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
Poll, M. (1942)Description d'un genre nouveau de Clariidae originaire du Congo belge
Poll, M. (1944)Description préliminaire d'un Clariidae nouveau observé à Léopoldville par M. L. Tihon
Poll, M. (1944)Description préliminaire d'un Clariidae nouveau observé à Léopoldville par M. L. Tihon
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
Decu, V., Juberthie, C. and Tercafs, R. (2001)Republique Democratique Du Congo (ex-Zaire)
Devaere, S., Adriaens, D., Verraes, W. and Teugels, G.G. (2001)Cranial morphology of the anguilliform clariid Channallabes (Gunther 1873) (Teleostei: Siluriformes) are adaptations related to powerful biting?
Adriaens, D., Devaere, S., Teugels, G.G., Dekegel, B. and Verraes, W (2002)Intraspecific variation in limblessness in vertebrates: a unique example of microevolution
Adriaens, D., Devaere, S., Teugels, G.G., Dekegel, B. and Verraes, W (2002)Intraspecific variation in limblessness in vertebrates: a unique example of microevolution
Lavoué, S., Sullivan, J.P. and Hopkins, C.D. (2003)Phylogenetic utility of the first two introns of the S7 ribosomal protein gene in African electric fishes (Mormyroidea: Teleostei) and congruence with other molecular markers
Schelly, R.C. and Stiassny, M.L.J. (2004)Revision of the Congo River Lamprologus Schilthuis, 1891 (Teleostei: Cichlidae), with descriptions of two new species
Devaere, S, Teugels, G, Adriaens, D, Huysentruyt, F. and Verraes, W. (2004)Redescription of Dolichallabes microphthalmus (Poll, 1942) (Siluriformes: Clariidae)
De Schepper, N; Adriaens, D; Teugels, GG; et al. (2004)Intraspecific variation in the postcranial skeleton morphology in African clariids: a case study of extreme phenotypic plasticity
De Schepper, N; Adriaens, D; Teugels, GG; et al. (2004)Intraspecific variation in the postcranial skeleton morphology in African clariids: a case study of extreme phenotypic plasticity
Huysentruyt, F., Adriaens, D., Teugels, G.G., Devaere, S., Herrel, A., Verraes, W. and Aerts, P. (2004)Diet composition in relation to morphology in some African anguilliform clariid catfishes
Devaere, S., D. Adriaens, G. G. Teugels and W. Verraes (2005)Morphology and spatial constraints in a dorso-ventrally flattened skull, with a revised species description of Platyallabes tihoni (Poll, 1944)
Devaere, S., Adriaens, D., Teugels, G.G., De Clerck, N.M. and Postnov, A.A. (2005)Skeletal morphology of the holotype of Gymnallabes nops Roberts & Stewart, 1976, using micro CT-scanning
Sullivan, J.P. and Hopkins, C.D. (2005)A new Stomatorhinus (Osteoglossomorpha: Mormyridae) from the Ivindo River, Gabon, West Central Africa
Devaere, S., D. Adriaens, G. G. Teugels and W. Verraes (2005)Morphology and spatial constraints in a dorso-ventrally flattened skull, with a revised species description of Platyallabes tihoni (Poll, 1944)
Devaere, S., Adriaens, D., Teugels, G.G., De Clerck, N.M. and Postnov, A.A. (2005)Skeletal morphology of the holotype of Gymnallabes nops Roberts & Stewart, 1976, using micro CT-scanning
McNamara, A.M., Denizot, J.-P. and Hopkins, C.D. (2005)Comparative anatomy of the electrosensory lateral line lobe of mormyrids: The mystery of
the missing map in the genus Stomatorhinus
Devaere, S., Adriaens, D., Teugels, G.G., De Clerck, N.M. and Postnov, A.A. (2005)Skeletal morphology of the holotype of Gymnallabes nops Roberts & Stewart, 1976, using micro CT-scanning
Mamonekene, V. (2005)Ecoregion 60. Lower Congo rapids
Vreven, E.J. (2005)Mastacembelidae (Teleostei; Synbranchiformes) subfamily division and African generic division: an evaluation
Van Wassenbergh, S; Aerts, P; Adriaens, D; et al. (2005)A dynamic model of mouth closing movements in clariid catfishes: the role of enlarged jaw adductors
Van Wassenbergh, S; Herrel, A; Adriaens, D; et al. (2005)Terrestrial feeding in the eel catfish, Channallabes apus
