Four new species of Dactylogyrus Diesing, 1850 (Monogenea: Dactylogyridae) parasitising the gills of northern Moroccan Luciobarbus Heckel (Cyprinidae): morphological and molecular characterisation
Four new species of Dactylogyrus Diesing, 1850 are described from the gills of three species of Luciobarbus Heckel collected from various hydrographical basins in northern Morocco: Dactylogyrus scorpius n. sp. from Luciobarbus rifensis Doadrio, Casal-Lopez & Yahyaoui; D. benhoussai n. sp. from L. moulouyensis Pellegrin; and D. varius n. sp. and D. falsiphallus n. sp. from L. maghrebensis Doadrio, Perea & Yahyaoui. The descriptions of the new species are confirmed by molecular data (partial 18S rDNA, ITS1, and partial 28S rDNA sequences). All four species belong to the group of Dactylogyrus species, possessing a cross-shaped ventral bar and a male copulatory organ composed of a loosely coiled copulatory tube and an accessory piece with a capsule-like base and recurved distal portion. Given the high shape variability of the haptoral anchors reported among specimens of D. varius n. sp., three morphological forms within this species (D. varius f. vulgaris, D. varius f. magnus, and D. varius f. dromedarius) are recognised. However, specimens belonging to D. benhoussai n. sp. and D. varius f. vulgaris were morphologically very similar and were discriminated with certainty, only when using molecular data.
KeywordsCopulatory Tube Male Copulatory Organ Zoological Nomenclature Accessory Piece Haptoral Sclerite
We are especially indebted to Jasna Vukić, Charles University of Prague, for providing identifications of fish hosts. Thanks are also due to Maria Lujza Kičinjaová and Tomáš Pakosta, Masaryk University in Brno, and Abdelaziz Benhoussa, Mohamed V University of Rabat, for their assistance during field collections. We would like to thank Jean-Lou Justine, Muséum National d’Histoire Naturelle, Paris, France, for his effort in trying to locate the type-specimens of Dactylogyrus spp. described from Moroccan cyprinids. Big thanks to Ondřej Hájek, Masaryk University in Brno, for making the map with the sampling sites.
This study was funded by the Czech Science Foundation, project N. 15-19382S.
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
All applicable institutional, national and international guidelines for the care and use of animals were followed.
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