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Redescription and surface ultrastructure of Pygidiopsis macrostomum (Digenea: Heterophyidae).
J Parasitol. 2005 Aug; 91(4):931-6.JP

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 and 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.

Authors+Show Affiliations

Laboratório de Avaliação e Promoção da Saúde Ambiental, Departamento de Biologia, Instituto Oswaldo Cruz, FIOCRUZ, Av. Brasil 4365, Rio de Janeiro 21040-900, Brazil.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

17089767

Citation

Simões, S B E., et al. "Redescription and Surface Ultrastructure of Pygidiopsis Macrostomum (Digenea: Heterophyidae)." The Journal of Parasitology, vol. 91, no. 4, 2005, pp. 931-6.
Simões SB, Barbosa HS, Santos CP. Redescription and surface ultrastructure of Pygidiopsis macrostomum (Digenea: Heterophyidae). J Parasitol. 2005;91(4):931-6.
Simões, S. B., Barbosa, H. S., & Santos, C. P. (2005). Redescription and surface ultrastructure of Pygidiopsis macrostomum (Digenea: Heterophyidae). The Journal of Parasitology, 91(4), 931-6.
Simões SB, Barbosa HS, Santos CP. Redescription and Surface Ultrastructure of Pygidiopsis Macrostomum (Digenea: Heterophyidae). J Parasitol. 2005;91(4):931-6. PubMed PMID: 17089767.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Redescription and surface ultrastructure of Pygidiopsis macrostomum (Digenea: Heterophyidae). AU - Simões,S B E, AU - Barbosa,H S, AU - Santos,C P, PY - 2006/11/9/pubmed PY - 2006/12/9/medline PY - 2006/11/9/entrez SP - 931 EP - 6 JF - The Journal of parasitology JO - J. Parasitol. VL - 91 IS - 4 N2 - 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 and 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. SN - 0022-3395 UR - https://www.unboundmedicine.com/medline/citation/17089767/Redescription_and_surface_ultrastructure_of_Pygidiopsis_macrostomum__Digenea:_Heterophyidae__ L2 - http://www.journalofparasitology.org/doi/10.1645/GE-417R.1?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -