Thorny-headed worms

Immature Polyacanthorhynchus rhopalorhynchus (Acanthocephala: Polyacanthorhynchidae) in Venton, Hoplias malabaricus (Pisces) from Moca Vie River, Bolivia, with notes on its apical organ and histopathology

Publication Type:Journal Article
Year of Publication:1996
Authors:O. M. Amin, Heckmann, R. A., Inchausty, V., Vasquez, R.
Journal:Comparative ParasitologyComp. Parasitol.
Pagination:115 - 119
Date Published:1996///
ISBN Number:1049233X (ISSN)
Keywords:Acanthocephala, Apical organ, Bolivia, Cystacanths, histopathology, Hoplias malabaricus, Paratenic host, Polyacanthorhynchus rhopalorhynchus

Cystacanths of Polyacanthorhynchus rhopalorhynchus (Diesing, 1851) Travassos, 1920 were discovered in the viscera of venton, Hoplias malabaricus (Bloch, 1794) collected from the Moca Vie River at Las Palquitas, Bolivia. Apical proboscis organ and general morphological features were similar to but less developed than those of Polyacanthorhynchus kenyensis Schmidt and Canaris, 1967 cystacanths from Africa. Cystacanths of P. rhopalorhynchus were not deeply embedded in liver tissue. A collagenous connective tissue capsule surrounded and attached the cystacanths to the liver surface. Necrosis of hepatocytes and subsequent inflammatory response were observed near encapsulated acanthocephalans. Cystacanths attached to the intestine were encapsulated in the fibroserosa.

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith