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Evaluation of periotic–timpanic bone complex of Sotalia guianensis (Cetacea: Delphinidae) as tool in identification of geographic variations

  • Danilo Leal Arcoverde (a1), Renata Emin-Lima (a2), Alexandra Fernandes Costa (a2), Ana Paula Madeira Di Beneditto (a3), Salvatore Siciliano (a2) (a4), Leonardo Sena (a1), Ignacio Benites Moreno (a5) and José De Sousa E Silva (a2)...

Abstract

Morphometric characteristics of the periotic–timpanic bone complex in the middle ear of cetaceans, are effective characteristics in evaluating systematics. However, they have not been used for studies of geographic variation regarding dolphins of the genus Sotalia. This study aimed to compare the periotic–timpanic of Sotalia guianensis from four distinct locations, considered here as different operational taxonomic units, Amapá/Pará (AM/PA), Maranhão/Piauí (MA/PI), Ceará (CE), and Rio de Janeiro (RJ), using 21 morphometric measurements. Multivariate analysis showed significant distinction mainly between the units of northern (AM/PA and MA/PI) and south-eastern (RJ) Brazilian coast. The timpanic bone showed variation, reaching larger sizes in the Brazilian south coast unit, corroborating current molecular data on the geographic variation of S. guianensis.

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Corresponding author

Correspondence should be addressed to: D.L. Arcoverde, Biologia e Conservação de Mamíferos Aquáticos da Amazônia (BioMA), Belém, Pará, Brazil email: arcoverde.d.l@gmail.com

