Metacercariae

Some articles on metacercariae:

Metagonimiasis - Metagonimus Yokogawai - Life Cycle
... scale of a fresh or brackish water fish and encyst as metacercariae in the tissue ... becomes infected by consuming undercooked, raw, or pickled fish containing the infectious metacercariae ... The metacercariae then excyst in the small intestine of the host (human, mammal or bird), and develop into adults ...
Paragonimiasis - Life Cycle
... intermediate host, a crustacean such as a crab or crayfish, where they encyst and become metacercariae ... cooked or pickled crab or crayfish that harbor metacercariae of the parasite ... The metacercariae excyst in the duodenum, penetrate through the intestinal wall into the peritoneal cavity, then through the abdominal wall and diaphragm into the lungs, where they become encapsulated ...
Fasciolosis - Clinical Signs - In Animals
... associated with infectious dose (amount of ingested metacercariae) ... Acute Type I Fasciolosis infectious dose is more than 5000 ingested metacercariae ... Acute Type II Fasciolosis infectious dose is 1000-5000 ingested metacercariae ...
Microphallus Piriformes - Ecology
... they directly develop into encysted metacercariae in the snail ... tide, and thus the periwinkles carrying mature metacercariae are left a considerable distance above water when the tide recedes ... Once the snails are eaten by Herring Gulls, the metacercariae hatch into mature flukes ...
Fasciola Hepatica - Life Cycle
... cercariae emerge and swim through pools of water in pasture, and encyst as metacercariae on near-by vegetation ... From here, the metacercariae are ingested by the ruminant, or in some cases, by humans eating uncooked foods such as watercress ... In the duodenum, the parasite breaks free of the metacercariae and burrows through the intestinal lining into the peritoneal cavity ...