Revalidation of Enteromius alberti and presence of Enteromius cf. mimus (Cypriniformes: Cyprinidae) in the Lake Edward system, East Africa

  • Heleen Maetens Section Vertebrates, Biology Department, Royal Museum for Central Africa, Leuvensesteenweg 13, 3080 Tervuren http://orcid.org/0000-0002-1623-9492
  • Maarten Van Steenberge Section Vertebrates, Biology Department, Royal Museum for Central Africa, Leuvensesteenweg 13, 3080 Tervuren
  • Jos Snoeks Section Vertebrates, Biology Department, Royal Museum for Central Africa, Leuvensesteenweg 13, 3080 Tervuren
  • Eva Decru Section Vertebrates, Biology Department, Royal Museum for Central Africa, Leuvensesteenweg 13, 3080 Tervuren
DOI: https://doi.org/10.5852/ejt.2020.700

Abstract

A revision was done on the species of Enteromius Cope, 1867 (Cypriniformes: Cyprinidae) from the Lake Edward system with a smooth, flexible third unbranched dorsal fin ray without serrations. Specimens with these characteristics had previously been attributed to E. perince and E. stigmatopygus. A combination of a genetic (COI, mtDNA) and a morphometric approach was used. Based on the COI gene, we found two groups with a distance of 8.5%, though neither of the two corresponded to E. perince or E. stigmatopygus. One group revealed to be conspecific with E. alberti, previously a synonym of E. stigmatopygus, described from the Rutshuru River, May-Ya-Moto (DRC, Lake Edward system), and revalidated here. In addition, E. cercops, described from the Nzoia River (Kenya, Lake Victoria basin), is put in synonymy with E. alberti. The second group was most similar to E. mimus, but differed morphologically somewhat from the types of E. mimus. Therefore, specimens of this group were identified as E. cf. mimus. Morphologically, E. alberti can be separated from E. cf. mimus based on a higher number of lateral line scales and smaller values for interorbital width, pre-pelvic distance, body depth, maximum and minimum caudal peduncle depth, head width and head depth.

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Published
2020-08-11
How to Cite
Maetens, H., Van Steenberge, M., Snoeks, J., & Decru, E. (2020). Revalidation of Enteromius alberti and presence of Enteromius cf. mimus (Cypriniformes: Cyprinidae) in the Lake Edward system, East Africa. European Journal of Taxonomy, (700). https://doi.org/10.5852/ejt.2020.700
Issue
No. 700 (2020)
Section
Zoology

Copyright (c) 2020 Heleen Maetens, Maarten Van Steenberge, Jos Snoeks, Eva Decru

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