title: Pathology of natural Przhevalskiana silenus infestation in goats.
abstract: Among the arthropods causing diseases to animals, myiasis causes a broad range   of infestations depending on the location of larvae and its developmental stages on the body   of the host. These infestations reduce host physiological functions, destroy host tissues and   cause significant economic losses to livestock worldwide. This study was conducted to find   out the pathological changes of goats tissue infested with Przhevalskiana silenus. Goat   warble fly infestation (GWFI), improperly named goat hypodermosis, is a myiasis caused by   larvae of P. silenus. Out of 16,250 goats examined in the slaughter house in the studied area,   433 (2.67%) were infested with warble fly. The minimum and maximum rate of infectivity was   7 and 84 with an average of 32.4 warbles per animal. Histopathological examinations were   carried out on the infested subcutaneous tissues. Infiltration of the mononuclear cell types,   tissue necrosis, pyogranulomatous reaction, hyalinization, mineralization, muscle   fragmentation, oedema, and hyperemia of arterioles and capillaries were the most important   microscopic findings associated with different developmental stages of P. silenus instars in   the goats. The results of this survey indicated that GWF is a widespread infestation in Shiraz,   Fars Province, southern part of Iran.
authors.affiliation: Department of Pathology, School of Veterinary Medicine, Shiraz University, Shiraz, Iran. oryan@shirazu.ac.ir
authors.forename: A
authors.initials: A
authors.lastname: Oryan
authors.forename: S
authors.initials: S
authors.lastname: Bahrami
mesh_terms: D000003:Abattoirs; D000818:Animals; D004175:Diptera / Q000472:pathogenicity*; D015511:Goat Diseases / Q000469:parasitology* / Q000473:pathology*; D006041:Goats / Q000469:parasitology*; D006651:Histocytochemistry; D007492:Iran; D007814:Larva / Q000472:pathogenicity; D008853:Microscopy; D009198:Myiasis / Q000469:parasitology* / Q000473:pathology*; D059208:Parasite Load; D040521:Subcutaneous Tissue / Q000469:parasitology / Q000473:pathology