Pathological lesions as consequence of apilic accident in Blue-and-yellow macaw (Ara ararauna)

Abstract

Apilic accident, in medicine, is the name given to the phenomenon of aggression by bees of the genus Apis. This article describes the pathological consequences of a case of Africanized bees attacking examples of Blue-and-yellow macaw (Ara ararauna) captive by a wild fauna maintainer, located in the south of Minas Gerais State. Anatomically, vascular changes and inflammatory reactions were observed in the stung site as flushing, bruising and edema, as well as the histopathological evaluation showed generalized congestion, disseminated intravascular hemolysis, inflammatory infiltration composed of eosinophils, basophils and lymphocytes. Microscopically, vascular lesions were found, as already seen in macroscopy, with renal and hepatic edema being observed in all individuals, necrosis in proximal contorted tubules and inflammatory infiltration throughout the renal and pulmonary interstitium. Other changes observed included myocardial edema, increased cell volume in renal tubules, inflammatory infiltrate into the liver parenchyma, pulmonary edema and hepatocyte vacuolization. According to histopathological findings, we can state that the characteristic of type I hypersensitivity lesions was found in the macaws of this case, being similar to that observed in mammals. Therefore, this information contributes to a better understanding of avian apical accidents, as well as in order to influence studies for future therapeutic procedures for birds.