Paracamallanus cyathopharynx (Baylis, 1923) Yorke et Maplestone, 1926

Moravec, František & Jirků, Miloslav, 2017, Some nematodes from freshwater fishes in central Africa, Folia Parasitologica (033) 64, pp. 1-39 : 32

Paracamallanus cyathopharynx (Baylis, 1923) Yorke et Maplestone, 1926

Syn.: Paracamallanus senegalensis Vassiliad ẻs, 1970

Hosts: Eel catfish Channallabes apus (Günther) , Clariallabes teugelsi Ferraris , Clarias buthupogon Sauvage and North African catfish C. gariepinus (Burchell) (all Siluriformes : Clariidae).

Site of infection: Intestine (distal part).

Localities: A small swamp (bai) north of Bayanga 03°00'54''N; 16°16'12''E ( Congo basin), DSPA, Central African Republic ( C. apus , collected 16 September 2012); unspecified locality in Bas Congo ( Congo basin, C. gariepinus , collected 10 July 2008, and Bulu 05°01'30''N; 14°00'25''E ( C. teugelsi , collected 11 July 2008); Lower Congo River, Democratic Republic of the Congo – Pioka 04°54'25''N; 14°23'53''E ( C. buthupogon , C. gariepinus , collected 7 July 2008); and.

Prevalence and intensity: C. apus : 2 fish infected/7 fish examined; 1 nematode in each fish. C. teugelsi : 1/1; 4. C. buthupogon : 2/2; 2–3. C. gariepinus : 2/2; 2–3.

Deposition of voucher specimens: IPCAS N-12.

Remarks. Paracamallanus cyathopharynx was recently redescribed in detail by Moravec and Van As (2015b). Since the morphology of present specimens is in agreement with this redescription, we refrain from describing these nematodes again. According to the above-mentioned authors, P. cyathopharynx has been reported from six species of African clariid catfishes, serving apparently as its definitive hosts, whereas some fishes of other families harbouring this parasite probably represent paradefinitive or postcyclic hosts. The present findings of P. cyathopharynx in Channallabes apus , Clariallabes teugelsi and Clarias buthupogon represent new host records.

This nematode species seems to be a common and widespread parasite in Africa, being reported from Egypt, Sudan, Ethiopia, Democratic Republic of the Congo, Tanzania, Nigeria, Senegal, Zimbabwe, Botswana and South Africa (see Moravec and Van As 2015b, Moravec and Scholz 2017). Central African Republic represents a new geographical record for this nematode. The development of this nematode in the copepod intermediate host was experimentally studied by Moravec (1974b).