Abstract

This report introduced the description of two different species of digenean parasites isolated from the intestine of Rhinopoma hardwickii with new host and locality records in Egypt. The recovered helminthes were studied morphologically and morphometrically by light microscopy and the surface topography of the two species was elucidated by scanning electron microscopy (SEM). Urotrema scabridum had an elongated body, testes were tandem, ovaries were pretesticular, and vitelline follicles were observed in 2 lateral fields. SEM showed that the anterior half was covered with random and backwardly directed tegument spines. The lumen of the oral sucker was as a longitudinal slit encircled with type I dome-shaped papillae. The ventral sucker was wrinkled and covered by tongue-shaped tegument spines and several scattered papillae. Renschetrema indicum had a fusiform body with minute spines densely distributed in the anterior part of the body; testes sub-triangular, ovary fusiform; vitellaria were randomly distributed around the ceca and genital organs. SEM showed that the fore-body was ventrally concave and surrounded by cytoplasmic ridges equipped with numerous closely packed claw-shaped spines. The oral sucker was externally surrounded by two circles of papillae while the lip of the ventral sucker was rounded and surrounded by three papillae located in its upper end and anterolaterally.

Highlights

  • The tegument and its microtopographical features, such as papillae, spines and tubercles, are considered to be the major host-parasite interface and the most important taxonomical aspects of adult trematodes (MATA-LÓPEZ & LEON-REGAGNON, 2006)

  • The morphological and morphometric characteristics of two digenetic trematodes isolated from the intestine of the lesser mouse-tailed bat Rhinopoma hardwickii were investigated by light microscopy

  • The bat was left in the sealed bag for sufficient time to achieve anaesthesia, at which time it was removed from the bag and injected intraperitoneally with an overdose of sodium pentobarbital

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Summary

Introduction

The tegument and its microtopographical features, such as papillae, spines and tubercles, are considered to be the major host-parasite interface and the most important taxonomical aspects of adult trematodes (MATA-LÓPEZ & LEON-REGAGNON, 2006). The morphological and morphometric characteristics of two digenetic trematodes isolated from the intestine of the lesser mouse-tailed bat Rhinopoma hardwickii (family Rhinopomatidae) were investigated by light microscopy.

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