EFFECTS OF THE PLEROCERCOID LARVA OF A PSEUDOPHYLLIDEAN CESTODE, LIGULA INTESTINALIS, ON THE PITUITARY GLAND AND GONADS OF ITS HOST

Abstract

1. Infections with the plerocercoid larvae of a pseudophyllidean cestode, Ligula intestinalis, are shown to be associated with histological changes in the pituitary gland and gonads of its host. 2. The results of experimental infections in Rutilus rutilus and Xenopus laevis are similar to those which follow testosterone implantation. It is suggested that the parasite produces an anti-gonadotrophic substance.