New records of digenean parasites of Clarias gariepinus (Pisces: Clariidae) from the Okavango Delta, Botswana, with description of Thaparotrema botswanensis sp. n. (Plathelminthes: Trematoda)

C. Jansen van Rensburg, J. G. van As, P. H. King

Abstract


Forty-two specimens of African sharptooth catfish Clarias gariepinus (Clariidae) were collected from a number of localities in the Okavango Delta in Botswana and examined for digenean parasites. The morpho­logy of these parasites was studied using light and scanning electron microscopy. Six digenean species, four represented by adults and two by metacercariae, belonging to five different genera were collected from vari­ous organs within the fish. Clinostomoides brieni is described from the branchial chamber; a Neodip­losto­mum type metacercariae from the musculature; Phyllodistomum bavuri and Phyllodistomum van­der­waali from the urinary bladder; Glossidium pedatum from the intestine and one new species, Thaparotrema botswanen­sis sp. n. from the gall bladder. These are all new geographical records for southern Africa.

To cite this paper: Jansen van Rensburg, C., van As, J.G. & King, P.H. 2013. New records of digenean parasites of Clarias gariepinus (Pisces: Clariidae) from the Okavango Delta, Botswana, with description of Thaparotrema botswanensis sp. n. (Plathelminthes: Trematoda). African Invertebrates 54 (2): 431–446.

Published electronically: 5 November 2013
urn:lsid:zoobank.org:pub:CE0A3037-9617-4389-A447-1E92117966FA


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