A case of nasal myiasis due to Oestrus ovis (Diptera: Oestridae) in a llama (Lama glama)

Abstract

Infection by the larval form of Oestrus ovis (sheep bot fly) is common in many areas of Peru. This is an obligate parasite of sheep and goats, and it is the cause of oestrosis, or nasal myiasis, which can lead to severe clinical manifestations in livestock. A case of myiasis caused by O. ovis in a llama (Lama glama) in Cuzco, Peru, is reported here. This llama presented with respiratory distress and died due to bilateral hemorrhagic pneumonia. During the necropsy, six intact dipterous larvae were recovered from the nasal fossae and cranial sinuses being identified as O. ovis. This is the first report of nasal myiasis in llamas due to O. ovis in Peru.

Human nasal myiasis caused by Oestrus ovis in the highlands of Cusco, Peru: Report of a case and review of the literature

“…ovis infestation is most common in shepherds in rural areas around the world but sporadic cases in nonshepherds have also been reported in recent years [15]. Although the most common hosts are sheep and goats, in the Cusco area O. ovis has been described in llamas [16,17]. Thus, patients in these areas may not have a history of contact with sheep but may still be at risk of infestation.…”

Human Nasal Myiasis Caused byOestrus ovisin the Highlands of Cusco, Peru: Report of a Case and Review of the Literature

“…Although the most common hosts are sheep and goats, in the Cusco area O. ovis has been described in llamas [16, 17]. Thus, patients in these areas may not have a history of contact with sheep but may still be at risk of infestation.…”

Immune humoral response of young lambs naturally infested by Oestrus ovis (Diptera: Oestridae)

“…Besides their hosts of predilection, O. ovis has been reported in wild animals as Ovis canadensis (CAPELLE, 1966), Lama glama (GOMEZ-PUERTA et al, 2013), Ovis orientalis musimon (MORENO et al, 1999(MORENO et al, , 2015, Capra sibirica (SÁNCHEZ et al, 2017) and Ammotragus lervia (BARROSO et al, 2017). This larvae is also common cause of ophthalmomyiasis in humans (FASIH et al, 2014; SANTE FERNÁNDEZ et al, 2017; RAO et al, 2018).…”