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Ahead of Print
Original article
Published online: 2021-04-28
Submitted: 2021-02-19
Accepted: 2021-03-28
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Structural and Functional adaptation of the lingual papillae of the Egyptian fruit bat (Rousettus aegyptiacus): Specific Adaptive feeding Strategies

R. M. Kandyel, M. M.A. Abumandour, S. F. Mahmoud, M. Shukry, N. Madkour, A. El-Mansi, F. A. Farrag
DOI: 10.5603/FM.a2021.0042
·
Pubmed: 33954957

open access

Ahead of Print
ORIGINAL ARTICLES
Published online: 2021-04-28
Submitted: 2021-02-19
Accepted: 2021-03-28

Abstract

The current investigation was directed 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 depends on twelve adult Egyptian fruit bats that 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 were recognized on the seven lingual regions. There were scanty numbers of fungiform papillae distributed among the filiform papillae on the lingual tip and two lateral parts of apex and body while fungiform papillae completely absent in the median part. There were three circumvallate papillae. The central bulb of circumvallate papillae surrounded by one layer of two segmented circular annular bad. The lingual tip had cornflower-like and diamond-shaped filiform papillae. Histochemical results revealed that the lingual glands were a stronger AB-positive reaction and gave dark blue color, while the reaction for the PAS-stain was negative. Also, the glands exhibited a blue color as an indication of positive AB reactivity with combined AB-PAS staining.

Abstract

The current investigation was directed 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 depends on twelve adult Egyptian fruit bats that 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 were recognized on the seven lingual regions. There were scanty numbers of fungiform papillae distributed among the filiform papillae on the lingual tip and two lateral parts of apex and body while fungiform papillae completely absent in the median part. There were three circumvallate papillae. The central bulb of circumvallate papillae surrounded by one layer of two segmented circular annular bad. The lingual tip had cornflower-like and diamond-shaped filiform papillae. Histochemical results revealed that the lingual glands were a stronger AB-positive reaction and gave dark blue color, while the reaction for the PAS-stain was negative. Also, the glands exhibited a blue color as an indication of positive AB reactivity with combined AB-PAS staining.

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Keywords

Egyptian fruit bat, lingual papillae, scanning electron microscope (SEM), histology, histochemical examination

About this article
Title

Structural and Functional adaptation of the lingual papillae of the Egyptian fruit bat (Rousettus aegyptiacus): Specific Adaptive feeding Strategies

Journal

Folia Morphologica

Issue

Ahead of Print

Article type

Original article

Published online

2021-04-28

DOI

10.5603/FM.a2021.0042

Pubmed

33954957

Keywords

Egyptian fruit bat
lingual papillae
scanning electron microscope (SEM)
histology
histochemical examination

Authors

R. M. Kandyel
M. M.A. Abumandour
S. F. Mahmoud
M. Shukry
N. Madkour
A. El-Mansi
F. A. Farrag

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