Parasitology Research

, Volume 102, Issue 5, pp 1013–1020 | Cite as

Morphometric and molecular characteristics of Labeonema synodontisi n. comb. (Nematoda: Atractidae) from the West African fishes

  • Božena KoubkováEmail author
  • Vlastimil Baruš
  • Iveta Hodová
  • Andrea Šimková
Original Paper


Numerous nematodes were found in the rectum of three fish species Synodontis ocellifer, S. nigrita, and S. schall (Mochokidae, Siluriformes) from the Gambia River and Mare Simenti, National Park Niokolo Koba, Senegal. A nematode species Raillietnema synodontisi Vassiliadès, 1973 (host S. ocellifer), is redescribed using morphometric (including scanning electron microscopy) and molecular characteristics and transferred into the genus Labeonema Puylaert, 1970. It is morphologically and metrically similar to Labeonema intermedium Puylaert, 1970, the other congeneric species (L. bainae Baker, 1982; L. bakeri Van Waerebeke, Chabaud, Bain et Georges, 1988; and L. africanum Moravec et Van As, 2004) differ from them either by the spicule and gubernaculum lengths, distribution and number of pre-cloacal papillae, position of the vulva, as well as hosts and geographical distribution. The partial sequences of small ribosomal subunit rDNA of L. synodontisi were analyzed and compared with other nematode sequences. Molecular analyses seem to support the position of this nematode species based on the morphological observation.


Nematode Species Anterior Extremity Cephalic Papilla Genital Papilla Digital Image Analysis System 
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.



The authors thank the management of the Senegal National Parks for logistic support and the guide Amadou Demba Ndiaye for assistance. They would also like to thank Martina Vyskočilová, from the Department of Botany and Zoology, Faculty of Science MU, Brno, Czech Republic for DNA analysis. Thanks are also due to Mr. Jimmy Cassone, Chargé des collections d'Helminthes Muséum National d'Histoire Naturelle, Paris for the loan of the type specimens of R. synodontisi Vassiliadès, 1973.

This study was partly supported by grant No. IAA6093404 (B.K., V.B., A.S.) from the Grant Agency of the Academy of Science of the Czech Republic and by the Research Project of the Masaryk University No. MSM 0021622416 and Ichthyoparasitology Research Centre of the Ministry of Education, Youth and Sports of the Czech Republic (LC 522) (B.K., I.H., A.S.).


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Copyright information

© Springer-Verlag 2008

Authors and Affiliations

  • Božena Koubková
    • 1
    Email author
  • Vlastimil Baruš
    • 2
  • Iveta Hodová
    • 1
  • Andrea Šimková
    • 1
  1. 1.Department of Botany and Zoology, Faculty of ScienceMasaryk UniversityBrnoCzech Republic
  2. 2.Institute of Vertebrate BiologyAcademy of Sciences of the Czech RepublicBrnoCzech Republic

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