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

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Authors

KOUBKOVÁ Božena BARUŠ Vlastimil HODOVÁ Iveta VETEŠNÍKOVÁ ŠIMKOVÁ Andrea

Year of publication 2008
Type Article in Periodical
Magazine / Source Parasitology Research
MU Faculty or unit

Faculty of Science

Citation
Field Zoology
Keywords Nematoda-Labeonema-West African fish
Description 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 Nikolo Koba, Senegal. A nematode species Raillietnema synodontisi Vassiliades, 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, distribu- tion, 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.
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