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Degrees of residence of Guiana dolphins (Sotalia guianensis) in Ilha Grande Bay, south-eastern Brazil: a preliminary assessment

Published online by Cambridge University Press:  21 September 2010

Mariana de A. Espécie ,
Rodrigo H.O. Tardin  and
Sheila M. Simão
Mariana de A. Espécie*
Affiliation:
Programa de Pós-Graduação em Biologia Animal, Universidade Federal Rural do Rio de Janeiro, Rodovia BR 465, km 7, Seropédica, Rio de Janeiro, 23890-000, Brazil Laboratório de Bioacústica e Ecologia de Cetáceos, Departamento de Ciências Ambientais, Universidade Federal Rural do Rio de Janeiro, Rodovia BR 465, km 7 Seropédica, Rio de Janeiro, 23890-000, Brazil
Rodrigo H.O. Tardin
Affiliation:
Programa de Pós-Graduação em Biologia Animal, Universidade Federal Rural do Rio de Janeiro, Rodovia BR 465, km 7, Seropédica, Rio de Janeiro, 23890-000, Brazil Laboratório de Bioacústica e Ecologia de Cetáceos, Departamento de Ciências Ambientais, Universidade Federal Rural do Rio de Janeiro, Rodovia BR 465, km 7 Seropédica, Rio de Janeiro, 23890-000, Brazil
Sheila M. Simão
Affiliation:
Laboratório de Bioacústica e Ecologia de Cetáceos, Departamento de Ciências Ambientais, Universidade Federal Rural do Rio de Janeiro, Rodovia BR 465, km 7 Seropédica, Rio de Janeiro, 23890-000, Brazil
*
Correspondence should be addressed to: M.A. Espécie, Laboratório de Bioacústica e Ecologia de Cetáceos, Departamento de Ciências Ambientais, Universidade Federal Rural do Rio de Janeiro, Rodovia BR 465, km 7 Seropédica Rio de Janeiro, 23890-000, Brazil email: [email protected]
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Abstract

The Guiana dolphin, Sotalia guianensis, is a small delphinid found in coastal areas from northern Honduras to southern Brazil. Little is known about the ecology of this species in several areas of its geographical distribution. In this paper, we present new data about the residency of Guiana dolphins in Ilha Grande Bay, south-eastern Brazil. Boat surveys were conducted at the study area from May 2007 to March 2008. Applying the photo-identification technique, we took pictures of dolphins' dorsal fins, looking for natural markings on them. A total of 17,969 photographs were taken, from which was created a databank of 462 distinct dolphins. Individuals showed different degrees of residency in the bay. More than 50% of the catalogued dolphins were considered non-residents and/or showed a low degree of residence. The average interval between resightings was 35 ± 27.4 days. Animals without markings (calves and juveniles) accounted for 45% (N = 2917) of photographs taken. These results indicate that this population has a fluid structure including different individuals over time. We suggest a possible relationship between the presence of some individuals and local resource availability, such as prey and protected areas.

Keywords

Guiana dolphinphoto-identificationdegrees of residenceIlha Grande Bay
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 90 , Special Issue 8: Marine Mammals , December 2010 , pp. 1633 - 1639
Copyright
Copyright © Marine Biological Association of the United Kingdom 2010

