Location and means of attachment of Bothriocephalus scorpii (Mnller) (Cesroda : Pseudophyllidea) in red cod, Pseudophycis bacchus (Forster in Bloch & Schneider), from New Zealand waters

Abstract

A linear relationship was found between the length of B. scorpii and place of attachment within the gut of P. Bacchus taken from Otago Harbour and adjacent Blueskin Bay, N.Z. The scolex was found to penetrate the gut wall, evoking a marked response by the host. The secretory activity of a layer of vesicles in the outer distal parenchyma of the scolex is possibly responsible for scolex penetration. The overall infestation rate of the 334 red cod taken was 33%.