|Publication Type:||Journal Article|
|Year of Publication:||1996|
|Authors:||O. M. Amin, Heckmann, R. A., Inchausty, V., Vasquez, R.|
|Journal:||Journal of the Helminthological Society of WashingtonJ. Helminthol. Soc. Wash.|
|Pagination:||115 - 119|
|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 malabarions (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.