Department of Zoology, Faculty of Science, Tanta University, Tanta, Egypt.
Department of Anatomy and Embryology, Faculty of Veterinary Medicine, Alexandria University, Alexandria, Egypt.
Folia Morphol (Warsz). 2022;81(2):400-411. doi: 10.5603/FM.a2021.0042. Epub 2021 May 6.
The current investigation was aimed to clarify the correlations between the feeding strategy and lingual structure of the Egyptian fruit bat captured from the Egyptian east desert.
The current work was performed on 12 adult Egyptian fruit bats that were observed grossly and with the help of the stereo, light, and scanning electron microscope. There were three types of the lingual papillae: one mechanical (filiform) and two gustatory (fungiform and circumvallate).
There were seven subtypes of filiform papillae recognised on the seven lingual regions. There were few fungiform papillae distributed among the filiform papillae on the lingual tip and two lateral parts of apex and body while fungiform papillae were completely absent in the median part. There were three circumvallate papillae. The central bulb of circumvallate papillae was surrounded by one layer of two segmented circular pad. The lingual tip had cornflower-like and diamond-shaped filiform papillae.
Histochemical results revealed that the lingual glands showed a stronger Alcian Blue (AB)-positive reaction and gave dark blue colour, while the reaction for the periodic acid-Schiff (PAS)-stain was negative. Also, the glands exhibited a blue colour as an indication of positive AB reactivity with combined AB-PAS staining.
本研究旨在阐明从埃及东部沙漠捕获的埃及果蝠的喂养策略与舌结构之间的相关性。
本工作对 12 只成年埃及果蝠进行了研究，通过肉眼观察和体视、光镜和扫描电子显微镜观察。舌乳头有三种类型：一种机械（丝状）和两种味觉（菌状和轮廓状）。
在七个舌区域识别出七种丝状乳头亚型。舌尖和尖端及体部的两个侧部有少量分布在丝状乳头之间的菌状乳头，而在中央部分则完全没有菌状乳头。有三个轮廓乳头。轮廓乳头的中央球被一层两层的圆形垫环绕。舌尖有矢车菊状和菱形的丝状乳头。
组织化学结果显示，舌腺对阿尔辛蓝（AB）呈强阳性反应，呈深蓝色，而过碘酸-雪夫（PAS）染色呈阴性反应。此外，腺表现出蓝色，表明 AB-PAS 联合染色具有 AB 反应性。
