Lanceolate fluke , or Lanceolate fluke ( lat. Dicrocoelium dendriticum ) - a species of parasitic flatworms of trematodes of the genus Dicrocoelium from the family Dicrocoeliidae of the order Plagiorchiida [1] .
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 Parasite Dicrocoelium dendriticum | ||||||||||||||||||
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| Dicrocoelium dendriticum ( Rudolphi , 1819) | ||||||||||||||||||
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Description
They have a size of 0.5-1.2 cm. In their life cycle, they undergo an intermediate developmental stage on land snails ( Zebrina , Fruticicola fruticum , Cochlicopa lubrica , etc.) and formic ants (Dlussky, 1967). Sporocysts and daughter sporocysts develop in the snail liver, giving birth to cercariae. The second intermediate hosts are brown forest ants ( Formica fusca ), red-cheeked ants ( Formica rufibarbis ), meadow ants ( Formica pratensis ) and other species [1] that eat lumps of mucus secreted through snails through the respiratory opening together with cercariae (settlement larvae). Most of the cercariae swallowed by the ant penetrate through the goiter wall into the body cavity and there, having lost their tail, are encysted, turning into metacercaria . However, one cercaria penetrates into the subpharyngeal ganglion of an ant. There, it forms a special thin-walled cyst, not capable of further development in the final host. As a result, the behavior of the ant changes. During the day, the ants behave normally, but at night they do not return to the anthill , climbing high on the stems of the grass and firmly holding the blade of grass with mandibles. Sheep and other ungulates ( cattle , goats , pigs , horses , donkeys ; as well as camels , hares , bears , dogs , foxes ) [2] , eating grass along with infected ants, become the final owners. Hepatic eggs caught with their excrement on the soil eat mollusks, closing the development cycle.
Hepatica mainly affects the liver and bile ducts of ungulates and other mammals, causing them dicroceliosis [3] [4] [5] .
Notes
- β The Merckt Veterinary Manual . Merck & Co., Inc. (2008). Date of treatment July 3, 2008. Archived on September 15, 2012.
- β Dicroceliosis
- β Dicrocoelium dendriticum is a bile duct fluke of ruminants such as sheep (link not available) . California University of Pennsylvania. Date of treatment January 9, 2009. Archived April 14, 2005.
- β Hepatic fluke (Fasciola hepatica)
- β Lanceolate fluke - Dicrosoelium dendriticum