An introduction to the taxonomy and morphology of the haplochromine Cichlidae from Lake Victoria. A manual to Greenwood's revision papers

Publication Type:Journal Article
Year of Publication:1977
Authors:M. J. P. van Oijen, Witte, F. , Barel, C. D. N. , Witte-Maas, E. L. M.
Accession Number:06296506
Keywords:Africa, Victoria L., Anatomy, cichlidae, Community composition, ECOLOGY, Fishery resources, Habitat, morphology (organisms), Q1 01343 Taxonomy and morphology, Taxonomy
Abstract:

The haplochromine Cichlidae endemic to Lake Victoria are recently estimated to comprise approximately 200 species. Morphologically these species vary within narrow limits but ecologically they demonstrate a wide and continuous spectrum of adaptations. Except for the papyrus swamps, the fish-fauna of each habitat is dominated by a particular community of haplochromine species. Besides restrictions to certain habitats most species have limited food-regimes. Together these diets comprise all food categories available (possibly with exception of zooplankton). Morphologically similar species realizing such a wide scala of adaptations are ideal objects for comparative biological research. For this reason haplochromine cichlids have been recently introduced into ethology, ontogeny, physiology, functional morphology and ecology. Another recent interest in these fishes concerns their potential economic importance; the overwhelming quantity with which haplochromine cichlids (still) occur, together with an improved fishing gear, make these relatively small fishes a source for fish meal and human consumption. Regrettably no ecological survey preceded the planning for these extensive fisheries. A major cause for this omission are the difficulties experienced in identifying haplochromine species. These difficulties result partly from the overall morphological similarity and partly from the fact that only half the estimated number of species has been described so far. The importance of identification for both fishery-biology, ecology and other biological research has been the main reason for writing this paper which introduces the techniques applied in the taxonomy of the haplochromine Cichlidae from Lake Victoria. As this taxonomy is mainly based on morphological characters, the paper consequently provides basic information on the anatomy and external aspects of these cichlids.

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