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References

REFERENCES

Araújo, F.G., Cruz-Filho, A.G., Azevêdo, M.C.C. and Santos, A.C.A. (1998) Estrutura da comunidade de peixes demersais da Baía de Sepetiba, RJ. Revista Brasileira de Biologia 58, 417–430.CrossRefGoogle Scholar
Azevedo, A.F. (2005) Comportamento e uso do espaço por Sotalia guianensis (Cetacea, Delphinidae) na Baía de Guanabara (RJ) e variação geográfica dos assobios da espécie ao longo da costa do Brasil. DSc thesis. Universidade Estadual do Rio de Janeiro, Rio de Janeiro, Brazil.Google Scholar
Azevedo, A.F., Lailson-Brito, J. Jr, Cunha, H.A. and Van Sluys, M. (2004) Site fidelity of marine tucuxis (Sotalia fluviatilis) in Guanabara Bay, south-eastern Brazil. Journal of Cetacean Research and Management 6, 265–268.CrossRefGoogle Scholar
Ballance, L.T. (1990) Residence patterns, group organization and surface association of bottlenose dolphins in Kino Bay, Gulf of California, Mexico. In Leatherwood, S. and Reeves, R.R. (eds) The bottlenose dolphin. San Diego: Academic Press, pp. 267–284.CrossRefGoogle Scholar
Ballance, L.T. (1992) Habitat use patterns and ranges of the bottlenose dolphin in the Gulf of California, Mexico. Marine Mammal Science 8, 262–274.CrossRefGoogle Scholar
Creed, J.C., Absalão, R.S., Brasil, A.C.S., Figueiredo, M.A.O., Ferreira, C.E.L., Pires, D.O., Serejo, C.S. and Ventura, C.R.R. (2007) Sumário executivo. In Creed, J.C., Pires, D.O. and Figueiredo, M.A.O. (eds) Biodiversidade marinha da Baía da Ilha Grande. Brasília: Ministério do Meio Ambiente, pp. 19–39.Google Scholar
Espécie, M.A., Kiatkowski, D.A., Tardin, R.H.O. and Simão, S.M. (2009) Abundance estimates of Guiana dolphins (Sotalia guianensis) in Ilha Grande Bay, Brazil. In Nascimento, E. (ed.) Anais do III Congresso Latino Americano de Ecologia, Hotel Guanabara, São Lourenço, 10–13 September 2009. Ecologia marinha. São Paulo: Imprensa da Universidade de São Paulo, pp. 1–3.Google Scholar
Flores, P.A.C. (1999) Preliminary results of a photo-identification study of the marine tucuxi Sotalia fluviatilis in southern Brazil. Marine Mammal Science 15, 840–847.CrossRefGoogle Scholar
Flores, P.A.C. and Bazzalo, M. (2004) Home range and movement patterns of the marine tucuxi, Sotalia fluviatilis, in Baía Norte, southern Brazil. Latin American Journal of Aquatic Mammals 3, 37–52.CrossRefGoogle Scholar
Gunnlaugsson, T. and Sigurjónsson, J. (1990) A note on the problem of false positives in the use of natural marking data and abundance estimation. In Hammond, P.S., Mizroch, S.A. and Donovan, G.P. (eds) Individual recognition of cetaceans: use of photoidentification and other techniques to estimate population parameters. Cambridge: International Whaling Commission, Special Issue 12, pp. 143–145.Google Scholar
Hammond, P.S., Mizroch, S.A. and Donovan, G.P. (1990) Individual recognition of cetaceans: use of photoidentification and other techniques to estimate population parameters. Special Issue 12. Cambridge: International Whaling Commission.Google Scholar
Lodi, L. (2003a) Seleção e uso de habitat pelo boto-cinza, Sotalia guianensis (van Bénéden, 1864) (Cetacea, Delphinidae), na Baía de Paraty, estado do Rio de Janeiro. Bioikos 17, 5–20.Google Scholar
Lodi, L. (2003b) Tamanho e composição de grupo dos botos-cinza, Sotalia guianensis (Van Bénéden, 1864) (Cetacea, Delphinidae), na Baía de Paraty, Rio de Janeiro, Brasil. Atlântica 25, 135–146.Google Scholar
Lodi, L. and Hetzel, B. (1998) Grandes agregações do boto-cinza (Sotalia fluviatilis) na Baía da Ilha Grande, Rio de Janeiro. Bioikos 12, 26–30.Google Scholar
Mahiques, M.M. (1987) Considerações sobre os sedimentos de superfície de fundo da Baía da Ilha Grande, estado do Rio de Janeiro. MSc dissertation. Universidade de São Paulo, São Paulo, Brazil.Google Scholar
Mazzoil, M., McCullock, S.D., Defran, R.H. and Murdoch, E.M. (2004) Use of digital photography and analysis of dorsal fins for photoidentification of bottlenose dolphin. Aquatic Mammals 30, 209–210.CrossRefGoogle Scholar
Mazzoil, M., Reif, J.S., Youngbluth, M., Murdoch, E., Bechdel, S.E., Howells, E., McCullock, S.D., Hansen, L.J. and Bossart, G.D. (2008) Home ranges of bottlenose dolphins (Tursiops truncatus) in the Indian River Lagoon, Florida: environmental correlates and implications for management strategies. EcoHealth 5, 278–288.CrossRefGoogle ScholarPubMed
