Open Access Open Access  Restricted Access Subscription or Fee Access


DOI: http://dx.doi.org/10.11646/zootaxa.3852.3.8

Lamprologus markerti, a new lamprologine cichlid (Teleostei: Cichlidae) endemic to the lower Congo River in the Democratic Republic of Congo, west-central Africa

STEPHANIE TOUGAS, MELANIE L.J. STIASSNY

Abstract


A new Lamprologus is described from the lower Congo River (LCR) in the Democratic Republic of Congo. Lamprologus markerti, new species, is readily distinguished from L. tigripictilis and L. werneri, the LCR endemic lamprologines with which it was once taxonomically conflated, in the possession of a reduced number of gill rakers on the first arch (9–11 versus 12–17), a longer head (32.1–34.7% SL versus 29.3–31.9 and 29.1–32.9% SL, respectively), and a longer predorsal length (33.0–35.9% SL versus 29.3–32.7 and 28.5–32.6% SL, respectively). Further, L. markerti lacks a second intestinal loop present in both L. tigripictilis and L. werneri, and has a highly reduced infraorbital series often consisting of a single first infraorbital (lachrymal) element.

 


Keywords


new riverine Lamprologus, Bas Congo endemism

Full Text:

PDF/A (1.51 MB)

References


Barel, C.D.N., van Oijen, M.J.P., Witte, F. & Witte-Maas, E.L.M. (1977) An introduction to the taxonomy and morphology of the haplochromine Cichlidae from Lake Victoria. A manual to Greenwood’s revision papers. Netherlands Journal of Zoology, 27, 333–389.

Klingenberg, C.P. (2011) MorphoJ: an integrated software package for geometric morphometrics. Molecular Ecology Resources, 11, 353–357.
http://dx.doi.org/10.1111/j.1755-0998.2010.02924.x

Leviton, A.E., Gibbs, R.H., Heal, J.E. & Dawson, C.E. (1985) Standards in herpetology and ichthyology: Part 1. Standard symbolic codes for institutional resource collections in herpetology and ichthyology, Copeia, 1985, 802–832.

Lowenstein, J.H., Osmundson, T.W., Becker, S., Hanner, R. & Stiassny, M.L.J. (2011) Incorporating DNA barcodes into a multi-year inventory of the fishes of the hyperdiverse Lower Congo River, with a multi-gene performance assessment of the genus Labeo as a case study, Mitochondrial DNA, 21 (S2), 1–19.

Markert, J.A, Schelly, R.C. & Stiassny, M.L.J. (2010) Genetic isolation and morphological divergence mediated by high-energy rapids in two cichlid genera from the lower Congo rapids. BMC Evolutionary Biology, 10, 149.
http://dx.doi.org/10.1186/1471-2148-10-149

Roberts, T.R. & Stewart, D.J. (1996) An ecological and systematic survey of fishes in the rapids of the Lower Zaire or Congo River. Bulletin of the Museum of Comparative Zoology, Harvard, 147, 241–318.

Rohlf, F.J. (2013) tpsDIG2 version 2.17. Department of Ecology and Evolution, State University of New York at Stony Brook. Available from: http://life.bio.sunysb.edu/ee/rohlf/software.html (accessed 15 May 2014)

Rohlf, F.J. & Slice, D.E. (1990) Extensions of the Procrustes method for the optimal superimposition of landmarks. Systematic Zoology, 39, 40–59.
http://dx.doi.org/10.2307/2992207

Schelly, R.C. & Stiassny, M.L.J. (2004) Revision of the Congo River Lamprologus Schilthuis, 1891 (Teleostei: Cichlidae), with description of two new species. American Museum Novitates, 3451, 1–40.
http://dx.doi.org/10.1206/0003-0082(2004)451<0001:rotcrl>2.0.co;2

Stiassny, M.L.J., Brummett, R.E., Harrison, I.J., Monsembula, R. & Mamonekene, V. (2011) The status and distribution of the freshwater fishes of Central Africa. In: Brooks, E.G.E., Allen, D.J. & Darwell, W.T. (Compilers), The Status and Distribution of freshwater biodiversity in Central Africa. IUCN: Gland, Switzerland and Cambridge, UK, pp. 27–46.

Taylor, W.R. & Van Dyke, G.C. (1985) Revised procedures for staining and clearing small fishes and other vertebrates for bone and cartilage study. Cybium, 9, 107–119.

Webster, M. & Sheets, H.D. (2010) A practical introduction to landmark-based geometric morphometrics. Quantitative Methods in Paleobiology, 16, 168–188.


Refbacks

  • There are currently no refbacks.


 
ISSN 1175-5326 (Print Edition) & ISSN 1175-5334 (Online Edition)
Published by Magnolia Press, Auckland, New Zealand
A founding journal of Biotaxa