| chaetotaxy of the monogeneans macrogyrodactylus clarii and m. congolensis from the gills and skin of the catfish clarias gariepinus in egypt, with a note on argentophilic elements in the nervous system. | a comparison has been made between the chaetotaxy of the gyrodactylid monogeneans macrogyrodactylus clarii gussev, 1961 and m. congolensis (prudhoe, 1957) yamaguti, 1963 from the gills and skin, respectively, of the catfish clarias gariepinus (burchell) from the river nile in egypt. bilaterally arranged argentophilic structures on the surface of these parasites are presumed to be sensilla and are more abundant in m. clarii than in m. congolensis especially on the ventral surface (124 vs. 66). in ... | 2001 | 11699655 |
| neuromusculature of macrogyrodactylus clarii, a monogenean gill parasite of the nile catfish clarias gariepinus in egypt. | phalloidin fluorescence technique, enzyme cytochemistry and immunocytochemistry in conjunction with confocal scanning laser microscopy have been used for the first time to describe the nervous and muscle systems of the viviparous monogenean gill parasite, macrogyrodactylus clarii. the gross spatial arrangement of muscle and associated cholinergic, peptidergic and aminergic innervations has been examined. the central nervous system (cns) consists of paired cerebral ganglia from which emanate thre ... | 2004 | 15322920 |
| neuromusculature of macrogyrodactylus congolensis, a monogenean skin parasite of the nile catfish clarias gariepinus. | phalloidin fluorescence technique, enzyme cytochemistry and immunocytochemistry, in conjunction with confocal scanning laser microscopy, were used to describe the neuromusculature of the monogenean skin parasite macrogyrodactylus congolensis from the nile catfish clarias gariepinus. the body wall muscles are composed of an outer layer of compactly arranged circular fibres, an intermediate layer of paired longitudinal fibres and an inner layer of well-spaced bands of diagonal fibres arranged in t ... | 2007 | 16896654 |
| ultrastructural observations on the elusive subtegumental cells of the viviparous gill monogenean, macrogyrodactylus clarii. | the ultrastructure of the tegument, including putative subtegumental cells, of the monogenean gill parasite macrogyrodactylus clarii is described for the first time. the lateral cells are secretory in nature and can be classified into four types: t1 producing elongated, electron-dense, bodies (t1); t2 manufacturing electron-lucent vesicles (t2); t3 producing thin, dump-bell shaped, electron-dense bodies (t3); and t4 containing lyzosome-like inclusions. morphologically, the t2 cells resemble thos ... | 2007 | 17265090 |
| neuromusculature of gyrodactylus rysavyi, a monogenean gill and skin parasite of the catfish clarias gariepinus. | phalloidin fluorescence technique, enzyme cytochemistry and immunocytochemistry in conjunction with confocal scanning laser microscopy were used for the first time to describe the nervous and muscle systems of the viviparous monogenean parasite, gyrodactylus rysavyi inhabiting the gills and skin of the nile catfish clarias gariepinus. the body wall muscles are composed of an outer layer of circular fibres, an intermediate layer of paired longitudinal fibres and an inner layer of well-spaced band ... | 2007 | 17662646 |
| first report of monogenean flatworms from lake tana, ethiopia: gill parasites of the commercially important clarias gariepinus (teleostei: clariidae) and oreochromis niloticus tana (teleostei: cichlidae). | lake tana is the largest lake in ethiopia and the source of the blue nile. the lake harbours unique endemic cyprinid fish species, as well as the commercially important endemic nile tilapia subspecies oreochromis niloticus tana and the north african catfish clarias gariepinus. its endemicity, especially within the labeobarbus radiation, its conservation importance and its economic indispensability attract scientific interest to the lake's ichthyofauna. fish parasites of lake tana, however, are h ... | 2016 | 27457488 |
| scanning and transmission electron microscopy of the histopathological impact of macrogyrodactylus clarii (monogenea: gyrodactylidae) on the gills of catfish, clarias gariepinus. | scanning and transmission electron microscopy (tem) were used to study the histopathological effects of the monogenean macrogyrodactylus clarii gussev, 1961 on the gills of the catfish clarias gariepinus (burchell). suction generated during attachment created 'footprints' on host surfaces in which the host tissues were elevated above the general gill surface. 'footprints' were bordered by four clefts caused by the muscular flaps on the anterior, lateral and posterior margins of the haptor. the h ... | 2016 | 27311695 |
| histochemical demonstration of five enzymes' activities in macrogyrodactylus clarii (monogenea: gyrodactylidae) from the catfish clarias gariepinus. | histochemical techniques were applied to whole mounts, to study the distribution of the enzymes alkaline phosphatase, acid phosphatase, adenosine triphosphatase, 5'-nucleotidase and glucose-6-phosphatase in the organs and tissues of a viviparous monogenean, macrogyrodactylus clarii gussev, 1961, from the gills of the north african catfish clarias gariepinus (burchell) in egypt. the following organs and tissues were studied: head region, anterior adhesive glands, mouth region, pharynx, intestine, ... | 2012 | 22439427 |