DIFFERENTIAL IDENTIFICATION OF GASTEROPHILUS LARVAL SPP. IN DONKEYS BY ELECTRON MICROSCOPE

Karema M El-Bakry ,Reda S Fadly

doi:10.21608/avmj.2014.170995

Abstract

Larval-stage of the bot-fly Gasterophilus obtained from the stomach of Egyptian donkeys (stomach of the newly dead donkeys in Alexandria Governorate) were studied. Comparison of cuticular features, including spine distribution and shape, structure of maxillae and mandibles, cephalic sensillae and terminal abdominal segments of third instar of Gasterophilus intestinalis, Gasterophilus haemorrhoidalis, Gasterophilus nasalis and Gasterophilus pecorum. This study also focused on clarifying the fundamental differences between the second and third instars of G. haemorrhoidalis using scanning electron microscopy. One or more features distinguished among the species for the first time in Egypt. Gasterophiline larvae are of veterinary and medical importance with some human creeping cutaneous myiasis, ophthalmomyiasis and one recent record of intestinal myiasis.

Highlights

Larvae of flies belonging to the genus Gasterophilus (Diptera:Oestridae) are parasites of equids throughout the world
Larval-stage of the bot-fly Gasterophilus obtained from the stomach of Egyptian donkeys were studied
Comparison of cuticular features, including spine distribution, shape, structure of maxillae, mandibles, cephalic sensillae and terminal abdominal segments of third instar of Gasterophilus, intestinalis, Gasterophilus haemorrhoidalis, Gasterophilus nasalis and Gasterophilus pecorum This study focused on clarifying the fundamental differences between second and third instars of G. haemorrhoidalis using scanning electron microscopy

Summary

Introduction

Larvae of flies belonging to the genus Gasterophilus (Diptera:Oestridae) are parasites of equids (including horses, donkeys and zebras) throughout the world. Comparison of cuticular features, including spine distribution, shape, structure of maxillae, mandibles, cephalic sensillae and terminal abdominal segments of third instar of Gasterophilus, intestinalis, Gasterophilus haemorrhoidalis, Gasterophilus nasalis and Gasterophilus pecorum This study focused on clarifying the fundamental differences between second and third instars of G. haemorrhoidalis using scanning electron microscopy.

Results

Conclusion