Journal Article
Diet composition in relation to morphology in some African anguilliform clariid catfishes
Huysentruyt, F., Adriaens, D., Teugels, G.G., Devaere, S., Herrel, A., Verraes, W. and Aerts, P.
Record Number:
5807
Year:
2004
Journal:
Belgian Journal of Zoology
Pages:
25-30
Volume:
134
Abstract:
ABSTRACT. Genera of the catfish family Clariidae that have an extreme anguilliform body shape (e.g. Dolichallabes,
Gymnallabes and Channallabes) are also characterized by an extreme hypertrophy of the jaw closing muscles.
Whereas it has been demonstrated that the hypertrophy of these muscles results in increased bite performance,
the adaptive significance of these enlarged jaw muscles remains unclear. Given that hypertrophied forms bite harder
it was suggested that the hypertrophy of the jaw adductors might be correlated with changes in diet or an altered
feeding pattern. To test this hypothesis, stomach contents were analysed from specimens of a few more anguilliform
species, as well as in a limited set of specimens from some of the less anguilliform clariid species. The results show
that specimens with a more anguilliform body-shape have a different feeding pattern with a special preference for
coleopterans. However, the absence of bite-marks on the prey retrieved from the stomachs indicated that jaw morphology
and bite performance are not likely to be related to the dietary composition in the species with hypertrophied
jaw adductors.
KEY WORDS : anguilliformity, Clariidae, diet, ecomorphology, Siluriformes.
Times Cited:
3
Relevent Species:
Related Records:
Gunther, A. (1873)
New fishes from Angola
Pappenheim, P. (1911)Zoologische Ergebnisse der Expedition des Herrn G. Tessmann nach Süd-Kamerun und Spanisch-Guinea. Fische
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
Roman, B. (1971)Nuevas especies de peces de Río Muni (Guinea Ecuatorial)
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
Teugels, G.G. (1986)Channallabes apus
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
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?
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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
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
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, 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
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