Open Veterinary Journal

Peer-Reviewed Journal

Doppler ultrasonography of the pectinis oculi artery in harpy eagles (Harpia harpyja)

 

Wanderlei de Moraes(1,2), Thiago A.C. Ferreira(1), André T. Somma(1), Zalmir S. Cubas(2), Bret A. Moore(3) and Fabiano Montiani-Ferreira(1,*)

 

1 Universidade Federal do Paraná (UFPR), Departamento de Medicina Veterinária, Rua dos Funcionários, 1540, 80035-050, Curitiba - PR, Brazil

2 ITAIPU Binacional, Diretoria de Coordenação, Departamento de Áreas Protegidas, Refúgio Biológico Bela Vista, Rua Teresina, 62, Vila C,85870-280, Foz do Iguaçu - PR, Brazil

3 University of California-Davis, School of Veterinary Medicine, Ophthalmology, 1 Garrod Drive, Davis, CA, 95695, USA

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Abstract

Twenty harpy eagles (Harpia harpyja) without systemic or ocular diseases were examined to measure blood velocity parameters of the pectinis oculi artery using Doppler ultrasonography. Pectinate artery resistive index (RI) and pulsatility index (PI) were investigated using ocular Doppler ultrasonography. The mean RI and PI values across all eyes were 0.44±0.10 and 0.62±0.20 respectively. Low RI and PI values found in the harpy eagle´s pectinis oculi artery compared with the American pekin ducks one and other tissue suggest indeed a high metabolic activity in pecten oculi and corroborates the hypothesis of a nutritional function and/or intraocular pressure regulation. 

Keywords: Avian posterior segment, Pulsatility index, Raptors, Resistive index.

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Cite this paper:
de Moraes, W., Ferreira, T.A.C., Somma, A.T., Cubas, Z.S., Moore, B.A. and Montiani-Ferreira, F. 2017. Doppler ultrasonography of the pectinis oculi artery in harpy eagles (Harpia harpyja). Open Vet. J. 7(1), 70-74.