Histopathological studies on donkeys infested with larvae Gasterophilus species

ABSTRACT

The histopathological alterations of infested parts with different larval stages of Gasterophilus spp. were studied in details. The 1st-instar larvae of G. intestinalis and G. pecorum were located in the tongue. The 2nd-instars larvae of G. pecorum were found only in the pharynx, while those of the 3rd instars were observed in both pharynx and stomach. The 2nd and 3rd instar larvae of G. intestinalis and G. nasalis were found in the stomach and duodenum respectively. It has been concluded that gasterophilus spp. Larvae cause eosinophilic reaction with reactive fibroplasia and necrosis in the tongue, pharynx, stomach and duodenum. Ulcer formation in the mucosa of stomach and duodenum were observed