Jansen, G., Devaere, S., Weekers, P.H.H. and Adriaens, D. (2006)Phylogenetic relationships and divergence time estimate of African anguilliform catfish (Siluriformes: Clariidae) inferred from ribosomal gene and spacer sequences
Jansen, G., Devaere, S., Weekers, P.H.H. and Adriaens, D. (2006)Phylogenetic relationships and divergence time estimate of African anguilliform catfish (Siluriformes: Clariidae) inferred from ribosomal gene and spacer sequences
Jansen, G., Devaere, S., Weekers, P.H.H. and Adriaens, D. (2006)Phylogenetic relationships and divergence time estimate of African anguilliform catfish (Siluriformes: Clariidae) inferred from ribosomal gene and spacer sequences
Devaere, S., Adriaens, D. and Verraes, W. (2007)Survey of the anguilliform Clariidae (Teleostei, Siluriformes) of Gabon and Republic of Congo, with description of two new species and key to the African clariid genera
Devaere, S., Adriaens, D. and Verraes, W. (2007)Channallabes sanghaensis sp. n., a new anguilliform catfish from the Congo River basin, with some comments on other anguilliform clariids (Teleostei, Siluriformes)
Hanssens, M., Vreven, J., E. and Snoeks, J. (2008)The ichthyofauna of Lower Congo and Pool Malebo
Vreven, E.J. and Stiassny, M.L.J. (2009)Mastacembelus simbi, a new dwarf spiny eel (Synbranchiformes: Mastacembelidae) from the lower Congo River
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
Schobert, C.S., Schwab, I.R., Stiassny, M.L., Schelly, R.C., Lowenstein, J.H., Zeiss, C. and Dubielzig, R.R. (2010)Abstract 4. Comparative ocular anatomy of four species of lower Congo River fish
Schobert, C.S., Stiassny, M.L.J. and Dubielzig, R.R. (2011)Abstract 12. Comparative ocular and craniofacial anatomy in nine species of lower Congo River fish
Schobert, C.S., Stiassny, M.L.J., Jeffery, W.D. and Dubielzig, R.R. (2011)Comparative ocular anatomy In troglomorphic fish: Sensory compensation for reduced vision
Kish, P.E., Bohnsack, B.L., Gallina, D., Kasprick, D.S. and Kahana, A. (2011)The eye as an organizer of craniofacial development
Schobert, C.S., Stiassny, M.L.J., Jeffery, W.D. and Dubielzig, R.R. (2011)Comparative ocular anatomy In troglomorphic fish: Sensory compensation for reduced vision
Lavoue, S., Miya, M., Arnegard, M.E., Sullivan, J.P., Hopkins, C.D. and Nishida, M. (2012)Comparable ages for the independent origins of electrogenesis in African and South American weakly electric fishes
Schobert, C.S., Stiassny, M.L.J., Schwab, I.R., Zeiss, C., Schelly, R.C. and Dubielzig, R.R. (2013)Comparative occular anatomy in a blind African cichlid fish, Lamprologus lethops
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
Geerinckx, T., Vreven, E.J., Dierick, M., van Hoorebeke, L. and Adriaens, D. (2013)Revision of Notoglanidium and related gerera (Siluriformes: Claroteidae) based on morphology and osteology
Lucanus, O. (2013)First notes on the husbandry of the blind cichlid Lamprologus lethops from the Congo River
Brawand, D. et al. (2014)The genomic substrate for adaptive radiation in African cichlid fish
Tougas, S. and Stiassny, M.L.J. (2014)Lamprologus markerti, a new lamprologine cichlid (Teleostei: Cichlidae) endemic to the lower Congo River in the Democratic Republic of Congo, west-central Africa
Ozouf-Costaz, C., Coutanceau, J.P., Bonillo, C., Belkadi, L., Fermon, Y., Agnese, J.F., Guidi-Rontani, C. and Paugy, D. (2015)First insights into karyotype evolution within the family Mormyridae
Lujan, N.K. and Conway, K.W. (2015)Life in the fast lane: A review of rheophily in freshwater fishes
Alter, S.E., Brown, B. and Stiassny, M.L.J. (2015)Molecular phylogenetics reveals convergent evolution in lower Congo River spiny eels
Stiassny, M.L.J. and Alter, S.E. (2015)Phylogenetics of Teleogramma, a riverine clade of African cichlid fishes, with a description of the deep-water molluskivore —Teleogramma obama — from the lower reaches of the middle Congo River.
