02567nas a2200265   4500008004100000245012400041210006900165260000900234300001000243490000700253520175600260653001202016653001502028653002002043653001602063653002602079653001402105653001702119653001902136100002002155700001702175700001802192700001902210856007202229       2001                        eng d00aGut morphology and morphometry in the epauletted Wahlberg’s fruit bat (<i>Epomophorus wahlbergi</i>, Sundevall, 1846)0 aGut morphology and morphometry in the epauletted Wahlberg s frui  c2001  a75-890 v523 aThe morphological adaptations of the fruit bat small intestine to which the high functional efficiency could be related and the possible landmarks delineating the various parts of the gut were examined. The stomach was the carnivorous type with large rugae spanning the entire luminal aspect down to the pyloric sphincter, which was reflected internally as a prominent fold. Externally, the intestine was a continuous tube uninterrupted by any structures. The cranial fifth of the small gut had long, branching and anastomosing villi, which caudally turned to finger-like discrete structures that became rather short and stumpy and diminished at the beginning of the colon. The colon had longitudinal folds that were macroscopically discernible from the mucosal aspect of the opened intestine and that continued into the rectum. The small gut formed 94% of the whole intestinal length, the colon and the rectum taking 4 and 2%, respectively. Ultrastructurally, the enterocyte showed a prominent brush border and the lateral membranes were modified into numerous tortuous interdigitating processes. Adjacent enterocytes were joined by these processes through desmosomes. The processes also participated in pinocytotic fluid uptake from the intercellular spaces with resultant numerous intracellular vacuoles of varied sizes. Solutes absorbed into the cells were probably first passed into the intercellular compartment to create a concentration gradient thus enhancing further absorption into the cell. We conclude that the uniquely elaborate ultrastructure of the enteric epithelium coupled with the vast microvillous surface areas reported elsewhere are partly responsible for the very high absorption rates reported in the fruit bat small intestine.10aanatomy10aChiroptera10adigestive tract10aEast Africa10aEpomophorus wahlbergi10ahistology10aPteropodidae10aultrastructure1 aMakanya, A., N.1 aSelf, T., J.1 aWarui, C., N.1 aMwangi, D., K.  uMakanya et al. 2001.pdf http://dx.doi.org/10.1556/ABiol.52.2001.1.8