title: Case report of flipper anatomic anomaly of Sotalia guianensis from Sepetiba Bay, Rio de Janeiro.
abstract: The cetacean flipper consists of a soft tissue that encases most of the forelimb containing humerus, radius, ulna, carpals, metacarpals, and phalanges. Several studies have documented the typical cetacean's flipper anatomy, but only a few described digital anomalies and the most common are fusions and supernumerary such as polydactily and polyphalangy. The flippers of the Guiana dolphin, Sotalia guianensis have a falciform general aspect showing individual differences and marks produced by individual contact in social interactions that mainly occur on the posterior border. Here, we report for the first time a case of flippers with anatomical anomalies of loss of digits and deviation of radius of an adult S. guianensis from Baía de Sepetiba (22°54'-23°04', 43°36'-44°02'W), Rio de Janeiro, Southeastern Brazil.
authors: Laboratório de Mamíferos Aquáticos e Biodindicadores, Universidade do Estado do Rio de Janeiro MAQUA-UERJ, Projeto BioPesca, Praia Grande, SP, Brazil. juliana@marigo.com.br
authors: Juliana
authors: J
authors: Marigo
authors: Nelson S
authors: NS
authors: Pinto
authors: Paulo C
authors: PC
authors: Simões-Lopes
authors: Flach
authors: F
authors: Leonardo
authors: Alexandre F
authors: AF
authors: Azevedo
authors: José
authors: J
authors: Lailson-Brito
mesh_terms: D058500:Animal Fins / Q000002:abnormalities*; D000818:Animals; D001938:Brazil; D004289:Dolphins / Q000002:abnormalities*; D005260:Female; D005552:Forelimb / Q000002:abnormalities*; D011884:Radius / Q000002:abnormalities*