Abdel Rahman, M., Hassanen, E., Abdel Mageed, M. (2018). Light and scanning electron microscopy of Gasterophilus intestinalis (larvae and adult fly) infesting donkeys with emphasis on histopathology of the induced lesions.. test, 14(1), 15-31. doi: 10.21608/evmspj.2018.33951
Mona Mohammed Abdel Rahman; Eman Ahmed Hassanen; Manar Ahmed Abdel Mageed. "Light and scanning electron microscopy of Gasterophilus intestinalis (larvae and adult fly) infesting donkeys with emphasis on histopathology of the induced lesions.". test, 14, 1, 2018, 15-31. doi: 10.21608/evmspj.2018.33951
Abdel Rahman, M., Hassanen, E., Abdel Mageed, M. (2018). 'Light and scanning electron microscopy of Gasterophilus intestinalis (larvae and adult fly) infesting donkeys with emphasis on histopathology of the induced lesions.', test, 14(1), pp. 15-31. doi: 10.21608/evmspj.2018.33951
Abdel Rahman, M., Hassanen, E., Abdel Mageed, M. Light and scanning electron microscopy of Gasterophilus intestinalis (larvae and adult fly) infesting donkeys with emphasis on histopathology of the induced lesions.. test, 2018; 14(1): 15-31. doi: 10.21608/evmspj.2018.33951

Light and scanning electron microscopy of Gasterophilus intestinalis (larvae and adult fly) infesting donkeys with emphasis on histopathology of the induced lesions.

Egyptian Veterinary Medical Society of Parasitology Journal (EVMSPJ)
Article 2, Volume 14, Issue 1, December 2018, Pages 15-31    PDF (499.77 K)
Document Type: Original Article
DOI: 10.21608/evmspj.2018.33951
Authors
Mona Mohammed Abdel Rahman1; Eman Ahmed Hassanen1; Manar Ahmed Abdel Mageed2
1Parasitology Departement,Faculty of Veterinary Medicine,Zagazig University
2Pathology Departement,Faculty of Veterinary Medicine,Zagazig University
Abstract
Stomach horse bots, the larvae of the Gasterophilus intestinalis flies (bot flies), inhabit the stomach of equines and cause damage ranging from mild gastritis to stomach ulcers and peritonitis. The adult flies are non-parasitic and incapable of feeding, yet they survive on the nutrients left from the larval stage for approximately 10-14 days, a period long enough for them to mate and lay eggs. In this study, morphological characterization of adult fly, second and third larval stages of G. Intestinalis (Diptera: Oestridae) is illustrated using light and scanning electron microscopes (SEM). The later clarifies the structures of cephalic segment, sensory array of distal maxilla (mouth hooks), thoracic and abdominal spines and terminal abdominal segment of second instar and third instar. Morphological differences between second and third stage larvae of G. intestinalis are also discussed in this work. Adult fly antennae and antennal sensilla are studied using SEM, each antenna consisted of scape, flattened disc like pedicel, pyriform funiculus and arista. Funiculus had five types of sensilla (trichoid, basiconic, coeloconic, clavate and auriculate). Arista was composed of one or two short basal segments without sensilla and one long distal segment covered with coeloconic III sensilla. It is concluded that light and SEM should be used in conjunction for the description of G. intestinalis but SEM is considered superior in description of their ultrastructure. Finally, pathological lesions in the stomach wall of infested donkeys are described.
Keywords
Gasterophilus intestinalis; Horse bot; donkeys; Larvae; adult fly; antenna; sensilla; ulcer; Scanning electron microscope
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