HISTOLOGICAL STUDIES ON THE STOMACH OF SOME EGYPTIAN BATS WITH SPECIAL REFERENCE TO THE HISTOCHEMISTRY OF THE MUCOSA
Samia, M. I. Sakr; Ramadan Abdelsadek Ramadan Mostafa;
Abstract
ABSTRACT
Few reports revealed that the differences in the histological structures and the histochemical characteristics of the gastric mucosae of some species of bats are correlated with the nature of their habitats.
The present study aims to describe differences in the histological structures of the stomach and histochemical aspects of the gastric mucosa of some species of bats which live in different localities in Egypt .
This work was done on three species of bats: the frugivorous bat Rousettus aegyptiacus, the insectivorous bat Rhinopoma hardwickei and the tomb-inhabiting bat Taphozous peforatus. These animals were caught from their natural habitats in Egypt, dissected and small pieces of the cardiac portions of their stomachs were fixed in the appropriate fixatives for histological and histochemical investigations.
The histological results revealed that the muscularis is formed of two layers i.e an outer longitudinal and inner circular muscle fibres. Both layers are thin in the frugivorous bat but thick in both the insectivorous and tomb-inhabiting bats. The submucosa also appears thicker in both the insectivorous and tomb-inhabiting bats than that in the frugivorous bat. It is built up of loose connective tissue, small blood vessels and lymphatics. In the frugivorous bat the mucosal layer consists of tubular glands distinctly formed of three cell types: the surface mucous glands, peptic cells and few parietal cells, while in the insectivorous bat the surface epithelium does not show the presence of mucous glands and the peptic cells is larger and more numerous, and the number of the parietal cells is more than that observed in the frugivorous bat. Nonetheless, in the tomb-inhabiting bat the mucosa shows a similar structure except for the presence of mucous glands that are situated at the base of the tubular glands near the muscularis mucosa, in addition to the discernible increased number of peptic and parietal cells.
The histochemical results showed differences in the stainability and distribution of polysaccharides, neutral mucopolysaccharides and total proteins of the gastric mucosae of the three species of Egyptian bats.
Conclusion: There are differences in the histological structure of the stomach and the histochemical aspects of the mucosa between frugivorous, insectivorous and tomb-inhabiting bats; this may be correlated with the differences in their habitats or the nature of their feeding habits.
Keywords: Gastric mucosa, Histology, Histochemistry, Frugivorous bats, Insectivorous bats, Tomb-inhabiting bats.
Few reports revealed that the differences in the histological structures and the histochemical characteristics of the gastric mucosae of some species of bats are correlated with the nature of their habitats.
The present study aims to describe differences in the histological structures of the stomach and histochemical aspects of the gastric mucosa of some species of bats which live in different localities in Egypt .
This work was done on three species of bats: the frugivorous bat Rousettus aegyptiacus, the insectivorous bat Rhinopoma hardwickei and the tomb-inhabiting bat Taphozous peforatus. These animals were caught from their natural habitats in Egypt, dissected and small pieces of the cardiac portions of their stomachs were fixed in the appropriate fixatives for histological and histochemical investigations.
The histological results revealed that the muscularis is formed of two layers i.e an outer longitudinal and inner circular muscle fibres. Both layers are thin in the frugivorous bat but thick in both the insectivorous and tomb-inhabiting bats. The submucosa also appears thicker in both the insectivorous and tomb-inhabiting bats than that in the frugivorous bat. It is built up of loose connective tissue, small blood vessels and lymphatics. In the frugivorous bat the mucosal layer consists of tubular glands distinctly formed of three cell types: the surface mucous glands, peptic cells and few parietal cells, while in the insectivorous bat the surface epithelium does not show the presence of mucous glands and the peptic cells is larger and more numerous, and the number of the parietal cells is more than that observed in the frugivorous bat. Nonetheless, in the tomb-inhabiting bat the mucosa shows a similar structure except for the presence of mucous glands that are situated at the base of the tubular glands near the muscularis mucosa, in addition to the discernible increased number of peptic and parietal cells.
The histochemical results showed differences in the stainability and distribution of polysaccharides, neutral mucopolysaccharides and total proteins of the gastric mucosae of the three species of Egyptian bats.
Conclusion: There are differences in the histological structure of the stomach and the histochemical aspects of the mucosa between frugivorous, insectivorous and tomb-inhabiting bats; this may be correlated with the differences in their habitats or the nature of their feeding habits.
Keywords: Gastric mucosa, Histology, Histochemistry, Frugivorous bats, Insectivorous bats, Tomb-inhabiting bats.
Other data
| Title | HISTOLOGICAL STUDIES ON THE STOMACH OF SOME EGYPTIAN BATS WITH SPECIAL REFERENCE TO THE HISTOCHEMISTRY OF THE MUCOSA | Authors | Samia, M. I. Sakr ; Ramadan Abdelsadek Ramadan Mostafa | Keywords | Keywords: Gastric mucosa, Histology, Histochemistry, Frugivorous bats, Insectivorous bats, Tomb-inhabiting bats. | Issue Date | Jun-2010 | Source | Department of Biological and Geological Sciences, faculty of education ,Ain Shams university ,Cairo ,Egypt. vo | Journal | Egyptian Journal of Zoology, 2010 ,volume 54 :299-323.(June ,2010) | Series/Report no. | VOLUME 54 :299-323.June ,2010; | Conference | No conference | Description | formerly : proceeding of the Zoological Society A.R.Egypt. |
Recommend this item
Similar Items from Core Recommender Database
Items in Ain Shams Scholar are protected by copyright, with all rights reserved, unless otherwise indicated.