Harrison, I.J., Brummett, R. and Stiassny, M.L.J. (2016)Congo River basin
Alter, S.E., Munshi-South, J. and Stiassny, M.L.J. (2017)Genomewide SNP data reveal cryptic phylogeographic structure and microallopatric divergence in a rapids adapted clade of cichlids from the Congo River
Day, J.J., Fages, A., Brown, K.J., Vreven, E.J., Stiassny, M.L.J., Bills, R., Friel, J.P. and Ruber, L. (2017)Multiple independent colonizations into the Congo Basin during the continental radiation of African Mastacembelus spiny eels
Mahamba Byanikiro, R., Kankonda Busanga, A., Ndjaki Nsila, J. and Micha, J.-C. (2017)Régime alimentaire et biologie de la reproduction de Stomatorhinus corneti Boulanger, 1899 (Pisces, Mormyridae)
Stiassny, M.L.J., Monsembula Iyaba, R.J.C., Liyandja, T., Mbimbi Mayi Munene, J.J., Yoko, M., and Alter, E. (2018)The evolution of extreme phenotypic convergence across fish lineages in the hyper-diverse Lower Congo River
Stiassny, M.L.J., Monsembula Iyaba, R.J.C., Liyandja, T., Mbimbi Mayi Munene, J.J., Yoko, M., and Alter, E. (2018)The evolution of extreme phenotypic convergence across fish lineages in the hyper-diverse Lower Congo River
Stiassny, M.L.J., Monsembula Iyaba, R.J.C., Liyandja, T., Mbimbi Mayi Munene, J.J., Yoko, M., and Alter, E. (2018)The evolution of extreme phenotypic convergence across fish lineages in the hyper-diverse Lower Congo River
Schedel, F.D.B., Musilová, Z. and Schliewen, U.K. (2018)New divergence ages provide novel insights into the biogeographic rigin of the East African Cichlid Radiation (EAR)
Stiassny, M.L.J. (2019)Fishes in the lower Congo River An extreme case of species divergence and convergent evolution
Sonet, G., Snoeks, J., Nagy, Z.T., Vreven, E., Boden, G., Breman, F.C., Decru, E., Hanssens, M., Zamba, A.I., Jordaens, K., Mamonekene, V., Musschoot, T., Van Houdt, J., Van Steen, M. (2019)DNA barcoding fishes from the Congo and the Lower Guinean provinces: Assembling a reference library for poorly inventoried fauna
Stiassny, M.L.J. (2019)Fishes in the lower Congo River An extreme case of species divergence and convergent evolution
Stiassny, M.L.J. (2019)Fishes in the lower Congo River An extreme case of species divergence and convergent evolution
Schedel, F.D.B., Musilova, Z. and Schliewen, U.K. (2019)East African cichlid lineages (Teleostei: Cichlidae) might be older than their ancient host lakes: new divergence estimates for the east African cichlid radiation
Aardema, M.L., Stiassny, M.L.J. and Alter, S.E. (2020)Genomic analysis of the only blind Cichlid reveals extensive inactivation in eye and pigment formation genes
Elbein, A. (2020)Earth’s deepest river conceals an evolutionary mystery
Elbein, A. (2020)Earth’s deepest river conceals an evolutionary mystery
Elbein, A. (2020)Earth’s deepest river conceals an evolutionary mystery
Stiassny, M.L. and Alter, S.E. (2021)Life in the fast lane: diversity, ecology, and speciation of cichlids in the lower Congo River
Kurata, N.P., Hickerson, M.J., Hoffberg, S.L., Gardiner, N., Stiassny, M.L.J. and Alter, S.E. (2022)Riverscape genomics of cichlid fishes in the lower Congo: Uncovering mechanisms of diversification in an extreme hydrological regime