Morphological Studies of the Oral Roof of the Egyptian Laughing Dove (Streptopelia senegalensis aegyptiaca) and Japanese Quail (Coturnix coturnix japonicum)

Fatma A. Madkour
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引用次数: 6

Abstract

This study aimed to determine the morphological characteristics of the palate, choanal slit of two birds of different families; Japanese Quail (JQ) for family Phasianidae and Laughing Dove (LD) for family Columbidae by gross anatomy, scanning electron microscopy and light microscopy. The organs of 16 birds (eight laughing doves and eight Japanese quails) were used. The length of the oropharyngeal roof was nearly equal in both birds; it was divided into oral and pharyngeal roofs. The oral roof (palate) was narrow elongated triangular shaped in LD and wide triangular shaped in JQ, and the oral roof (palate) was longer in LD than that of JQ. The ratio of the oral roof (palate) to the total length of the oro- pharynx was 86.36% in LD and 72.82% in JQ. The choanal slit constituted a nearly same percentage of the length of the palate which was 49-50% while to the total length of the oropharynx was 43.19% in LD and 36.75% in JQ. The line of separation between narrow and wide parts of the choanal slit demarcated by caudolaterally directed papillae and mucosal elevation in LD and by a transverse row of V-shaped papillae in JQ. The edges of the rostral narrow part bear small sized wide-spaced papillae having serrated appearance, while the edges of the wide part were smooth in LD. In JQ 3 transverse rows of papillae and one transverse mucosal fold were presented around the choanal slit. The lamina propria of the palate consisted of dense connective tissue, rich in several types of sensory corpuscles; Merkel's corpuscles were the majority of the sensory corpuscles in LD. Herpst corpuscles with variable sizes and shapes were the majority of sensory corpuscles in JQ. Submucosa of the palate on each side of the choanal slit consisted of 2 groups of palatine salivary glands; medial and lateral groups in JQ and few lobules of the medial salivary glands were observed in LD.
埃及笑鸽(Streptopelia senegalensis aegyptiaca)和日本鹌鹑(Coturnix Coturnix japonicum)口顶的形态学研究
研究了不同科的两种鸟的上颚、喉缝的形态特征;大体解剖、扫描电镜及光镜分析结果显示,日本鹌鹑(JQ)为鹌鹑科,笑鸽(LD)为笑鸽科。使用了16种鸟类(8只笑鸽和8只日本鹌鹑)的器官。两种鸟口咽顶的长度几乎相等;它分为口腔和咽顶。口腔上腭呈窄长三角形,下颌部呈宽三角形,下颌部的上腭较下颌部长。LD和JQ患者的上颚长度占口腔咽总长度的比例分别为86.36%和72.82%。后喉缝占上颚长度的比例几乎相同,为49-50%,而口咽部占总长度的比例在LD和JQ中分别为43.19%和36.75%。宽尾沟缝狭窄部分和宽尾沟缝之间的分界线,由尾侧指向的乳头和LD的粘膜抬高以及JQ的横排v形乳头所划分。吻侧窄部边缘有小而宽的乳头状突起,呈锯齿状,宽部边缘光滑。jq3中,在后鼻缝周围可见横行乳头状突起和1个横向粘膜褶皱。上颚固有层由致密的结缔组织组成,富含多种感觉小体;LD组感觉小体以默克尔小体为主,JQ组感觉小体以大小形状各异的Herpst小体为主。后肛裂两侧腭黏膜下层由2组腭唾液腺组成;LD大鼠JQ内、外侧分布明显,内侧唾液腺小叶较少。
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