Anatomical features of the tongue of two chiropterans endemic in the Egyptian fauna; the Egyptian fruit bat (Rousettus aegyptiacus) and insectivorous bat (Pipistrellus kuhlii)

Massoud, Diaa; Abumandour, Mohamed M. A.

doi:10.1016/j.acthis.2020.151503

Cited by 21 publications

(47 citation statements)

References 62 publications

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“…2A, 3A. These observations are consistent with and supported by several studies where the authors stated that there is no lingual median sulcus or prominence in the tongue of bats and hedgehogs [26][27][28][29][30][31].…”

Section: Discussionsupporting

confidence: 88%

“…In the current research, the dorsal surface of bats' tongue was distinguished by a plentiful number of two subtypes of filiform papillae (flower and leaflike types). The different shapes of filiform papillae might be due to different chewing ways and feeding styles [29,38]. Flowers' nectar, fruits and fruit juice constitute the diet of the Egyptian fruit bats.…”

Section: Discussionmentioning

confidence: 99%

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Comparative evaluation of the ultrastructural morphology and distribution of filiform and fungiform tongue papillae in Egyptian mice, fruit bats and long-eared hedgehogs

et al. 2020

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The tongue is a specialized vital organ. It aids in mastication, deglutition and food digestion. It also shares in the perception of taste sensation as it possesses various gustatory papillae. It is being subjected to numerous anatomical and histological examinations aiming at exploring the correlation between its morphological features and animal adaptations to various types of nutrition and environmental conditions. The goal of the present work was to compare the ultrastructural features of the filiform and fungiform papillae of three various mammals possessing different feeding habits; Egyptian mice, fruit bats and long-eared hedgehogs. Specimens were obtained from the tongues of four healthy adult animals from each mammalian type. Tongues were fixed and all the appropriate procedures were done to perform scanning electron microscopic investigation. Scanning electron microscopic examination demonstrated that in mice, there were four different sub-types of filiform papillae (spike, leaf, conical and tongue-shaped). In bats, there were two sub-types (flower and leaf-like) and in hedgehogs, there was only one type (tongue-like). These filiform papillae showed different distribution and orientation. As for the fungiform papillae, they were cylindrical in mice, rounded or conical in bats and dome-shaped in hedgehogs. Fungiform papillae possessed taste pores containing taste buds. Ultrastructural variations of the filiform and fungiform papillae were suggested to be probably due to adaptation to various feeding habits and different environmental conditions of these animals.

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Section: Discussionsupporting

confidence: 88%

Section: Discussionmentioning

confidence: 99%

Comparative evaluation of the ultrastructural morphology and distribution of filiform and fungiform tongue papillae in Egyptian mice, fruit bats and long-eared hedgehogs

et al. 2020

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“…The filiform lingual papillary system is the common morphological structure of the mammalian tongue (Abumandour, 2014b; Massoud & Abumandour, 2020) while, it uncommon in avian tongue. At the recent time, the ultrastructural inspection confirmed the presence of the filiform papillae on the lingual apex and body of the some avian species that related to the feeding habits, mechanism, and available food particle (Abumandour, 2018; Abumandour & El‐Bakary, 2017a; Abumandour & El‐Bakary, 2017b; Abumandour & El‐Bakary, ).…”

Section: Discussionmentioning

confidence: 99%

Posthatching developmental studies on the tongue and laryngeal entrance of the common quail (Coturnix coturnix, Linnaeus, 1758) in different five age‐stages

