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The Influence of Light Deprivation On the Development of the Eye and Retina in the Cichlid Sarotherodon Mossambicus (Teleostei)

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image of Netherlands Journal of Zoology
For more content, see Archives Néerlandaises de Zoologie (Vol 1-17) and Animal Biology (Vol 53 and onwards).

Postbuccal specimens of Sarotherodon mossambicus were raised under different photic conditions. Light deprivation resulted in an enlargement of the pupil, an enlargement of the double cones, a diminution of the single cones, a moderate decrease of cone density and a substantial decrease of postsynaptic cell densities. Dim light only affects the single cone size. The results are discussed from a functional and a morphogenetic point of view and are compared with the results of other investigations which relate to the retinal variations with different environmental light conditions.

Affiliations: 1: (Research-Group Ecological Morphology, Zoölogisch Laboratorium, University of Leiden, Postbus 9516, 2300 RA Leiden, The Netherlands


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