ESRA AKAT, ÖZLEM ÇAKICI, Yunus Emre DİNÇASLAN, HÜSEYİN ARIKAN

Histochemical and histological investigations on Duvernoy’s gland in Natrix tessellata (Squamata: Colubridae)

Temporal bölgede konumlanan ve oral bir bez olan Duvernoy bezi sadece colubrid yılanlarda bulunur. Bu çalışma Natrix tessellata (Laurenti, 1768)’da Duvernoy beziyle ilgili ilk morfolojik ve histolojik çalışmadır. Bez bağ dokusu tarafından kuşatılır. Bağ dokusu bezin iç kısımlarına uzanarak asinuslar ve iç salgı kanallarını da kuşatarak lobulleri oluşturur. Duvernoy bezi seromukoz hücrelerden oluşan seromukoz asinuslar ve mukoz hücrelerden oluşan mukoz asinuslardan oluşur. Asinuslar histokimyasal özelliklerine göre karakterize edilirler. Bez temel olarak seromukoz asinuslardan oluşurken, mukoz hücreler bezin merkezi ve iç salgı kanalı etrafı ile sınırlı kalır.

Anahtar Kelimeler:

doku bilimi, Natrix, bezler (hayvan), doku kimyası, seromukoit, yılan

Natrix tessellata’nın (Squamata: Colubridae) Duvernoy bezinde histolojik ve histokimyasal incelemeler

Duvernoy’s gland, an oral gland located in temporal region, is only found in Colubrid snakes. This is the first report describing morphological and histological structure of Duvernoy’s gland in Natrix tessellata (Laurenti, 1768). It is surrounded by a connective tissue layer which penetrates into the gland by forming many septa, dividing the glandular body into lobules and including the acini and the inner ducts. Duvernoy’s gland is formed by seromucous acini composed of seromucous cells, and mucous acini composed of mucous cells and they are recognized by their histochemical characteristics. The gland is mainly organized in seromucous acini, mucous cells are restricted to the gland center region and to the inner secretion duct lining epithelium.

Keywords:

histology, Natrix, glands (animal), histochemistry, seromucoid, snakes,

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