Quadriacanthus species (Monogenea: Dactylogyridae) from catfishes (Teleostei: Siluriformes) in eastern Africa: new species, new records and first insights into interspecific genetic relationships

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Authors	FRANCOVÁ Kateřina SEIFERTOVÁ Mária BLAŽEK Radim GELNAR Milan MAHMOUD Zuheir N. ŘEHULKOVÁ Eva
Year of publication	2017
Type	Article in Periodical
Magazine / Source	PARASITES & VECTORS
MU Faculty or unit	Faculty of Science
Citation
Doi	http://dx.doi.org/10.1186/s13071-017-2223-4
Field	Zoology
Keywords	Monogenea; Dactylogyridae; Quadriacanthus; Siluriformes; Catfishes; Africa; Lake Turkana; Nile River Basin; New species; DNA
Description	Seven species (including four new) of Quadriacanthus were identified. These were as follows: Quadriacanthus aegypticus El-Naggar & Serag, 1986, Quadriacanthus clariadis Paperna, 1961, Quadriacanthus fornicatus n. sp., Quadriacanthus pravus n. sp., and Quadriacanthus zuheiri n. sp. from Clarias gariepinus (Clariidae); Quadriacanthus mandibulatus n. sp. from Heterobranchus bidorsalis (Clariidae); and Quadriacanthus bagrae Paperna, 1979 from Bagrus docmak (Bagridae). For both 18S-ITS1 and 28S rDNA regions, Q. clariadis from a clariid fish was found to be most closely related to Q. bagrae from a bagrid host. Quadriacanthus mandibulatus n. sp. was observed to be the most distant species from the others. The separation of Q. mandibulatus n. sp. from the other species corresponds with the different morphology of its copulatory tube. The copulatory tube is terminally enlarged in Q. mandibulatus n. sp., while the tube in all other congeners studied is comparatively small and with an oblique tapering termination.
Related projects:	ECIP - Evropské centrum ichtyoparazitologie