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Gross, ultrastructural, and histological characterizations of pecten oculi of the glossy ibis (Plegadis falcinellus): New insights into its scanning electron microscope–energy dispersive X-ray analysis
Microscopy Research and Technique ( IF 2.5 ) Pub Date : 2022-09-28 , DOI: 10.1002/jemt.24228
Ramadan Kandyle 1 , Hebat Allah El Basyouny 1 , Kareem Morsy 2, 3 , Nagah M Abourashed 4 , Naglaa Madkour 5 , Mohamed M A Abumandour 5
Affiliation  

The current study shows the first attempts to clarify the gross, ultrastructure, and histological properties of the pecten oculi of the diurnal, visually active glossy ibis, as well as scanning electron microscope–energy dispersive X-ray (SEM–EDX) image analysis (Plegadis falcinellus). The pecten oculi was found on the eyeball's posteroinferior wall, adjacent to the optic nerve in both the craniocaudal and posterio-anterior directions. The plicated quadrilateral black pigmented pecten oculi consisted of a base, 10–12 pleats, and an apex. The base was joined by an elevated ridge and derived from the non-vascular retina, while the apex was not a fused part and was found neighboring the gelatinous vitreous body. The limited interpleat spaces were somewhat wider at the base of the pecten oculi. The outer surface of each highly vascular pecten pleat revealed a tortious coiled formation due to the existence of a considerable number of capillary vessels. The outer pleat surfaces had a vitreopecteneal limiting membrane that segregated the pecten pleats from the vitreous body. The high SEM magnification revealed that there are considerable plentiful hyalocyte cells on the outer surface of the pleats. The SEM–EDX analysis of the elementary formatting of the pecten oculi (at apex, middle, and base) clarified that the carbon represents the highest and a half percent. Furthermore, oxygen represents one-third of all elemental composition in the three regions, while the lowest percentage is calcium. Finally, the pecten oculi characterizations of this migratory bird on the Northern Egyptian shore were associated with their adaptive dietary strategies.

中文翻译:

有光泽的朱鹭 (Plegadis falcinellus) 的大眼、超微结构和组织学特征:对其扫描电子显微镜的新见解——能量色散 X 射线分析

目前的研究首次尝试阐明昼夜、视觉活跃的有光泽朱鹭的眼梳的大体、超微结构和组织学特性,以及扫描电子显微镜-能量色散 X 射线 (SEM-EDX) 图像分析 (镰刀草). 在眼球的后下壁上发现了 pecten oculi,在头尾和后前方向都与视神经相邻。褶皱的四边形黑色色素眼梳由一个基部、10-12 个褶皱和一个顶点组成。基部由一个升高的脊连接并且源自非血管视网膜,而顶点不是融合部分并且被发现与凝胶状玻璃体相邻。有限的 interpleat 空间在 pecten oculi 的底部有点宽。由于大量毛细血管的存在,每个富含血管的梳状褶皱的外表面都显示出扭曲的盘绕结构。外褶皱表面有一个玻璃体限制膜,将梳状褶皱与玻璃体隔开。高 SEM 放大倍数显示在褶皱的外表面上有相当丰富的透明细胞。SEM–EDX 对梳状孔(顶部、中部和底部)基本格式的分析表明,碳占最高的 0.5%。此外,氧占这三个区域所有元素组成的三分之一,而百分比最低的是钙。最后,这种生活在埃及北部海岸的候鸟的鳃盖骨特征与其适应性饮食策略有关。氧占这三个地区所有元素组成的三分之一,而百分比最低的是钙。最后,这种生活在埃及北部海岸的候鸟的鳃盖骨特征与其适应性饮食策略有关。氧占这三个地区所有元素组成的三分之一,而百分比最低的是钙。最后,这种生活在埃及北部海岸的候鸟的鳃盖骨特征与其适应性饮食策略有关。
更新日期:2022-09-28
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