Abumandour

Farrag

El‐Mansi

et al. 2021

Microscopy Res & Technique

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The present study represents the first trial to characterize the ultrastructural of five ages of Coturnix coturnix. Lingual nail had membrane that differ in number among five studied ages. Filiform papillary system had four caudally directed papillae types; small (apex, rostral, and median part of body in 1 day, body in 10 and 20 days), long (apex and rostral part of body in 10 days, tip and two lateral area in 20, 30, 40-days, lateral border in 1 and 10 days, two lateral area of body in 40 days), broad (median area of body in 20, 30, 40 days). Scales on the ventral surface of apex, mound. Lingual sulci on the apex and body without reaching tip in 10, 20, 30, 40-days while, in 1 day the body had ridge caudally. Three papillae on posterior part of lateral border of body. W-shape crest had papillae on its median part while, its lateral part had two giant papillae on each side. Dorsal giant papillae terminated caudally with six processes, while ventral papillae terminated caudally with three processes. The unique root appearance, at 1 day had four papillae while in 10-day, it had one papilla however in 20, 30, 40 days, it had T-shaped ridge. Mound had one longitudinal row on each side of cleft and two transverse papillary rows at its caudal border and additional row at 40-days. Our findings exposed unique structural and functional characterizations of lingual and laryngeal entrance that reflected with feeding behavior.

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“…There are two bat classifications: Megachiropterans and Microchiropterans. Megachiropterans largely consume fruits (Abumandour, 2014; El‐Mansi, Al‐Kahtani, & Abumandour, 2019; Izhaki, Korine, & Arad, 1995; Massoud & Abumandour, 2020) and are represented in the Egyptian fauna as the fruit‐eating bat ( Rousettus aegyptiacus ) (Abumandour & Pérez, 2017). Megabats such as flying foxes and fruit‐eating bats can navigate nocturnally by the sense of sight and they do not have the ability to echolocate (Jones & Teeling, 2006; Waters & Vollrath, 2003).…”

Section: Introductionmentioning

confidence: 99%

Retinal characterization in the eyes of two bats endemic in the Egyptian fauna, the Egyptian fruit bat (Rousettus aegyptiacus) and insectivorous bat (Pipistrellus kuhlii), using the light microscope and transmission electron microscope

Aboelnour

Noreldin

Massoud

et al. 2020

Microscopy Res & Technique

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Bats are the only mammals that can fly in the dark without eye usage. This study was conducted to describe the structural and functional adaptations of the retina of two bats very common in the Egyptian fauna having a different lifestyle: the Egyptian fruit bat (Rousettus aegyptiacus) and insectivorous bat (Pipistrellus kuhlii). Seven eyes were collected from adult individuals of each species. Examination of the retina using a light microscope and a transmission electron microscope was carried out. The retina of P. kuhlii was thicker than that of R. aegyptiacus, which had many projections extended from the choroid layer into retina forming papillae. Despite rods being dominant in retinae of both species, cone photoreceptors were encountered in both retinae. The outer plexiform layer of R. aegyptiacus was arranged into islets between the outer nuclear layer produced differences in its thickness. However, the retina of P. kuhlii showed a normal arrangement of retinal structure. The retinal pigment epithelium of both bat species consists of a single layer of the cuboidal cells with a round to oval vesicular nuclei, which showed a lack of pigmentation in R. aegyptiacus and poor pigmentation in the P. kuhlii. In conclusion, our investigation detected many structural and ultrastructural differences between the two bat species. The presence of many projections protruded from the choroid layer of R. aegyptiacus retina is considered the most characteristic difference between the retinae of R. aegyptiacus and

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Anatomical features of the tongue of two chiropterans endemic in the Egyptian fauna; the Egyptian fruit bat (Rousettus aegyptiacus) and insectivorous bat (Pipistrellus kuhlii)

Cited by 21 publications

References 62 publications

Comparative evaluation of the ultrastructural morphology and distribution of filiform and fungiform tongue papillae in Egyptian mice, fruit bats and long-eared hedgehogs

Comparative evaluation of the ultrastructural morphology and distribution of filiform and fungiform tongue papillae in Egyptian mice, fruit bats and long-eared hedgehogs

Posthatching developmental studies on the tongue and laryngeal entrance of the common quail (Coturnix coturnix, Linnaeus, 1758) in different five age‐stages

Retinal characterization in the eyes of two bats endemic in the Egyptian fauna, the Egyptian fruit bat (Rousettus aegyptiacus) and insectivorous bat (Pipistrellus kuhlii), using the light microscope and transmission electron microscope

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