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Issue: Vol. 3166 No. 1: 19 Jan. 2012
Type: Articles
Published: 2012-01-19
DOI: 10.11646/zootaxa.3166.1.4
Page range: 59–68
Abstract views: 42
PDF downloaded: 22

A new Alestopetersius (Characiformes: Alestidae) from the Kwilu River (Kasai basin) of central Africa; with a phylogeny for the genus and synonymy of Duboisialestes

Faculté des Sciences, Département de Biologie, Université de Kinshasa, B.P 190 Kin XI, Democratic Republic of Congo
American Museum of Natural History, Department of Ichthyology, Central Park West at 79th Street, New York, New York 10024, USA
Characiformes Alestopetersius conspectus new species Duboisialestes synonym of Alestopetersius

Abstract

A new Alestopetersius is described from the Kwilu River in the Kasai basin of the Democratic Republic of Congo. Alesto-petersius conspectus, new species, is readily distinguished from all congeners based on attributes of squamation and col-oration. It is distinguished from “Duboisialestes” tumbensis by tooth morphology and in the possession of a distinctivecaudal-fin pigmentation patterning consisting of a median black band extending to the caudal-fin margin and flanked bydense black bands in both upper and lower fin lobes. “Duboisialestes” bifasciatus, which shares similar caudal-fin pig-mentation patterning, is distinguished from A. conspectus by the absence of a broad mid-lateral band on the body, and bytooth morphology. Results from an analysis of the relationships and generic composition of the Alestidae provide supportfor the monophyly for Alestopetersius inclusive of the members of the genus Duboisialestes, which are placed into syn-onomy with the former.Une nouvelle espèce de Alestopetersius est décrite de la rivière Kwilu dans le bassin du Kasai de la RépubliqueDemocratique du Congo. Alestopetersius conspectus, nouvelle espèce, se distingue très facilement de tout ses congénèressur les attributs de la squamation et coloration. Cette espèce est distinguée de “Duboisialestes” tumbensis par la morphol-ogie des dents et par la posséssion d'un type de pigmentation de la nageoire caudale composée d’une bande noire médianes'étendant de la marge de la caudale et flanquée de denses bandes noires dans les deux lobes supérieur et inférieur de lanageoire. “Duboisialestes” bifasciatus qui partage le même type de pigmentation de la nageoire caudale, se distingue deA. conspectus par l'absence d'une large bande mi-latérale sur le corps, et par la morphologie des dents. Les résultats d'uneanalyse des relations et de la composition générique du Alestidae fournissent un soutien pour la monophylie des Alestopetersius incluant les membres du genre Duboisialestes, qui sont placés en synonymie avec le genre précèdent.

References

  1. Arroyave, J. & Stiassny, M.L.J. (2011) Phylogenetic relationships and the temporal context for the diversification of African characins of the family Alestidae (Ostariophysi: Characiformes): Evidence from DNA sequence data. Molecular Phylogenetics and Evolution, 60(3), 385–397.

    Brooks, E.G.E., Allen, D.J. & Darwell, W.R.T. (2011) The Status and Distribution of FreshwaterBiodiversity in Central Africa. IUCN, Gland, Switzerland and Cambridge, UK, 125 pp.

    Géry, J. (1977) Characoids of the World. TFH Publications, Neptune City, NJ, 672 pp.

    Hughes, F.M.R. (1996) Wetlands. In: Adams, W.M., Goudie, A.S. & Orme, A.R. (Eds.), The Physical Geography of Africa. Oxford University Press, Oxford, UK, pp. 267–286.

    Lanyon, S.M. (1985) Detecting internal inconsistencies in distance data. Systematic Zoology, 34, 397–403.

    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.

    Mbimbi, J.J. & Stiassny, M.L.J. (2011). Fishes of the Kwilu River (Kasai basin, central Africa); a list of species collected in the vicinity of Kikwit, Bandundu Province, Democratic Republic of Congo. Check List, 7(5), 691–699.

    Paugy, D., Lévêque, C. & Teugels, G.G. (2003) The fresh and brackish water fishes of West Africa. Vol. 1. Faune et Flore Tropicales 40. IRD, Paris, MHNH, Paris & MRAC, Tervuren, 457 pp.

    Poll, M. (1967) Révision des Characidae nains africains. Annales Musée Royal de l’ Afrique Centrale, Sciences Zoologique, 162, 1–158.

    Schaefer, S.A. (2007) Petersiini. In: Stiassny, M.L.J., Teugels, G.G. & Hopkins, C.D. (Eds), The Fresh and Brackish Water Fishes of Lower Guinea, West-Central Africa. IRD Éditions, Paris, pp. 381–411.

    Stiassny, M.L.J., Brummett, R.E., Harrison, I.J., Monsembula, R. & Mamonekene, V. (2011) The status and distribution of freshwater fishes in central Africa. In: Brooks, E.G.E., Allen, D.J. & Darwell, W.R.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.

    Zanata, A.M. & Vari, R.P. (2005) The family Alestidae (Ostariophysi, Characiformes): a phylogenetic analysis of a trans-Atlantic clade. Zoological Journal of the Linnean Society, 145, 1–144.