Issue |
Parasite
Volume 26, 2019
|
|
---|---|---|
Article Number | 45 | |
Number of page(s) | 9 | |
DOI | https://doi.org/10.1051/parasite/2019044 | |
Published online | 25 July 2019 |
urn:lsid:zoobank.org:pub:FC92E481-4FF7-4DD8-B7C9-9F192F373D2E
Research Article
Three new species of Synodontella (Monogenea, Ancyrocephalidae), gill parasites of Synodontis spp. (Siluriformes, Mochokidae) from Côte d’Ivoire
Trois nouvelles espèces de Synodontella (Monogenea, Ancyrocephalidae), parasites branchiaux de Synodontis spp. (Siluriformes, Mochokidae) en Côte d’Ivoire
1
Laboratory of Hydrobiology, UFR Biosciences, Felix Houphouët Boigny University, 22 BP 582 Abidjan 22, Côte d’Ivoire
2
ISEM, Univ. Montpellier, CNRS, IRD, CC 065, Place Eugène Bataillon, 34095 Montpellier Cedex 5, France
3
Laboratory “Biodiversity, Ecology and Genome”, Research Center “Plant and Microbial Biotechnology, Biodiversity and Environment”, Mohammed V University in Rabat, Faculty of Sciences, 4 avenue Ibn Batouta, B.P. 1014, Rabat, Morocco
* Corresponding author: antoine.pariselle@ird.fr
Received:
5
April
2019
Accepted:
7
July
2019
Four species of Synodontella, including three new, are reported from three species of Synodontis (S. ocellifer, S. nigrita, and S. velifer) from north-western Côte d’Ivoire. Synodontella melanoptera Dossou & Euzet, 1993 was found on the gills of S. nigrita and S. velifer and was already known from the gills of S. melanopterus in Benin and the gills of S. obesus and S. rebeli in Cameroon. The new species are Synodontella speroadotevii n. sp. from S. nigrita (type-host), S. velifer and S. ocellifer, and Synodontella bagoueensis n. sp. and Synodontella akengboi n. sp., both from S. velifer (type-host for both), S. nigrita and S. ocellifer. The new species differ from the other species of Synodontella mainly in the morphology of their male copulatory organs (MCO): Synodontella speroadotevii has a two-part penis (one being a hollow tube and the other a flattened tube); Synodontella bagoueensis has a wide G-shaped penis with a sub-terminal opening; and Synodontella akengboi has a simple narrow J-shaped penis. Synodontella speroadotevii differs from Synodontella bagoueensis and Synodontella akengboi in the shape of the dorsal transverse bar, which shows no protuberance, and also in the morphology of the MCO. Synodontella bagoueensis differs from the other two species in that it has a dorsal transverse bar that is V-shaped and a G-shaped MCO. Synodontella akengboi differs from the two other species in having a J-shaped MCO and in the size of its ventral and dorsal anchors which, contrary to the other two species, are almost similar.
Résumé
Quatre espèces de Synodontella, dont trois nouvelles, sont signalées chez trois espèces de Synodontis (S. ocellifer, S. nigrita et S. velifer) du nord-ouest de la Côte d’Ivoire. Synodontella melanoptera Dossou & Euzet, 1993 a été trouvé sur les branchies de S. nigrita et S. velifer et était déjà connu des branchies de S. melanopterus au Bénin et des branchies de S. obesus et S. rebeli au Cameroun. Les nouvelles espèces sont Synodontella speroadotevii n. sp. de S. nigrita (hôte type), S. velifer et S. ocellifer et Synodontella bagoueensis n. sp. et Synodontella akengboi n. sp., tous deux de S. velifer (hôte type pour les deux), S. nigrita et S. ocellifer. Les nouvelles espèces se distinguent des autres espèces de Synodontella principalement par la morphologie de leurs organes copulateurs mâles (OCM) : Synodontella speroadotevii a un pénis en deux parties (l’une étant un tube creux et l’autre un tube aplati) ; Synodontella bagoueensis a un large pénis en forme de G avec une ouverture subterminale ; et Sy. akengboi a un pénis simple et étroit en forme de J. Synodontella speroadotevii diffère de Sy. bagoueensis et Sy. akengboi par la forme de la barre transversale dorsale, qui ne montre aucune protubérance, ainsi que dans la morphologie de l’OCM. Synodontella bagoueensis se distingue des deux autres espèces par sa barre transversale dorsale en forme de V et un OCM en forme de G. Synodontella akengboi diffère des deux autres espèces par son OCM en forme de J et par la taille de ses crochets ventraux et dorsaux qui, contrairement aux deux autres espèces, sont presque similaires.
Key words: Siluriformes / Mochokidae / Synodontis / Monogenean / Synodontella / Gill
© E. Bouah et al., published by EDP Sciences, 2019
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