Abstract

HERRERA, J.M.  and  BERKUNSKY, I.. Polidactilia y asimetría fluctuante en el "loro hablador" (Amazona aestiva): ¿signos de estrés del desarrollo?. Rev. vet. [online]. 2017, vol.28, n.1, pp.62-64. ISSN 1669-6840.

Some abnormalities such as polydactyly and fluctuating asymmetry occur as a result of developmental stress. A case of developmental stress that includes polydactyly, fluctuating asymmetry, and fault bars in one Blue-fronted Amazon nestling (Amazona aestiva), is reported. These anomalies were related to the stress caused by a wildland fire. Two nestlings of a same nest were examined. Physical examination showed anomalies only in the small nestling which included a) polydactyly in the right leg, b) colour asymmetry in wing feathers with an atypical staining pattern in the right wing and c) stress bars in red pigmentation area of secondary feathers of both wings. Wildland fires should be considered as a major stress factor for nesting birds of the Beni Savanna (north of Bolivia).

Keywords : parrot; polydactyly; fluctuant asymmetry; developmental stress; fire.

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