Translator Disclaimer
1 August 2005 REDESCRIPTION AND SURFACE ULTRASTRUCTURE OF PYGIDIOPSIS MACROSTOMUM (DIGENEA: HETEROPHYIDAE)
Author Affiliations +
Abstract
Pygidiopsis macrostomum Travassos, 1928, a poorly known species originally described from a single specimen from Rattus norvegicus (Erxleben, 1777) in Brazil, is redescribed on the basis of metacercariae from the mesenteries of naturally infected guppies Poecilia vivipara Bloch & Schneider, 1801 (Poeciliidae), and adults obtained from an experimental infection of hamsters. Pygidiopsis macrostomum is characterized by the absence of oral spines, vitellaria extending forward to ventral sucker, uterus reaching pharyngeal level, X-shaped excretory vesicle, and an oral sucker/acetabulum ratio of 1:0.8. The surface ultrastructure shows that the tegument of the metacercaria does not strongly differ from that of adults. The brush-shaped spines of P. macrostomum are similar to those reported for Pygidiopsis summa and Pygidiopsis ardeae, but no differences in spine shape were observed throughout the body.
S. B E. Simões, H. S. Barbosa and C. P. Santos "REDESCRIPTION AND SURFACE ULTRASTRUCTURE OF PYGIDIOPSIS MACROSTOMUM (DIGENEA: HETEROPHYIDAE)," Journal of Parasitology 91(4), (1 August 2005). https://doi.org/10.1645/GE-417R.1
Received: 21 September 2004; Accepted: 1 December 2004; Published: 1 August 2005
JOURNAL ARTICLE
6 PAGES


SHARE
ARTICLE IMPACT
RIGHTS & PERMISSIONS
Get copyright permission
Back to Top