References

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Azevedo, A.F., Viana, S.C., Oliveira, A.M. and Sluys, M.V. (2005) Group characteristics of marine tucuxis (Sotalia fluviatilis) (Cetacea: Delphinidae) in Guanabara Bay, south-eastern Brazil. Journal of the Marine Biological Association of the United Kingdom 85, 209212.
Borobia, M. (1989) Distribution and morphometrics of South American dolphins of the genus Sotalia. Mestrado, McGill University, Montreal, Quebec, Canada.
Caballero, S., Trujillo, F., Vianna, J.A., Barrios-Garrido, H., Montiel, M.G., Beltran-Pedreros, S., Marmontel, M., Santos, M.C., Rossi-Santos, M., Santos, F.R. and Baker, C.S. (2007) Taxonomic status of the genus Sotalia: species level ranking for ‘tucuxi’ (Sotalia fluviatilis) and “costero” (Sotalia guianensis) dolphins. Marine Mammal Science 23, 358386.
Casinos, A., Bisbal, F. and Boher, S. (1981) Sobre tres exemplares de Sotalia fluviatilis del Lago Maracaibo (Venezuela) (Cetacea, Delphinidae). Proceedings of the Department of Zoology 7, 9396.
Cunha, H.A., da Silva, V.M.F. and Solé-Cava, A.M. (2010) Molecular ecology and systematics of Sotalia dolphins. In Ruiz-Garcia, M. and Shostell, J. (eds) Biology, evolution and conservation of river dolphins within South America and Asia. Hauppauge, NY: Nova Science Publishers.
Cunha, H.A., da Silva, V.M.F., Lailson-Brito, J., Santos, M.C.O., Flores, P.A.C., Martin, A.R., Azevedo, A.F., Fragoso, A.B.L., Zanelatto, R.C. and Sole-Cava, A.M. (2005) Riverine and marine ecotypes of Sotalia dolphins are different species. Marine Biology 148, 449457.
Dias, L.A., Herzinga, D. and Flach, L. (2009) Aggregations of estuarine dolphins (Sotalia guianensis), in Sepetiba Bay, Rio de Janeiro, south-eastern Brazil: distribution patterns and ecological characteristics. Journal of the Marine Biological Association of the United Kingdom 89, 967973.
Fettuccia, D.C., da Silva, V.M.F., Rocha, M.S. and Simões-Lopes, P.C. (2012) Sternum and appendicular skeleton: morphometric differences between the species of genus Sotalia (Cetacea: Delphinidae). Journal of the Marine Biological Association of the United Kingdom 92, 16571662.
Fettuccia, D.d.C. (2006) Comparação osteológica nas espécies do gênero Sotalia Gray, 1866 no Brasil (Cetacea, Delphinidae). MSc thesis. Instituto Nacional de Pesquisas da Amazônia–INPA/Universidade Federal do Amazonas–UFAM, Manaus.
Flores, P.A.C. and Bazzalo, M. (2004) Home ranges and movements patterns of the marine tucuxi Sotalia fluviatilis in Baía Norte, southern Brazil. Latin American Journal of Aquatic Mammals 3, 3752.
Flores, P.A.C. and da Silva, V.M.F. (2009) Tucuxi and guiana dolphin: Sotalia fluviatilis and S. guianensis. In Perrin, W.F., Würsig, B.G. and Thewissen, J.G.M. (eds) Encyclopedia of marine mammals. San Diego, CA: Academic Press, pp. 11881192.
Geisler, J.H. and Luo, Z.X. (1996) The petrosal and inner ear of Herpetocetus sp. (Mammalia: Cetacea) and their implications for the phylogeny and hearing of archaic mysticetes. Journal of Paleontology 70, 10451066.
Gould, S.J. and Johnston, R.F. (1972) Geographic variation. Annual Review of Ecology, Evolution, and Systematics 3, 457498.
Heyer, W.R. (2005) Variation and taxonomic clarification of the large species of the Leptodactylus pentadactylus species group (Amphibia: Leptodactylidae) from middle America, northern South America and Amazonia. Arquivos de Zoologia: Museu de Zoologia da Universidade de São Paulo 37, 269384.
Kasuya, T. (1973) Systematic consideration of recent toothed whales based on the morphology of tympano-periotic bone. Scientific Reports of the Whales Research Institute 25, 1103.
Mead, J.G. and Fordyce, R.E. (2009) The Therian skull: a lexicon with emphasis on the Odontocetes. Smithsonian Contributions to Zoology 627, 248.
Möller, L.M., Wiszniewski, J., Allen, S.J. and Beheregaray, L.B. (2007) Habitat type promotes rapid and extremely localized genetic differentiation in dolphins. Marine and Freshwater Research 58, 640648.
Monteiro-Filho, E.L.d.A., Monteiro, L.R. and Reis, S.F. (2002) Skull shape and size divergence in dolphins of the genus Sotalia: a tridimensional morphometric analysis. Journal of Mammalogy 83, 125134.
Nery, M.F., Especie, M.d.A. and Simão, S.M. (2008) Marine tucuxi dolphin (Sotalia guianensis) injuries as a possible indicator of fisheries interaction in southeastern Brazil. Brazilian Journal of Oceanography 56, 313316.
Parente, C.L., Alves, M.I.M., Furtado-Neto, M.A.A. and Monteiro-Neto, C. (1999) Estudo da morfologia dos ossos tímpano-perióticos de cetáceos da sub-ordem odontoceti (Mammalia: Cetacea). Arquivo de Ciências do Mar 32, 103110.
Peloso, P.L.V. and Avila-Pires, T.C.S. (2010) Morphological variation in Ptychoglossus brevifrontalis Boulenger, 1912 and the status of Ptychoglossus nicefori (Loveridge, 1929) (Squamata, Gymnophthalmidae). Herpetologica 66, 357372.
Perrin, F.W., Yablokov, A.V., Barlow, J. and Mina, M.V. (1994) Comparison of the resolving power of metric and non-metric cranial characters in defining geographical populations of dolphins. Natural History Museum of Los Angeles County, Contributions to Science 447, 115.
Perrin, W.F. (1975) Variation of spotted and spinner porpoise (genus Stenella) in the Eastern Pacific and Hawaii. Bulletin of the Scripps Institution of Oceanography 21, 1206.
Perrin, W.F. (1984) Patterns of geographical variation in small cetaceans. Acta Zoologica Fennica 172, 137140.
Ramos, R.M.A. (2001) Variação morfológica em Pontoporia blainvillei e Sotalia fluviatilis (Cetacea) na costa sudeste do Brasil. PhD thesis. Universidade Estadual do Norte Fluminense, UENF, Campos dos Goytacazes.
Rensch, B. (1938) Some problems of geographical variation and species formation. Proceedings of the Linnean Society of London 150, 275285.
Rossi-Santos, M.R., Wedekin, L.L. and Monteiro-Filho, E.L.A. (2007) Residence and site fidelity of Sotalia guianensis in the Caravelas River Estuary, eastern Brazil. Journal of the Marine Biological Association of the United Kingdom 87, 207212.
Santos, M.C.d.O., Acuña, L.B. and Rosso, S. (2001) Insights on site fidelity and calving intervals of the marine tucuxi dolphin (Sotalia fluviatilis) in south-eastern Brazil. Journal of the Marine Biological Association of the United Kingdom 81, 10491052.
Schnell, G.D., Douglas, M.E. and Hough, D.J. (1986) Geographic patterns of variation in offshore spotted dolphins (Stenella attenuata) of the eastern tropical Pacific Ocean. Marine Mammal Science 2(3), 186213.
Silva, V.M.F.d. and Best, R.C. (1996) Mammalian species: Sotalia fluviatilis. American Society of Mammalogists 527, 17.
Simões-Lopes, P.C. (2006) Morfologia do sincrânio do boto-cinza Sotalia guianensis (P.J. van Bénéden) (Cetacea, Delphinidae). Revista Brasileira de Zoologia 23, 652660.
StatSoft (2005) STATISTICA (data analysis software system). Tulsa, OK: StatSoft Inc.
Tabachnick, B.G. and Fidell, L.S. (2001) Using multivariate statistics. 4th edition. Boston, MA: Allyn and Bacon.
Vanzolini, P.E. (2002) A second note on the geographical differentiation of Amphisbaena fuliginosa L., 1758 (Squamata, Amphisbaenidae), with a consideration of the forest refuge model of speciation. Anais da Academia Brasileira de Ciências 74, 609648.

Keywords

Evaluation of periotic–timpanic bone complex of Sotalia guianensis (Cetacea: Delphinidae) as tool in identification of geographic variations

  • Danilo Leal Arcoverde (a1), Renata Emin-Lima (a2), Alexandra Fernandes Costa (a2), Ana Paula Madeira Di Beneditto (a3), Salvatore Siciliano (a2) (a4), Leonardo Sena (a1), Ignacio Benites Moreno (a5) and José De Sousa E Silva (a2)...

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