Parasitology Research

, Volume 106, Issue 5, pp 1117–1126 | Cite as

Redescription of Syphacia venteli Travassos 1937 (Nematoda: Oxyuridae) from Nectomys squamipes in Argentina and Brazil and description of a new species of Syphacia from Melanomys caliginosus in Colombia

  • María del Rosario RoblesEmail author
  • Graciela Teresa Navone
Original Paper


Syphacia venteli Travassos, Mem Inst Oswaldo Cruz 32:607–613, 1937 is redescribed on the basis of specimens recovered from the type host, Nectomys squamipes (Brants 1827), from Brazil and Argentina. Specimens determined by Quentin (Bull Mus Natl Hist Nat 2:909–925, 1969) as S. venteli from Melanomys caliginosus (Tomes 1860) in Colombia were re-studied and assigned to a new species. In both species, structures such as the shape of the cephalic plate, details and distribution of the submedian papillae and amphids, presence and absence of the lateral and cervical alae, and shape and structure of the accessory hook of the gubernaculum were studied with the light microscope and scanning electron microscope. The present survey is the first detailed study of the species S. venteli since the original description, and the first record of this species from Argentina. Moreover, the present study suggests that the validity of some host species of Syphacia should be questioned and that through of the study of deposited specimens, a more exact number of parasitized host species can be confirmed, contributing to a better understanding of host specificity in this genus.


Dick Type Host Spicule Length Murid Rodent High Host Specificity 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



We offer thanks to Ulyses Pardiñas, Carlos Galliari, Dario Podestá, Sebastián Cirignoli, and Juliana Notarnicola for collecting hosts from Valle del Arroyo Cuña Pirú; to Agustín Abba for collecting hosts from Puerto Península; to Ulyses Pardiñas (from Centro Nacional Patagónico, CENPAT) for the identification of the hosts from Valle del Arroyo Cuña Pirú; to Carlos Galliari, Mariano Merino and Agustín Abba for the identification of the hosts from Puerto Península; to curators Odile Bain and Marcelo Knoff for the loan of the material deposited in helminthological collection of MNHN and CHIOC; to Mike Kinsella for the critical reading of the manuscript and for the detailed revision to English; to Ulyses Pardiñas for his suggestions; to María Cristina Estivariz for the drawings; and to Patricia Sarmiento for the SEM photographs. This study was funded by Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). MRR and GTN are members of CONICET.


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Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  • María del Rosario Robles
    • 1
    Email author
  • Graciela Teresa Navone
    • 1
  1. 1.Centro de Estudios Parasitológicos y de Vectores CEPAVE (CCT-CONICET-La Plata), UNLPLa PlataArgentina

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