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Arquivo Brasileiro de Medicina Veterinária e Zootecnia
Print version ISSN 0102-0935
CARVALHO, A.P.M. et al. Growth and development of estuarine dolphin (Sotalia guianensis) from Espírito Santo coast. Arq. Bras. Med. Vet. Zootec. [online]. 2012, vol.64, n.1, pp.205-208. ISSN 0102-0935. http://dx.doi.org/10.1590/S0102-09352012000100029.
The aim of this study is to analyze the development of the estuarine dolphin from the coast of Espírito Santo and verify that the analysis of X-rays of pectoral fin can be used for such. Thirty-seven Sotalia guianensis were used, determining the TL, examination of the degree of fusion of the vertebrae and X-ray of pectoral fins. At birth the TL is 103.3cm and in physically mature animals the TL is 187.5cm. The TL showed a significant correlation with the epiphyses of the distal radius and ulna and the degree of spinal fusion showed significant correlation with distal radius. It can be concluded that the X-ray analysis of the pectoral fins is a good way of assessing the physical maturation of these animals and can be used in routine procedures.
Keywords : Sotalia guianensis; radiography; physical maturity.