Procamallanus ( Procamallanus ) spp. (Nematoda: Camallanidae) in fishes of the Okavango River, Botswana, including the description of P . ( P .) pseudolaeviconchus n. sp. parasitic in Clarias spp. (Clariidae) from Botswana and Egypt

作者: František Moravec , Liesl L. Van As

DOI: 10.1007/S11230-014-9541-0

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摘要: Parasitological dissections of fishes from the Okavango River, Botswana, revealed presence nematodes subgenus Procamallanus (Procamallanus) Baylis, 1923 in five fish species belonging to three different families. Based on light and scanning electron microscopical examinations, they proved represent one previously known new species, i.e. P. (P.) laeviconchus (Wedl, 1861) Synodontis nigromaculatus Boulenger, S. thamalakanensis Fowler (new host) (both Mochokidae) Schilbe intermedius Ruppel (Schilbeidae), pseudolaeviconchus n. sp. Clarias stappersi Boulenger C. theodorae Weber Clariidae). Specimens collected gariepinus (Burchell) (type-host) Egypt were also examined. Both these nematode are very similar, differing each other mainly shape circumoral flange, which is conspicuously lobed unlobed pseudolaeviconchus. Previously, two have been confused literature under name laeviconchus. A key spp. parasitising freshwater Africa, including Madagascar, provided.

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