This study reports on three species of Dactylogyrus Diesing, 1850 (Dactylogyridae) collected from tinfoil barb, Barbonymus schwanenfeldii (Bleeker) which were imported into South Africa as ornamental fish from Sri Lanka and Thailand. Supplementary morphometric characterisation and molecular data (partial 18S and 28S rDNA, and ITS1 region sequences) are presented for Dactylogyrus lampam (Lim & Furtado, 1986), Dactylogyrus tapienensis Chinabut & Lim, 1993 and Dactylogyrus viticulus Chinabut & Lim, 1993. Prevalence of Dactylogyrus spp. infection was 87% and 80% for fish from Sri Lanka and Thailand, respectively. Composition of the parasites between the fish of each origin differed. All three species were found to infect fish from Thailand, but only D. lampam was present on the fish received from Sri Lanka. Phylogenetic analysis revealed the position of studied species, with D. lampam clustering within the lineages of varicorhini-type species, while D. tapienensis and D. viticulus form a sister lineage to Dactylogyrus spp. associated with Cyprinus carpio L. and Carassius spp., species parasitising central African large cyprinids (Labeo Cuvier), and species parasitising African and Middle Eastern Carasobarbus spp.

TITLE: Dactylogyrus spp. (Dactylogyridae, Monogenea) de Barbonymus schwanenfeldii importé en Afrique du Sud : caractérisation morphométrique et moléculaire. ABSTRACT: Cette étude porte sur trois espèces de Dactylogyrus Diesing, 1850 (Dactylogyridae), prélevées sur des Barbonymus schwanenfeldii (Bleeker) qui ont été importés en Afrique du Sud comme poissons d’ornement depuis le Sri Lanka et la Thaïlande. Une caractérisation morphométrique et des données moléculaires supplémentaires (ADNr 18S et 28S partiels et séquences de la région ITS1) sont présentées pour Dactylogyrus lampam (Lim & Furtado, 1986), Dactylogyrus tapienensis Chinabut & Lim, 1993 et Dactylogyrus viticulus Chinabut & Lim, 1993. La prévalence de l’infection par les Dactylogyrus spp. était respectivement de 87 % et 80 % pour les poissons du Sri Lanka et de Thaïlande. La composition des parasites entre les poissons des deux origines différait. Les trois espèces infectaient les poissons de Thaïlande, mais seul D. lampam était présent sur les poissons du Sri Lanka. L’analyse phylogénétique a révélé la position des espèces étudiées, D. lampam se regroupant dans les lignées d’espèces de type varicorhini, tandis que D. tapienensis et D. viticulus forment une lignée sœur des Dactylogyrus spp. associés à Cyprinus carpio L. et Carassius spp., espèces parasitant les grands cyprinidés d’Afrique centrale (Labeo Cuvier), et espèces parasitant les Carasobarbus spp. d’Afrique et du Moyen-Orient.

Department of Botany and Zoology Faculty of Science Masaryk University 611 37 Brno Czech Republic Department of Zoology Faculty of Sciences Comenius University in Bratislava 841 04 Bratislava Slovakia

DSI NRF SARChI Chair Department of Biodiversity University of Limpopo Sovenga 0727 South Africa

DSI NRF SARChI Chair Department of Biodiversity University of Limpopo Sovenga 0727 South Africa Water Research Group Unit for Environmental Sciences and Development North West University Potchefstroom 2520 South Africa

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