title: 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.
abstract: Parasitological dissections of fishes from the Okavango River, Botswana, revealed the presence of nematodes of the subgenus Procamallanus (Procamallanus) Baylis, 1923 in five fish species belonging to three different families. Based on light and scanning electron microscopical examinations, they proved to represent one previously known and one new species, i.e. P. (P.) laeviconchus (Wedl, 1861) from Synodontis nigromaculatus Boulenger, S. thamalakanensis Fowler (new host) (both Mochokidae) and Schilbe intermedius Rüppel (new host) (Schilbeidae), and P. (P.) pseudolaeviconchus n. sp. from Clarias stappersi Boulenger and C. theodorae Weber (both Clariidae). Specimens of the new species previously collected from Clarias gariepinus (Burchell) (type-host) in Egypt were also examined. Both of these nematode species are very similar, differing from each other mainly in the shape of the circumoral flange, which is conspicuously lobed in P. laeviconchus and unlobed in P. pseudolaeviconchus. Previously, these two species have been confused in the literature under the name P. laeviconchus. A key to Procamallanus (Procamallanus) spp. parasitising freshwater fishes in Africa, including Madagascar, is provided.
authors: Institute of Parasitology, Biology Centre of the Academy of Sciences of the Czech Republic, Branišovská 31, 370 05, České Budějovice, Czech Republic, moravec@paru.cas.cz.
authors: František
authors: F
authors: Moravec
authors: Liesl L
authors: LL
authors: Van As
mesh_terms: D000818:Animals; D001902:Botswana; D004534:Egypt; D005260:Female; D005399:Fishes / Q000469:parasitology*; D008297:Male; D008855:Microscopy, Electron, Scanning; D009348:Nematoda / Q000145:classification* / Q000502:physiology* / Q000648:ultrastructure; D045483:Rivers / Q000469:parasitology; D013045:Species Specificity
references: Parasitol Res. 2003 Jun;90(2):135-9
references: 12756548
references: Syst Parasitol. 2015 Feb;90(2):151-64
references: 25655114
references: Syst Parasitol. 2004 Nov;59(3):169-87
references: 15542947
references: Ann Parasitol Hum Comp. 1965 Mar-Apr;40:165-70
references: 14337673
references: Onderstepoort J Vet Res. 1982 Mar;49(1):41-51
references: 7122064
references: Folia Parasitol (Praha). 2011 Nov;58(4):318-21
references: 22263313