The life cycle of Fasciola gigantica is as follows: eggs (transported with feces) → eggs hatch → miracidium → miracidium infect snail. Life ca passes its life cycle in two different hosts. • Definitive hosts- Sheep,goat, cattle or man. Adult worm in the biliary passages of the liver. Keywords: Fasciola gigantica, life history, biological characteristic, The general life cycle of fasciolids is described in the following passage.
|Published (Last):||10 October 2017|
|PDF File Size:||16.32 Mb|
|ePub File Size:||20.96 Mb|
|Price:||Free* [*Free Regsitration Required]|
The habitat of Fasciola gigantica changes with the stage of its life cycle. Free-swimming miracidia encountered fsaciola penetrated the appropriate snail intermediate host L. Lymnaea auricularia rubiginosa was used as the intermediate host, and Oryza sativa was used for encystment of the metacercariae, while Mus musculus was used as the definitive host for maturation study.
Moreover, the previous studies focused on F. The parasite infects cattle and buffalo and can also be seen regionally in goats, sheep, and donkeys. Cheesbrough, ; Read, Key Reproductive Features sexual asexual fertilization internal Non-embryonic eggs are laid within the mammalian host and are passed through to the intestinal tract where they are expelled in the feces. Other measures have included killing snails, treating infected animals, and draining pasture lands. The sporocyst mature and release rediae.
Retrieved from ” https: The unique characteristics of this stage include 2 lateral projections at the posterior end. Russell Kirk Hollis for approving English grammar.
CDC – DPDx – Fascioliasis
The exposed snails in the clay pots were supplied with fresh lettuce leaves for feeding the snails. A total of 1, F. Moreover, Yadav and Gupta [ 15 ] reported that after infection of 2 rabbits with 50 F. CDC has developed an immunoblot assay for fascioliasis based on a recombinant F. This article has been cited by other articles in PMC.
As with other trematodes, Fasciola develop in a molluscan intermediate host. Humans can become infected by ingesting metacercariae-containing freshwater plants, especially watercress. Microscopic identification of eggs is useful in the chronic adult stage.
D Egg with escaping miracidium. Fasciola hepatica infect various animal species, mostly herbivores. After ingestion, the metacercariae excyst in the duodenum and migrate through the intestinal wall, the peritoneal cavity, and the liver parenchyma into the biliary ducts, where they develop into adults. fascipla
Metacercarial production of Lymnaea viridis experimentally infected with Fasciola hepatica. Juvenile and adult flukes were recovered from 16 mice experimentally infected with metacercariae, with the average recovery rate of In infected snails, the miracidia transformed to the next 3 larval stages, referred to as the sporocyst, redia, and cercaria. Author information Article notes Copyright and License information Disclaimer. Under optimal conditions, the development process in the snail may be completed in 5 to 7 weeks; cercariae are then shed in the water around the snail.
Unstained adult of F. The eggs of F.
Fossaria bulamoides, a host for F. Ingestion of Fasciola gigantica metacercariae by the intermediate host snail, Lymnaea ollula, and infectivity of discharged metacercariae.
Metacercariae cysts wait to be taken up by other ruminant host to repeat the life cycle. Description of a new trematode worm Fasciola gigantica. The adult flukes Fzsciola hepatica: Skip directly to search Skip directly to A to Z list Skip directly to navigation Lofe directly to page options Skip directly to site content.
The anterior end is cone-shaped, unlike the rounded anterior end of Fasciolopsis buski. In places where both F. To obtain approval please contact the Parasitic Diseases Public Inquiries at or at parasites cdc.