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Histological and Morphological Study of the Uropygial Gland in Gull (Larus canus) | ||
| Diyala Journal For Pure Science | ||
| Article 1, Volume 13, Issue 3, 2017, Pages 230-239 | ||
| Author | ||
| Khalid Ibrahim Abd Al-Khazraji | ||
| Abstract | ||
| This study has been done in order to investigate the anatomical and histological structures of the uropygial gland in gulls (Larus canus). The gland of birds in the present study was examined macroscopically and microscopically. The study revealed that the gland has heart-shaped like, consisted of two lobes joined together at caudal end by isthmus, and one short papillae. The weight of gland was recorded mean of (0.81± 0.12 gram), while the means of the length and diameter of right and left lobe were (1.19± 0.06 cm, 0.35± 0.04cm and 1.18± 0.03 cm, 0.34 ± 0.02cm ) respectively. The gland showed dense connective tissue capsule surrounded the two lobes and the papillae, and each lobe has parenchyma and central cavity. The parenchyma consists of a straight and convoluted secretory tubules separated by tiny trabeculae that increased in thickness toward the lobe center. The epithelial lining of secretory tubules showed four cellular layers; includes the basal, intermediate, secretory and degenerative cells. Three zones in the parenchyma were detected based on the trabecular development, widening of the tubule lumen and the height of epithelial lining. To conclude, the uropygial gland could be classified as exocrine and holocrine type in gull. | ||
| Keywords | ||
| Parenchyma; Lobe; tubules; Gull | ||
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