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Osteopatologias e alterações dentárias em Otaria byronia (Pinnipedia, Otariidae) da costa do Rio Grande do Sul, Brasil

2004; Fundación Zoobotánica de Rio Grande do Sul; Volume: 94; Issue: 2 Linguagem: Inglês

10.1590/s0073-47212004000200001

1678-4766

Patrícia Rodrigues Braunn, Jorge Ferigolo,

Toxoplasma gondii Research Studies

Osteopathologies and tooth alterations in Otaria byronia (Pinnipedia, Otariidae) from Rio Grande do Sul coast, Brazil.Bone diseases and tooth alterations in 47 specimens of Otaria byronia (Blainville, 1820), from southern Brazilian coast, were analized.Tooth wear and the associated bone pathologies were determined, as well as their percentuals.The main infection was osteomyelitis associated with tooth alterations, such as fractures and attrition, both of them exposing the pulp chamber.Tooth attrition increases with age, favoring fractures and their complications, including osteomyelitis, causing a high frequency of them in specimens presenting more pronounced tooth wear.In one specimen tuberculosis was found in the maxilla, perhaps primarily pulmonary.The high frequency of enamel hypoplasia might reflect cyclic food deficit.Infections and tooth fractures might be related to behaviour, such as fishermen interaction, territorial fighting, and accidents during food capture.