Comparative analysis of the eye anatomy in fossorial and surface‐living skink species (Reptilia: Scincidae), with special reference to the structure of the retina

We compared the eye anatomy of the scotopic fossorial Acontias orientalis, Acontias rieppeli and Typhlosaurus vermis with that of the photopic surface‐living Trachylepis punctatissima, with particular reference to the retina. The findings were compared with published data on gecko species (Röll, 200...

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Veröffentlicht in:Acta zoologica (Stockholm) 2020-07, Vol.101 (3), p.311-323
Hauptverfasser: Zhao, Zhongning, Goedhals, Jacqueline, Verdú‐Ricoy, Joaquín, Jordaan, Adriaan, Heideman, Neil
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container_title Acta zoologica (Stockholm)
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creator Zhao, Zhongning
Goedhals, Jacqueline
Verdú‐Ricoy, Joaquín
Jordaan, Adriaan
Heideman, Neil
description We compared the eye anatomy of the scotopic fossorial Acontias orientalis, Acontias rieppeli and Typhlosaurus vermis with that of the photopic surface‐living Trachylepis punctatissima, with particular reference to the retina. The findings were compared with published data on gecko species (Röll, 2001), to determine whether similar trends existed. The vestigial eye of T. vermis was not comparable with that of the other three skink species. The findings in A. orientalis, A. rieppeli and T. punctatissima were as follows: (a) A. rieppeli lacked a conus papillaris, (b) A. orientalis, A. rieppeli and T. punctatissima were pure‐cone species but lacked a fovea, (c) estimated cone density in A. orientalis and A. rieppeli was lower than that in T. punctatissima, (d) the ellipsoid cone segment was smaller and the paraboloid segment larger in A. orientalis and A. rieppeli with the reverse in T. punctatissima, (e) VCL%, ONL%, OPL% and GCL% in A. orientalis and A. rieppeli were significantly greater than that of T. punctatissima, (f) INL% and IPL% in T. punctatissima was significantly greater, and (g) T. punctatissima had abundant Müller cells and fibres. Findings in the gecko species were congruent with those of the three skink species of the present study.
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source Wiley Online Library Journals Frontfile Complete
subjects Anatomy
Comparative analysis
Eye
Fibers
fossorial
Fovea
Geckos
Gekkonidae
Parabolic bodies
photopic
Retina
Scincidae
scotopic
Species
surface‐living
Vision
title Comparative analysis of the eye anatomy in fossorial and surface‐living skink species (Reptilia: Scincidae), with special reference to the structure of the retina
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