Records of Macrogyrodactylus species (Monogenea: Gyrodactylidae) on the freshwater fishes in National park Niokolo Koba, Senegal

PŘIKRYLOVÁ, Iva and Milan GELNAR. Records of Macrogyrodactylus species (Monogenea: Gyrodactylidae) on the freshwater fishes in National park Niokolo Koba, Senegal. In 35th Annual Congress of the parasitological Society of Southern Africa. Windhoek, Namibie: Department of Biology, University of Namibia, 2006, p. 79-79.

Basic information

• Original name: Records of Macrogyrodactylus species (Monogenea: Gyrodactylidae) on the freshwater fishes in National park Niokolo Koba, Senegal
• Name in Czech: Výskyt druhů rodu Macrogyrodactylus na sladkovodních rybách v Národním parku Niokolo Koba, Senegal
• Authors: PŘIKRYLOVÁ, Iva and Milan GELNAR.
• Edition: Windhoek, Namibie, 35th Annual Congress of the parasitological Society of Southern Africa, p. 79-79, 1 pp. 2006.
• Publisher: Department of Biology, University of Namibia

Other information

• Original language: English
• Type of outcome: Proceedings paper
• Field of Study: 10600 1.6 Biological sciences
• Country of publisher: Namibia
• Confidentiality degree: is not subject to a state or trade secret
• Organization unit: Faculty of Science
• Keywords in English: monogenea, Macrogyrodactylus, polypterus senegalus, Clarias anguillaris
• Tags: International impact

Abstract

During the parasitological investigations of african freshwater fishes in National park Nikolo Koba, Senegal, West Africa, altogether 5 species of viviparous monogeneans belonging to genus Macrogydactylus being found on the gills, fins and body surface of two species of host fish Clarias anguillaris and Polypterus senegalus (Clariidae and Polypteridae). The haptoral sclerites of specimens of the genus Macrogyrodactylus (fixed in mixture of glycerine and ammonium-picrate) were compared to the all described macrogyrodactylus species. On Clarias anguillaris, Macrogyrodactylus congolensis and Macrogyrodactylus karibae were found. In the case of Polypterus senegalus, the presence of three macrogyrodactylus species was recorded. One species have been recognized as Macrogyrodactylus polypteri and another two have been identified as Macrogyrodactylus sp.1 and Macrogyrodactylus sp.2. As a result of detail mopho-metrical analysis of structures of taxonomical importace, Macrogyrodactylus sp. 1 and Macrogyrodactylus sp. 2 can be recognized like a smallest ones in relation to all macrogyrodactylid species described till now. Macrogyrodactylus sp. 1 can be discriminated from Macrogyrodactylus sp. 2 almost exclusively by the shape of its hamuli and its ventral bar. At Macrogyrodactylus sp.1 the shape of marginal hooks on anterolateral lobes differs significantly from the shape of marginal hooks placed along posterior margin of the haptor. This finding provide good basis for decsription of two new species of genus Macrogyrodactylus. Moreover, occurence of five macrogyrodactylids species parasitic two species of fish living in National park Nikolo Koba represent also first record of this monogenean parasites in Senegal.

Abstract (in Czech)

Parazitologický výzkum v Národním parku Niokolo Koba odhalil přítomnost parazitických monogenei rodu Macrogyrodactylus na hostitelich Polypterus senegalus a Clarias anguillaris. Jedná se o prvni zaznam těchto parazitů na územi Senegalu.