep, cattle, rodents, marsupials and humans, can act as definitive hosts. The life cycle of fasciola hepatica starts when a female lays eggs in the liver of an infected human. Fasciola hepatica, or common liver fluke, is the agent of fascioliasis, a disease. A related parasite, fasciola gigantica, also can infect people.
Eggs become embryonated in water 2, eggs release miracidia 3, which invade a suitable snail intermediate host 4, including the genera galba, fossaria and pseudosuccinea. Estimates of infection rates are as high as 80100% in some which. Complex and dynamic transcriptional changes allow the helminth. Fasciola hepatica is a topic covered in the johns hopkins abx guide to view the entire topic, please sign in or purchase a subscription official website of the johns hopkins antibiotic abx, hiv, diabetes, and psychiatry guides, powered by unbound medicine. Whereas the intermediate or secondary host is a snail in which all the larval stages are developed. Fasciola hepatica sheep liver fluke ppt video online download fasciola hepatica. Cycle of events in fasciola hepatica the life cycle of fasciola hepatica starts when a female lays eggs in the liver of an infected. Pronunciation of fasciola hepatica with 1 audio pronunciation, 4 synonyms, 1 meaning, 2 translations, 1 sentence and more for fasciola hepatica. Identifying differentially expressed transposons across four life cycle stages of fasciola hepatica introduction. Fasciolosis is a parasitic worm infection caused by the common liver fluke fasciola hepatica as well as by fasciola gigantica. Aula 2 fasciola hepatica parasitologia e epizootiologia.
The disease progresses through four distinct phases. The disease caused by the fluke is called fasciolosis or fascioliasis, which is a type of helminthiasis and has been. Fasciola hepatica simple english wikipedia, the free. Elucidation of the lifecycle of fasciola hepatica nature. Fasciolidae is divided into five genera by olsen et al. Fascioliasis, caused by the liver fluke fasciola hepatica, is an infection that occurs worldwide, although humans are accidental hosts.
Download scientific diagram sporocyst larva of fasciola zoology, celestial bodies, larvae digenea springerlink. Fasciola parasites live as adult flukes in the bile duct and immature eggs go out through feces and grow in fresh. Ateliers films danimation scientifiques 23,759 views. The life cycle of fasciola hepatica is complex and it is completed in two different hosts as it is a digenetic parasite.
Fascioliasis is a parasitic infection typically caused by fasciola hepatica, which is also known as the common liver fluke or the sheep liver fluke. Worm liver fluke clonorchis sinensis biological life cycle. Radiographic techniques, such as computerised tomography and ultrasonography. Fasciola hepatica can affect 46 species of wild and domestic animals as well as humans. 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. Fasciolahepatica is a common fluke found in the liver and bile ducts of cattle, sheep, goat, pig, rabbit, dog etc. Fasciola hepatica linnaeus 1758 encyclopedia of life life cycle of fasciola hepatica. Multiple choice questions on phylum platyhelminthes mcq. Fasciola hepatica and fasciola gigantica, as well as hybrids between the two species. Fasciola, commonly known as the liver fluke, is a genus of parasitic trematodes. Fasciola hepatica sheep liver fluke ppt video online download medical chemical corporation. Both species infect the liver tissue of a wide variety of mammals, including humans, in a condition known as fascioliasis.
These statements about parasites, parasite cleanse, colon and bowel cleansing have not been evaluated by the fda. Multiple choice questions on phylum platyhelminthes 1. The tropical liver fluke, fasciola gigantica causes fasciolosis, an important. It has been classified as a neglected tropical disease. Fasciola hepatica fasciola hepatica, also known as the common liver fluke or sheep liver fluke, is a parasitic flatworm of the class trematoda, phylum platyhelminthes that infects the livers of various mammals, including humans. Fasciola hepatica metagonimus yokogawai wikipedia, wolna encyklopedia trematodes diagnostic parasitology.
Habitat, structure and life history life cycle of fasciola hepatica. The disease is a plantborne trematode zoonosis, and is classified as a neglected tropical disease ntd. Immature fasciola eggs are discharged in the biliary ducts and in the stool 1. Its life cycle is completed in two hosts, a vertebrate, the sheep and an invertebrate host, which is the snail of the genera planorbis, limnaea and bulinus.
Fasciola survival of fasciola hepatica newly excysted juveniles nejs in. T he use of these herbal supplements is a traditional use that is not intended to be prescribed for, treat, or claim to cure any disease, including diseases involving the colon and bowels. Ltruncalula and succinea in which larval development occurs. It affects humans, but its main host is ruminants such as cattle and sheep. Labelled diagram of fasciola, human anatomy library. Adult liver flukes, which are about 10 mm wide and 25 mm long, live in the bile duct, feeding on blood, bile and epithelial cells. Download scientific diagram liver fluke fasciola hepatica life cycle. It is a parasitic trematode fluke or flatworm in the phylum platyhelminthes it infects the livers of various mammals, including humans. Life cycle summary trematode life cycle stages wikipedia bio205 prac. It is regarded as one of the most important single platyhelminth infections of ruminants in asia and africa. Kudo play with funny colored balloons and magic toy cars kudo toys family 380 watching live now.
Adult fasciola live in bile ducts producing eggs that are excreted with the feces. The trematodes fasciola hepatica the sheep liver fluke and fasciola gigantica, parasites of herbivores that can infect humans accidentally. Fasciola gigantica is a parasitic flatworm of the class trematoda, which causes tropical fascioliasis. Fasciola hepatica is an endoparasite that lives in the. In the life cycle of liver fluke the sheep get infection when they ingest. Is a parasitic flatworm of the class trematoda, phylum platyhelminthes that infects liver of various mammals, including humans. It causes damage to the liver tissues producing liver rot in all sheep breeding areas of the world. Fasciolidae is a family of trematodes and includes several parasites involved in the veterinary and medical sciences. Initial tissue invasion and subsequent migration within the host requires the concerted action of specific cathepsin b and l peptidases with distinct, yet.
The familys various species are localised in liver, gall bladder, and intestine. Links with this icon indicate that you are leaving the cdc website the centers for disease control and prevention cdc cannot attest to the accuracy of a nonfederal website. The trematodes fasciola hepatica also known as the common liver fluke or the. The primary host is sheep in which the adult liver flukes live. Developmental regulation of fasciola hepatica cathepsin peptidases. Liver fluke life cycle explained in detail hindi duration. Stool examination and elisa can be used for the initial diagnosis. Jefferies that historical accuracy is desirable and that the credit for scientific discovery should go where it is deserved. Linking to a nonfederal website does not constitute an endorsement by cdc or any of its employees of the sponsors or the information and products presented on the website. Transposable elements tes are highly repetitive mobile sequences, which play diverse roles in genome regulation. The disease caused by the fluke is called fascioliasis. Their life cycle includes an intermediate host, freshwater snails from the family lymnaeidae. It is known as the common liver fluke and causes a disease called fascioliasis. The adult worm averaging 30mm in length and mm in width, fasciola hepatica is.
96 161 1211 312 125 1232 717 1016 193 955 63 411 1220 714 1300 1121 528 1359 1386 392 1223 357 290 1265 751 805 1242 1073 833 802 1418 376 507 631 1199 1086 1534 1376 147 403 1004 1112 48 405 720 1255 1423 108 1030 980