Nery, M.F. (2008) Fidelidade de habitat e estimativa populacional de Sotalia guianensis (Cetacea, Delphinidae) da Baía de Sepetiba—RJ, por meio da técnica de marcação-recaptura. MSc dissertation. Universidade Federal Rural do Rio de Janeiro, Seropédica, Brazil.Google Scholar
Nery, M.F., Espécie, M.A. and Simão, S.M. (2008) Site fidelity of Sotalia guianensis (Cetacea, Delphinidae) in Sepetiba Bay, Rio de Janeiro, Brazil. Revista Brasileira de Zoologia 25, 182–187.CrossRefGoogle Scholar
Nogara, P.J. (2000) Caracterização dos ambientes marinhos da Área de Proteção Ambiental de Cairuçu—Município de Paraty—RJ. Fundação SOS Mata Atlântica (Technical report), 83 pp.Google Scholar
Parra, G.J., Corkeron, P.J. and Marsh, H. (2006) Population sizes, site fidelity and residence patterns of Australian snubfin and Indo-Pacific humpback dolphins: implications for conservation. Biological Conservation 129, 167–180.CrossRefGoogle Scholar
Pizzorno, J.L.A. (1999) Estimativa populacional do boto-cinza, Sotalia fluviatilis, na Baía de Guanabara, por meio de fotoidentificação. MSc dissertation. Universidade Federal Rural do Rio de Janeiro, Seropédica, Brazil.Google Scholar
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, 207–212.CrossRefGoogle Scholar
Santos, M.C.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, 1049–1052.CrossRefGoogle Scholar
Scott, M.D., Wells, R.S. and Irvine, A.B. (1990) A long term study of bottlenose dolphins on the west coast of Florida. In Leatherwood, S. and Reeves, R.R. (eds) The bottlenose dolphin. San Diego: Academic Press, pp. 235–244.CrossRefGoogle Scholar
Signorini, S.R. (1980) A study of the circulation in bay of Ilha Grande and bay of Sepetiba part I, an assessment of the tidally and wind-driven circulation using a finite element numerical model. Boletim do Instituto Oceanográfico 29, 41–55.CrossRefGoogle Scholar
Simão, S.M., Pizzorno, J.L.A., Perry, V.N. and Siciliano, S. (2000) Aplicação da técnica de fotoidentificação do boto-cinza, Sotalia fluviatilis (Cetacea, Delphinidae), da Baía de Sepetiba. Floresta e Ambiente 7, 31–39.Google Scholar
Stevick, P.T., Palsboll, P.J., Smith, T.D., Bravington, M.V. and Hammond, P.S. (2001) Errors in identification using natural markings: rates, sources, and effects on capture–recapture estimates of abundance. Canadian Journal of Fisheries and Aquaculture Science 58, 1861–1870.Google Scholar
Warkentin, I.G. and Hernandez, D. (1996) The conservation implications of site fidelity: a case-study involving nearctic–neotropical migrant songbirds wintering a Costa Rican mangrove. Biological Conservation 77, 143–150.CrossRefGoogle Scholar
Wedekin, L.L., Daura-Jorge, F.G., Piacentini, V.Q. and Simões-Lopes, P.C. (2007) Seasonal variations in spatial usage by the estuarine dolphin, Sotalia guianensis (van Bénéden, 1864) (Cetacea; Delphinidae) at its southern limit of distribution. Brazilian Journal of Biology 67, 1–8.CrossRefGoogle Scholar
Wells, R.S. (1991) The role of long-term study in understanding the social structure of a bottlenose dolphin community. In Pryor, K. and Norris, K.S. (eds) Dolphins societies: discoveries and puzzles. Berkeley: University of California Press, pp. 199–225.Google Scholar
Wells, R.S. and Scott, M.D. (1990) Estimating bottlenose dolphin population parameters from individual identification and capture–release techniques. In Hammond, P.S., Mizroch, S.A. and Donovan, G.P. (eds) Individual recognition of cetaceans: use of photoidentification and other techniques to estimate population parameters. Cambridge: International Whaling Commission, Special Issue 12, pp. 470–416.Google Scholar
Wells, R.S., Scott, M.D. and Irvine, A.B. (1987) The social structure of free-ranging bottlenose dolphins. In Genoways, H.H. (ed.) Current mammalogy. New York: Plenum Press, pp. 247–305.CrossRefGoogle Scholar
Williams, T.M., Haun, J., Davis, R.W., Fuiman, L.A. and Kohin, S. (2001) A killer appetite: metabolic consequences of carnivory in marine mammals. Comparative Biochemistry and Physiology Part A 129, 785–796.CrossRefGoogle ScholarPubMed
Würsig, B. and Würsig, M. (1977) The photographic determination of group size, composition and stability of coastal porpoises (Tursiops truncatus). Science 198, 755–756.CrossRefGoogle Scholar