Morphology of Mandl’s corpuscules in species of the Cichlidae family and notes about these structures in fish fro

Authors

  • Jorge Rafael CASCIOTTA

Abstract

Slasmoids scales are formed by a bone distal layer and a basal one with collagen fibers placed in different directions. Mineralized structures named Mandl's corpuscles are found among the collagen fibers. In this paper scales of 28 species of the Cichlidae family and 33 belonging to other families were examined. Two kinds of corpuscles were found in the scales, polyhedrical and ovoid shaped. The polyhedrical corpuscles are usually found near the scales focuswhereas theovoidcorpuscles areplacedin the scale'smarginal areas. Polyhedrical corpuscles are bigger than ovoid corpuscles. Mandl's corpuscles are found in all cichlid species whereas only 51% of other species bear these structures. Presence of Mandl's corpuscles above Orders is variable. Mandl's corpuscles developed independently more than once. Within Ostariophysi, the absence of these structures in Gymnotiformes can be consideredas the autapomorphy for this taxon.

Key words: fish scales, elasmoid scales, Mandl's corpuscles.

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References

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How to Cite

CASCIOTTA, J. R. (2014). Morphology of Mandl’s corpuscules in species of the Cichlidae family and notes about these structures in fish fro. Revista Ciencias Morfológicas, 10(2). Retrieved from https://revistas.unlp.edu.ar/Morfol/article/view/931

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