Title
Morphology And Density Distribution Of Cone Photoreceptor In The Retina Of The Atlantic Stingray, Dasyatis-Sabina
Abbreviated Journal Title
J. Morphol.
Keywords
Reef Teleosts; Topography; Streaks; Areae; Anatomy & Morphology
Abstract
Light miscroscopy of the retina in the Atlantic stingray, Dasyatis sabina, reveal two distinct photoreceptor types. Histological criteria establish the two cell types as morphological rods and cones. The retina was studied through a sequential series of vertical sections in a protocol designed to evaluate the entire retina. By performing differential counts in multiple regions and expressing cones as a percent of the total photoreceptors in a domain, it was possible to determine relative cone density and distribution. Cone distribution varies throughout the retina in two patterns. First, relative cone density gradually decreases peripherally. Second, a cone-rich band occurs along the horizontal axis of the eye, extending from ora serrata to ora serrata. This structure appears to be a visual streak. Both distribution patterns are statistically significant and are consistent among animals regardless of age. (C) 1994 Wiley-Liss, Inc.
Journal Title
Journal of Morphology
Volume
221
Issue/Number
3
Publication Date
1-1-1994
Document Type
Article
Language
English
First Page
277
Last Page
289
WOS Identifier
ISSN
0362-2525
Recommended Citation
"Morphology And Density Distribution Of Cone Photoreceptor In The Retina Of The Atlantic Stingray, Dasyatis-Sabina" (1994). Faculty Bibliography 1990s. 748.
https://stars.library.ucf.edu/facultybib1990/748
Comments
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