Changes

The slime balls are then ingested by the '''ant''', along with the developing larvae, known as '''cercariae'''.  In the ant they mature into '''metacercariae'''.  The presence of metacercariae in the nerve ganglia of the ants makes them revert to a primitive behaviour pattern, whereby they cling onto herbage overnight instead of retreating to the nest enhancing the likelihood of being eaten by grazing animals

The slime balls are then ingested by the '''ant''', along with the developing larvae, known as '''cercariae'''.  In the ant they mature into '''metacercariae'''.  The presence of metacercariae in the nerve ganglia of the ants makes them revert to a primitive behaviour pattern, whereby they cling onto herbage overnight instead of retreating to the nest enhancing the likelihood of being eaten by grazing animals

Infection of the definitve host is via ingestion of ants, mainly on the pasture.  The metacercariae moult into immature flukes and migrate directly up the bile duct into the liver.

Infection of the definitive host is via ingestion of ants, mainly on the pasture.  The metacercariae moult into immature flukes and migrate directly up the bile duct into the liver.