Posthatching ultrastructural development of the oropharyngeal cavity roof in five age-stages of Coturnix coturnix (Linnaeus, 1758),Microscopy Research and Technique

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Posthatching ultrastructural development of the oropharyngeal cavity roof in five age-stages of Coturnix coturnix (Linnaeus, 1758)
Microscopy Research and Technique ( IF 2.0 ) Pub Date : 2021-07-27 , DOI: 10.1002/jemt.23885
Mohamed Abumandour ₁ , Mustafa Shukry ₂ , Samah Lashen ₃ , Mohammed Kassab ₄ , Ramadan Kandyle ₅ , Mahmoud Gewaily ₆ , Ahmed El-Mansi _{7,

8} , Ahmad El Askary ₉ , Hazem Hamoda ₁₀ , Foad Farrag ₆

Affiliation

Department of Anatomy and Embryology, Faculty of Veterinary Medicine, Alexandria University, Alexandria, Egypt.
Department of Physiology, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafrelsheikh, Egypt.
Department of Cytology and Histology, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt.
Department of Cytology and Histology, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafrelsheikh, Egypt.
Zoology Department, Faculty of Science, Tanta University, Tanta, Egypt.
Department of Anatomy and Embryology, Faculty of Veterinary Medicine, Kafrelsheikh University, Egypt.
Biology Department, Faculty of Science, King Khalid University, Abha, Saudi Arabia.
Zoology Department, Faculty of Science, Mansoura University, Mansoura, Egypt.
Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia.
Department of Anatomy and Embryology, Faculty of Veterinary Medicine, Aswan University, Aswan, Egypt.

Recent literature has demonstrated only adult avian palate, albeit there has been only limited focus on the postnatal development of the avian oropharyngeal cavity roof. Hence, the current investigation was designed to obtain the full ultrastructure postnatal description of the oropharyngeal roof during the five developmental age-stages of Coturnix coturnix by employing assessments using gross morphometric analysis and stero and scanning electron microscopy. The elongated triangular oropharyngeal roof has a spoonful rounded beak tip. The palate region is subdivided into the rostral ridged area and the choanal area. The palate has eight longitudinal palatine ridges (seven nonpapillated and one papillated median) and four transverse papillary rows (one slightly oblique row and three transverse papillary crests). The median palatine ridge continuous caudally and is then divided into three ridges: one median and two paramedian ridges (forming the lateral boundaries of the choanal field). The choanal field had three regions (rostral, middle, and caudal). The finger-like projection papillary region has five papillae. The choanal cleft has two unequal parts (rostral and caudal). The rostral nonpapillated short choanal part is subdivided by transverse papillary row into rostral narrow straight and caudal diamond portions. The caudal wide papillated choanal part is further divided by a second transverse crest into rostral long (encircled by interdigitated papillae) and caudal short wider part (not encircled by interdigitated papillae). The infundibular cleft is not bordered by any papillae, while the pharyngeal region has numerous papillae and openings of the salivary glands. Moreover, the morphometric analysis revealed a higher value with increasing age for all dimensions. Our findings indicated a higher degree of functional adaptation between the five developmental age stages of quail. Our observations suggest that adaptations such as these may increase the efficiency of food prehension with increasing age.

中文翻译：

Coturnix coturnix 五个年龄阶段口咽腔顶部的孵化后超微结构发育 (Linnaeus, 1758)

最近的文献表明只有成年鸟类的上颚，尽管对鸟类口咽腔顶的出生后发育的关注有限。因此，目前的调查旨在获得Coturnix coturnix五个发育年龄阶段口咽顶的完整超微结构出生后描述通过使用大体形态测量分析和立体和扫描电子显微镜进行评估。细长的三角形口咽顶部有一勺圆形喙尖。上颚区域细分为喙突区域和后鼻孔区域。上颚有 8 条纵向腭脊（7 条无乳突和 1 条乳突正中）和 4 条横向乳突（1 条微斜线和 3 条横乳突）。腭正中脊在尾部连续，然后分为三个脊：一个中脊和两个旁正中脊（形成后鼻孔的横向边界）。后鼻孔区有三个区域（喙部、中部和尾部）。指状突起乳头区有五个乳头。后鼻孔裂有两个不相等的部分（喙和尾）。嘴侧无乳头状短后鼻孔部分被横向乳头状排细分为嘴侧窄直和尾部菱形部分。尾部宽乳头后鼻部被第二个横嵴进一步分为喙长（由叉指状乳头环绕）和尾部较短的较宽部分（未由叉指状乳头环绕）。漏斗裂不与任何乳头接壤，而咽部区域有许多乳头和唾液腺开口。此外，形态测量分析显示，随着年龄的增加，所有维度的值都更高。我们的研究结果表明鹌鹑的五个发育年龄阶段之间的功能适应程度更高。我们的观察表明，随着年龄的增长，诸如此类的适应可能会提高食物吸收的效率。

更新日期：2021-07-27

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