Open-access Anomalias e patologias dentárias em Arctocephalus G. Saint-Hilaire & Cuvier (Pinnipedia, Otariidae) da costa do Rio Grande do Sul, Brasil

Tooth anomalies and pathologies in Arctocephalus G. Saint-Hilaire & Cuvier (Pinnipedia, Otariidae) of Rio Grande do Sul coast, Brazil

Resumo

The studied species were Arctocephalus australis (Zimmermann, 1783) and Arctocephalus tropicalis (Gray, 1872), (five specimens of each one). Anomalies were discussed under the light of theories which relate the ancestry of pinnipeds with the Ursidae; as well as concerning the evolutionary trends supposed for the Otariidae. Pathologies were related to alimentary and reproductive habits.

Pinnipedia; Otariidae; Arctocephalus; anomaly; pathology; teeth


Pinnipedia; Otariidae; Arctocephalus; anomaly; pathology; teeth

Anomalias e patologias dentárias em Arctocephalus G. Saint-Hilaire & Cuvier (Pinnipedia, Otariidae) da costa do Rio Grande do Sul, Brasil1

Tooth anomalies and pathologies in Arctocephalus G. Saint-Hilaire & Cuvier (Pinnipedia, Otariidae) of Rio Grande do Sul coast, Brazil

César Jaeger Drehmer; Jorge Ferigolo

Curso de Pós-graduação em Biociências, Pontifícia Universidade Católica do Rio Grande do Sul

ABSTRACT

The studied species were Arctocephalus australis (Zimmermann, 1783) and Arctocephalus tropicalis (Gray, 1872), (five specimens of each one). Anomalies were discussed under the light of theories which relate the ancestry of pinnipeds with the Ursidae; as well as concerning the evolutionary trends supposed for the Otariidae. Pathologies were related to alimentary and reproductive habits.

Key words: Pinnipedia, Otariidae, Arctocephalus, anomaly, pathology, teeth

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AGRADECIMENTOS. A CAPES e ao CNPq, através do seu programa RHAE, que financiaram a execução deste trabalho e a Fundação Zoobotânica do Rio Grande do Sul que deu suporte ao desenvolvimento deste. Ao colega J. L. Maciel pelo auxílio na confecção das fotografias.

Recebido em 08.V.1996; aceito em 02.XII.1996.

Referências bibliográficas

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  • Berta, A. 1991. New Enaliarctos* (Pinnipedimorpha) from the Oligocene and Miocene of Oregon and the Role of "Enaliarctids" in Pinniped Phylogeny. Smithson. Contr. Paleob., Washington, 69:1-33.
  • Bonner, W.N. 1981. Southern Fur Seals - Arctocephalus (Geoffroy Saint-Hilaire and Cuvier, 1826), p. 161-208. In: S.H. Ridgway & R.J. Harrison (Eds). Handbook of Marine Mammals. The Walrus, Sea Lions, Fur Seals and Sea Otter. New York, Academic Press, vol. I, XIV+235p.
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  • Muizon, C. DE. 1978. Arctocephalus (Hydrarctos) lomasiensis, subgen. nov. et nov. sp., un nouvel Otariidae du Mio-Pliocene de Sacaco (Perou). Bull. Inst. Fr. Et. And., Paris, 7 (3-4):169-188.
  • Repenning, C.A.; R.S. Peterson & C.L. Hubbs. 1971. Contributions to the systematics of the Southern fur seals, with particular reference to the Juan Fernández and Guadalupe species. Antarctic Res. Ser., Washington, 18:1-34.
  • Simões-Lopes, P.C.; C.J. Drehmer & P.H. Ott. 1995. Nota sobre os Otariidae e Phocidae (Mammalia, Carnivora) da costa norte do Rio Grande do Sul e Santa Catarina, Brasil. Biociências, Porto Alegre, 3 (1):173-181.
  • Wyss, A.R. 1987. The walrus auditory region and the monophyly of the pinnipeds. Am. Mus. Novit., New York, 2871:1-31.
  • Ximénez, I.; M. Lima; A. Ponce de León; L.M. Batallés & A. Malek. 1984. Estudio Estadístico de Relaciones Craneales en el "Lobo Fino" Sudamericano, Arctocephalus australis (Zimmermann, 1783). An. Ind. Lobera Pesq. Estado, Montevidéo, 33p.
  • 1
    Curso de Pós-graduação em Biociência, Pontifíca Univerdade Católica do Rio grande do Sul
  • Datas de Publicação

    • Publicação nesta coleção
      13 Jul 2009
    • Data do Fascículo
      1996

    Histórico

    • Recebido
      08 Maio 1996
    • Aceito
      02 Dez 1996
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