Systematic Parasitology

, Volume 51, Issue 2, pp 149–153

Steganoderma (Steganoderma) valchetensis n. sp. (Digenea: Zoogonidae) from the relict fish Gymnocharacinus bergi (Osteichthyes: Characidae) in Argentina

  • Jorge A. Etchegoin
  • Florencia Cremonte
  • Alicia H. Escalante
Article

DOI: 10.1023/A:1014098732668

Cite this article as:
Etchegoin, J.A., Cremonte, F. & Escalante, A.H. Syst Parasitol (2002) 51: 149. doi:10.1023/A:1014098732668

Abstract

A new species of Steganoderma (Steganoderma) (Digenea: Zoogonidae) was found in the digestive tract of the southernmost, endemic and scale-less characid, Gymnocharacinus bergi, inhabiting thermal headwaters of the Valcheta Creek in northern Patagonia, Argentina. Steganoderma valchetensis n. sp. is included in the subgenus Steganoderma because of having a sessile ventral sucker and caeca reaching to the testes. This new species can be distinguished from other species of this genus on the basis of body-length, sucker-ratio, the length of the cirrus-sac, the morphology of the seminal vesicle and gonads, and the location of the vitelline follicles and genital pore. The taxonomic status of the species of Steganoderma, parasitising the freshwater fishes of Patagonia, in southern Argentina, and Chile, is also discussed.

Copyright information

© Kluwer Academic Publishers 2002

Authors and Affiliations

  • Jorge A. Etchegoin
    • 1
  • Florencia Cremonte
    • 2
  • Alicia H. Escalante
    • 3
  1. 1.Laboratorio de Parasitología, Facultad de Ciencias Exactas y NaturalesUniversidad Nacional de Mar del PlataMar del PlataArgentina
  2. 2.Centro de Estudios Parasitológicos y de Vectores (CONICET- UNLP)La PlataArgentina
  3. 3.Laboratorio de Limnología, Facultad de Ciencias Exactas y NaturalesUniversidad Nacional de Mar del PlataMar del PlataArgentina

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