Title

Morphology And Density Distribution Of Cone Photoreceptor In The Retina Of The Atlantic Stingray, Dasyatis Sabina

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. © 1994 Wiley‐Liss, Inc. Copyright © 1994 Wiley‐Liss, Inc.

Publication Date

1-1-1994

Publication Title

Journal of Morphology

Volume

221

Issue

3

Number of Pages

277-289

Document Type

Article

Identifier

scopus

Personal Identifier

scopus

DOI Link

https://doi.org/10.1002/jmor.1052210304

Socpus ID

0028026308 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0028026308

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