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Systematic Parasitology

, Volume 57, Issue 3, pp 229–235 | Cite as

A new species of Pseudanisakis Layman & Borovkova, 1926 (Nematoda: Ascaridida) from Rioraja agassizii and Psammobatis extenta (Rajidae) in Brazilian southwestern Atlantic waters

  • Cláudia Portes Santos
  • Herman Lent
  • David I. Gibson
Article

Abstract

Pseudanisakis sulamericana n. sp. is described from the intestines of the rays Rioraja agassizii and Psammobatis extenta off the coast of Brazil. It can be readily differentiated from the three existing species of the genus. From P. tricupola Gibson, 1973, it differs in not having cupolas on the lips, having a dentigerous ridge of 90–95 denticles (vs 65–78) in a continuous subtriangular ring around the mouth, and in having an ejaculatory duct which is shorter than the spicules. From P. rajae (Yamaguti, 1941), it differs in having a single rather than a double row of denticles. It appears most similar to P. baylisi Gibson, 1973, but differs from it in having a smaller body-size (7.5–27 vs 16–46 mm), shorter spicules (1.14–1.90 vs 1.90–3.80 mm) and especially in having much more conspicuous denticles on the lips. The present record confirms the presence of the genus in subtropical waters.

Keywords

Atlantic Water Ejaculatory Duct Subtropical Water Present Record Short Spicule 
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.

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Copyright information

© Kluwer Academic Publishers 2004

Authors and Affiliations

  • Cláudia Portes Santos
    • 1
  • Herman Lent
    • 1
  • David I. Gibson
    • 2
  1. 1.Departamento de BiologiaInstituto Oswaldo CruzRio de Janeiro, RJBrazil
  2. 2.Department of ZoologyThe Natural History MuseumLondonUK

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