Credit: SINCLAIR STAMMERS/SCIENCE PHOTO LIBRARY

Caption: A cercaria, larva of the liver fluke (Fasciola hepatica), a parasitic flatworm. Cercariae are free-living larvae which emerge from the liver fluke's intermediate host, certain species of freshwater snail. The larvae form cysts on nearby vegetation, which are ingested by ruminants, or sometimes by humans. Immature flukes emerge from the cysts and migrate into the bile ducts where they mature and pass eggs into the host's faeces. The eggs can contaminate water and hatch into larvae which infect snails, thus continuing the fluke's life cycle. Liver flukes cause fascioliasis, a liver disease with symptoms including digestive problems, fever, pain, anaemia and jaundice. Footage filmed at Ridgeway Research, Gloucestershire, United Kingdom.

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Keywords: 20 seconds or greater, agricultural, agriculture, animal, aquatic, biological, biology, cercaria, cercariae, close up, close-up, closeup, disease, endoparasite, farm, farming, fasciola hepatica, fascioliasis, fasciolosis, fauna, flatworm, fluke, healthcare, hepatic, intermediate, invertebrate, invertebrates, larva, larvae, larval, life cycle, light, light microscope, liver, liver fluke, locomotion, medical, medicine, microbe, microbiology, micrography, microorganism, microscope, microscopic, microscopy, motile, motion, movement, moving, nature, no-one, nobody, optical, organism, parasite, parasitic, pest, platyhelminthes, ridgeway research, sheep, stage, swim, swimming, tail, trematode, united kingdom, vector, veterinary, water, wildlife, zoological, zoology, zoonosis

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Liver fluke cercaria

K004/7969 Rights Managed

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Duration: 00:00:21.23

Frame size: 1920x1080

Frame rate: 25

Audio: No

Format: QuickTime, Photo JPEG 100%, progressive scan, square pixels

File size: 692.3M

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Capture format: XDCAM EX

Codec: Apple ProRes 422 (HQ)

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