Journal Article
Skeletal morphology of the holotype of Gymnallabes nops Roberts & Stewart, 1976, using micro CT-scanning
Devaere, S., Adriaens, D., Teugels, G.G., De Clerck, N.M. and Postnov, A.A.
Record Number:
3777
Year:
2005
Journal:
Cybium
Pages:
281-293
Volume:
29
Abstract:
One of the major problems in the anguilliform Clariidae is the taxonomical validity and the systematic position of Gymnallabes nops. This vagueness is largely due to the fact that the description of this species is based on the holotype only, and no additional specimens are known. This also means that past studies on this holotype were limited to non-invasive research, such as external morphology and X-rays. These methods, however, yield only a limited number of valuable characters. In this study a high-resolution desktop X-ray microtomography instrument (CT-scan) was used. This enables us to confirm the results of the radiographies but also to perform a detailed osteological study, without damaging the holotype. The osteological survey showed similarities with other anguilliform clariids, in particular with Platyallabes tihoni and Gymnallabes typus. Besides these traits, G. nops shows a set of characters, revealed in this study, unique among the clariids, such as a reduction of the infraorbital bones in number and size, a large anterior outgrowth of the opercle, a clearly visible epiphyseal bridge and the typical positioning of entopterygoid and metapterygoid bones. These extra results may help to clarify the validity and the phylogenetic position of G. nops.
Times Cited:
3
Relevent Species:
Related Records:
Gunther, A. (1873)
New fishes from Angola
Boulenger, G. A. (1898)Matériaux pour la faune du Congo. Poissons nouveaux du Congo. Première Partie. Mormyres
Pappenheim, P. (1911)Zoologische Ergebnisse der Expedition des Herrn G. Tessmann nach Süd-Kamerun und Spanisch-Guinea. Fische
David, L. and Poll, M. (1937)Contribution a la faune ichthyologique de Congo Belge. Collections du Dr H. Schouteden (1924-1926) et d'autres recolteurs
Poll, M. (1942)Notes sue l'osteologie de Dolichallabes microphalmus Poll et remarques sur l'evolution des Clariidae
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Poll, M. (1945)Descriptions de Mormyridae et de Characidae nouveaux du Congo belge avec une étude du genre Stomatorhinus et des genres de Characidae nains africains
Poll, M. (1953)Les poissons d’aquarium du Congo belge.
Poll, M. (1956)Les poissons du Congo Belge et l’aquariophilie
Poll, M. (1957)Redescription de Gymnallabes tihoni Poll 1944, Clariidae microphalme du Stanley Pool (Congo belge)
Poll, M. (1957)Redescription de Gymnallabes tihoni Poll 1944, Clariidae microphalme du Stanley Pool (Congo belge)
Poll, M. (1958)Description d'un poisson aveugle nouveau du Congo belge, appartenant à la famille des Mastacembelidae
Poll, M. (1959)Résultats scientifiques des missions zoologiques au Stanley Pool subsidiées par le Cemubac (Université Libre de Bruxelles) et la Musée Royal du Congo (1957-1958)
Roman, B. (1971)Nuevas especies de peces de Río Muni (Guinea Ecuatorial)
Poll, M. (1973)Les yeux des poissons aveugles africains et de Caecomastacembelus brichardi Poll en particulier
Roberts, T.R. and Stewart, D.J. (1976)An ecological and systematic survey of fishes in the rapids of the lower Zaire or Congo river
Roberts, T.R. and Stewart, D.J. (1976)An ecological and systematic survey of fishes in the rapids of the lower Zaire or Congo river
Poll, M. (1977)Les genres nouveaux Platyallabes et Platyclarias comparés au genre Gymnallabes Gthr. Synopsis nouveau des genres de Clariidae
Poll, M. (1977)Les genres nouveaux Platyallabes et Platyclarias comparés au genre Gymnallabes Gthr. Synopsis nouveau des genres de Clariidae
Poll, M. (1977)Les genres nouveaux Platyallabes et Platyclarias comparés au genre Gymnallabes Gthr. Synopsis nouveau des genres de Clariidae
Daget, J. (1978)Contribution à la faune de la République Unie du Cameroun. Poissons du Dja, du Boumba et du Ngoko
Banister, K.E. and Bailey, R.G. (1979)Fishes collected by the Zaire River expedition 1974 - 1975
Beadle, L.C. (1981)The inland waters of tropical Africa
Travers, R.A. (1984)A review of the Mastacembeloidei, a suborder of synbranchiform teleost fishes. Part II: Phylogenetic analysis
Travers, R.A. (1984)A review of the Mastacembeloidei, a suborder of synbranchiform teleost fishes. Part I:
Anatomical descriptions
Teugels, G.G. (1986)Channallabes apus
Banister, K.E. (1986)Fish of the Zaire System
Bailey, R.G. (1986)The Zaire River system
Derijst, E. (1991)Kataloog der ichthyologische publikaties en nieuwe taxa beschreven door: Dr. Max Poll
Derijst, E. (1991)Kataloog der ichthyologische publikaties en nieuwe taxa beschreven door: Dr. Max Poll
Mo, T.-P. (1991)Anatomy and systematics of Bagridae (Teleostei) and siluroid phylogeny
Cabuy, E., Adriaens, D., Verraes, W. and Teugels, G.G. (1999)Comparative study on the cranial morphology of Gymnallabes typus (Siluriformes: Clariidae) and their less anguilliform relatives, Clariallabes melas and Clarias gariepinus
Cabuy, E., Adriaens, D., Verraes, W. and Teugels, G.G. (1999)Comparative study on the cranial morphology of Gymnallabes typus (Siluriformes: Clariidae) and their less anguilliform relatives, Clariallabes melas and Clarias gariepinus
Sullivan, J.P., Lavoué, S. and Hopkins, C.D. (2000)Molecular systematics of the African electric fishes (Mormyroidea: Teleostei) and a model for the evolution of their electric organs
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Decu, V., Juberthie, C. and Tercafs, R. (2001)Republique Democratique Du Congo (ex-Zaire)
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Jackson, P.R., Oberg, K.A., Gardiner, N. and Shelton, J. (2009)Velocity mapping in the Lower Congo River: A first look at the unique bathymetry and hydrodynamics of Bulu Reach, West Central Africa
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Lucanus, O. (2013)First notes on the husbandry of the blind cichlid Lamprologus lethops from the Congo River
Carlson, B.A., Stevens, J.A., Sukhum, K.V. and Carlson, B.A. (2013)Independent evolution of visual and electrosensory specializations in different lineages of Mormyrid electric fishes
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