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The Scientific World Journal
Volume 2013, Article ID 968652, 5 pages
http://dx.doi.org/10.1155/2013/968652
Research Article

A Comparative Morphometrical Study of the Pecten Oculi in Different Avian Species

1Department of Anatomy, Faculty of Veterinary Medicine, University of Selcuk, 42075 Konya, Turkey
2Department of Histology and Embryology, Faculty of Veterinary Medicine, University of Selcuk, 42075 Konya, Turkey

Received 5 April 2013; Accepted 5 May 2013

Academic Editors: D. Endoh and B. I. Yoon

Copyright © 2013 Mustafa Orhun Dayan and Tugba Ozaydın. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

In this study was investigated the structure of pecten oculi in the ostrich, duck, pigeon, turkey, and starling. The pecten oculi of the ostrich was vaned type and made up primary, secondary, and few tertiary lamellae. However, duck, pigeon, turkey and starling had a pleated-type pecten oculi which displayed folded structure. The numbers of pleats of the pectens were 12, 13-14, 21-22, and 17 in duck, pigeon, turkey, and starling, respectively. Light microscopic investigation demonstrated that pecten oculi is basically composed of numerous capillaries, large blood vessels, and pigment cells in all investigating avian species. Capillaries were 20.23, 14.34, 11.78, 12.58, and 12.78 μm in diameter in ostrich, duck, pigeon, turkey, and starling, respectively. The capillaries are surrounded by thick basal membrane, and pigmented cells were observed around the capillaries.