The mode of infection of the Hake, Merluccius merluccius (L.) by the trematode Bucephalopsis gracilescens (Rud.)



  • 1 Dissection of Hake, Merluccis merluccius, has shown that the encysted metacercariae of Bucephalopsis are distributed on the brain and cranial nerves in the head region, and on the spinal nerves in the tail region.
  • 2 In the head region the nerves on which the cysts occur are those supplying the lateral line system.
  • 3 It is shown that in the tail region there is a path, via the lateral line canal, to the spinal nerves.
  • 4 It is concluded that the Hake is infected by the cercariae entering the lateral line canals.