Publication details
Monogenea sladkovodních akvarijních ryb v České republice - současný stav a perspektivy
| Title in English | Monogeneans of freshwater aquarium fishes in the Czech Republic - current state and prospects |
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| Authors | |
| Year of publication | 2006 |
| Type | Article in Proceedings |
| Conference | IX. Česká ichtyologická konference |
| MU Faculty or unit | |
| Citation | |
| Field | Zoology |
| Keywords | Monogenea; freshwater fish; aquarium fish; Archidiplectanum; Dactylogyrus; Diaphorocleidus; Gussevia; Gyrodactylus; Heteronchocleidus; Macrogyrodactylus; Mastacembelocleidus; Notopterodiscoides; Quadriacanthus; Sciadicleithrum; Thaparocleidus; Thylacicleidus; Trianchoratus; Urocleidoides; Czech Republic |
| Description | A total of 60 species of freshwater aquarium fish in the Czech Republic were examined for metazoan parasites during 2000–2004. The majority of the fishes were imported from tropical regions, mainly from Southeast Asian farms. The survey revealed the presence of 40 species of helminth parasites on/in 33 species of aquarium fishes. The helminth fauna found was composed predominantly of the members of the Monogenea (33 species) represented by 16 genera: Archidiplectanum, Dactylogyrus, Diaphorocleidus, Gussevia, Gyrodactylus, Heteronchocleidus, Macrogyrodactylus, Mastacembelocleidus, Notopterodiscoides, Quadriacanthus, Sciadicleithrum, Thaparocleidus, Thylacicleidus, Trianchoratus, Urocleidoides and Dactylogyridae gen. sp. Dactylogyridae was the most diverse family with 28 species, followed by Gyrodactylidae with 4 species and Diplectanidae with 1 species. The largest number of monogenean species belonged to Dactylogyrus (9 species), Thylacicleidus (4 species), Gyrodactylus (3 species), Urocleidoides (3 species), Thaparocleidus (2 species) and Trianchoratus (2 species). Five monogenean species were described as new to science: Dactylogyrus coartatus, Dactylogyrus macrocolpius and Dactylogyrus melanopteri from the gills of the bala sharkminnow (Balantiocheilos melanopterus), Thylacicleidus brunensis from the gills of the figure-eight puffer (Tetraodon biocellatus) and T. latus from the gills of the spotted green puffer (T. nigroviridis). The majority of the monogenean species found were situated on the gills, the only monogeneans recorded from the skin and fins were Gyrodactylus bullatarudis from Poecilia reticulata, Gyrodactylus rasini from Xiphophorus helleri and X. maculatus, Gyrodactylus sp. from Pantodon buchholzi, Macrogyrodactylus polypteri from Erpetoichthys calabaricus and post-larval stages of Thylacicleidus spp from Tetraodon nigroviridis. Nine species of the examined aquarium fish represent new hosts for the following monogenean species: siamese fighting fish (Betta splendens) for Heteronchocleidus buschkieli, reedfish (Erpetoichthys calabaricus) for Macrogyrodactylus polypteri, flame tetra (Hyphessobrycon flammeus) for Diaphorocleidus armillatus, peacock eel (Macrognathus siamensis) and spiney eel (M. circumcinctus) for Mastacembelocleidus bam, blue discus (Symphysodon aequifasciatus) for Sciadicleithrum variabilum, thick lipped gourami (Trichogaster labiosus) for Trianchoratus acleithrium, threestripe gourami (Trichopsis schalleri) for Heteronchocleidus buschkieli, and southern platyfish (Xiphophorus maculatus) for Urocleidoides vaginoclaustrum. The most heavily infested fish (prevalence = 100 %; intensity > 100 specimens/fish) were the black tetra (Gymnocorymbus ternetzi) infested with Diaphorocleidus armillatus, reedfish (E. calabaricus) with Macrogyrodactylus polypteri, sutchi catfish (Pangasius hypophthalmus ) with Thaparocleidus siamensis, figure-eight puffer (T. biocellatus) with Thylacicleidus brunensis, spotted green puffer (T. nigroviridis) with T. latus, and barred sorubim (Pseudoplatystoma fasciatum) with Dactylogyridae gen. sp. As follows from the above results, current imports of the fish from tropical regions represent a dangerous source of parasitic helminths and, in particular, monogeneans. It is therefore necessary to enhance the knowledge concerning the spread of these parasites in the areas where their hosts naturally occur and to apply such knowledge in quarantining the fish imported for aquaristic purposes. This study was supported by the Research Project of the Masaryk University (MSM 0021622416) and the Ichthyoparasitology Research Centre of the Ministry of Education, Youth and Sports of the Czech Republic (LC 522). |
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