Liver flukes in sheep liver

Référence de la vidéo 11941837
Liver flukes. Adult liver flukes (Fasciola hepatica) in a sheep's liver. The liver fluke is a parasitic trematode (flatworm). It has a ventral sucker on its underside, and a powerful oral sucker at its anterior, which connects with its gut. Liver flukes infect the livers of various mammals, including humans, causing a disease known as fascioliasis. Immature flukes emerge from cysts ingested with infected vegetation. They migrate into the bile ducts via the duodenum and liver, where they feed on blood and tissue. They mature and lay eggs which contaminate water via the host's faeces. The eggs hatch and infect certain freshwater pond snails from which larvae later emerge. The larvae form cysts on nearby vegetation, thus continuing the fluke's life cycle. Footage filmed at Ridgeway Research, Gloucestershire, United Kingdom.
Licence : Droits gérés
Crédit : Science Photo Library / Stammers, Sinclair
Model Release : Non requis
Durée : 27 Secondes
Aspect ratio : 16/9
Restrictions : -

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