![]() Loss of feathers and soiling of the vent is seen in poultry. cause genital lesions on the vulva and prepuce. Lucilia sericata tends to cause lesions on the inner thighs and perineum due to faecal soiling. Warble flies cause cysts along the midline of the back. often causes ulceration, GI bleeding, weight loss, diarrhoea and pupae are voided in faeces. Gastrointestinal myiasis caused by Gasterophilus spp. Nasal myiasis causes irritation and epistaxis.Īural myiasis can cause deafness, discharge and foul exudates. There is also likely to be direct tissue damage, haemorrhage, hyperpigmentation and secondary infection. Pain, irritation, discomfort, alopecia and pruritus are common signs locally. Presence of wounds, wet fleece in sheep cases, recent surgery, bacterial wool/skin contamination and faecal contamination are the main predisposing factors for myiasis.ĭensity of stock will determine size and viability of the fly population.Ĭan be classified as cutaneous, nasopharyngeal, intestinal or urogenital. Myiasis Producing Flies are found in most regions of the world. and Caliphora spp.įor more information, see Myiasis Producing Flies. Facultativeįacultative flies are free-living and usually found in detritus or carrion.Ĭochliomyia macellaria, Chrysomya megacephala, rufifacies and albiceps, Lucilla sericata and cuprina, Phormia spp., Protophormia spp. Oestrus ovis, Gasterophilus spp., Hypoderma spp., Dermatobia spp, Wohlfahrtia spp., Cochliomyia, Chrysomya bezziana and Cordylobia. ![]() Obligate flies occur exclusively in or on living vertebrates. Myiasis Producing Flies can be obligate or facultative. These larvae then feed on the host’s living and dead tissue. Small and large ruminants and poultry can be affected. Myiasis is caused by infestation of live hosts with dipterous larvae. Larval form of Gasterophilus spp stomach botfly.
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