Image:Clonorchis LifeCycle.gif
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Clonorchis_LifeCycle.gif (562 × 435 pixel, file size: 29 KB, MIME type: image/gif)
| This is a file from the Wikimedia Commons. The description on its description page there is shown below. |
| Description |
Embryonated eggs are discharged in the biliary ducts and in the stool . Eggs are ingested by a suitable snail intermediate host ; there are more than 100 species of snails that can serve as intermediate hosts. Each egg releases a miracidia , which go through several developmental stages (sporocysts , rediae , and cercariae ). The cercariae are released from the snail and after a short period of free-swimming time in water, they come in contact and penetrate the flesh of freshwater fish, where they encyst as metacercariae . Infection of humans occurs by ingestion of undercooked, salted, pickled, or smoked freshwater fish . After ingestion, the metacercariae excyst in the duodenum and ascend the biliary tract through the ampulla of Vater . Maturation takes approximately 1 month. The adult flukes (measuring 10 to 25 mm by 3 to 5 mm) reside in small and medium sized biliary ducts. In addition to humans, carnivorous animals can serve as reservoir hosts. |
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| Source |
Originally from en.wikipedia; description page is/was here. |
| Date |
2005-05-11 (original upload date) |
| Author |
Original uploader was PDH at en.wikipedia |
| Permission |
PD-USGOV-HHS-CDC. |
[edit] License information
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[edit] Original upload log
(All user names refer to en.wikipedia)
- 2005-05-11 11:56 PDH 562×435×7 (29271 bytes) Embryonated eggs are discharged in the biliary ducts and in the stool . Eggs are ingested by a suitable snail intermediate host ; there are more than 100 species of snails that can serve as intermediate hosts. Each egg releases a miracidia , which go th
