Hostname: page-component-848d4c4894-75dct Total loading time: 0 Render date: 2024-05-22T15:43:16.107Z Has data issue: false hasContentIssue false

Individual identification and habitat use of the estuarine dolphin Sotalia guianensis (Cetacea: Delphinidae) in Cananéia, south-eastern Brazil, using video images

Published online by Cambridge University Press:  17 March 2008

L.V. de Oliveira*
Affiliation:
Instituto de Pesquisas Cananéia—IPeC, Rua Tristāo Lobo, 199, Centro Cananéia, SP, CEP, 11990-000, Brazil
E.L.A. Monteiro-Filho
Affiliation:
Instituto de Pesquisas Cananéia—IPeC, Rua Tristāo Lobo, 199, Centro Cananéia, SP, CEP, 11990-000, Brazil Universidade Federal do Paraná—UFPR, Centro Politécnico, Departamento de Zoologia, Laboratório de Biologia e Ecologia de Vertebrados. Caixa Postal 19020, Curitiba, PR, Cep: 81531-970, Brazil
*
Correspondence should be addressed to: L.V. de Oliveira, Instituto de Pesquisas Cananéia—IPeC, Universidade Federal do Paraná—UFPR, Centro Politécnico, Departamento de Zoologia, Laboratório de Biologia e Ecologia de Vertebrados, Caixa Postal 19020, Curitiba, PR, Cep: 81531-970, Brazil email: lisa.oli@uol.com.br

Abstract

Individual identification using Hi8 video images was tested on the population of estuarine dolphins, Sotalia guianensis that inhabit the Cananéia estuary, south-eastern Brazil. Between June 2001 and August 2002, 25 different dolphins were identified by nicks on the dorsal fin (80%) and by the association of cuts and scratches on the dorsal fin and the body's dorsal region (20%). The existent marks were used to create an identification key to ease the matching between dolphins. The animals were present on 100% of the sampled days, and some of them were repeatedly registered at the same sector in the area, suggesting that although they occupy an extensive area, they use it in an intended way. When compared to researches that used photographs to identify cetaceans, the video images showed some loss of information, nevertheless the analysis could be done without impairment of results, therefore this method proved to be efficient.

Type
Research Article
Copyright
Copyright © Marine Biological Association of the United Kingdom 2008

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Allen, J.M., Rosenbaum, H.C., Katona, S.K. and Clapham, P.J. (1994) Regional and sexual differences in fluke pigmentation of humpback whales (Megaptera novaeangliae) from the North Atlantic Ocean. Canadian Journal of Zoology 72, 274279.CrossRefGoogle Scholar
Ananias, S.M.A. (2004) Análise de recorrência e fidelidade espacial do boto-cinza, Sotalia fluviatilis, na enseada do Curral, Pipa/RN, através da aplicação da técnica de foto-identificação. Monography, Rio Grande do Norte, Brazil. Universidade Federal do Rio Grande do Norte. 32 p.Google Scholar
Ballance, L.T. (1990) Residence patterns, group organization, and surfacing associations of bottlenose dolphins in Kino Bay, Gulf of Califórnia, México. In Leatherwood, S. and Reeves, R.R. (eds), The Bottlenose Dolphin, San Diego: Academic Press Inc, pp. 267283.Google Scholar
Baird, W.B., Gorgone, A.M. and Webster, D.L. (2002) An examination of movements of bottlenose dolphins between islands in the Hawaiian island chain. Report prepared under Contract no. 40JGNF110270 to the Southwest Fisheries Science Center National Marine Fisheries Service. http://www.dal.ca/~whitelab/rub/HITursiopsinter-island.pdf. [Accessed 20 January 2005.]Google Scholar
Bigg, M.A., Olesiuk, P.F., Ellis, G.M., Ford, J.K.B. and Balcomb, K.C. (1990) Social organization and genealogy of resident killer whales (Orcinus orca) in the coastal waters of British Columbia and Washington State. Report of the International Whaling Commission (Special Issue), 12, 383405.Google Scholar
Bonin, C.A. (2001) Utilização de habitat pelo boto-cinza, Sotalia fluriatilis guianensis (Cetacea: Delphinidae), na porção norte do complexo estuarino da Baía de Paranaguá, PR. PhD Thesis, Universidade Federal do Paraná, Curitiba, PR, Brazil.Google Scholar
Bräger, S., Dawson, S.M., Slooten, E., Smith, S., Stone, S.G. and Yoshinaga, A. (2002) Site fidelity and along-shore range in Hector's dolphin, an endangered marine dolphin from New Zealand. Biological Conservation 108, 281287.Google Scholar
Burnell, S.R. and Bryden, M.M. (1997) Coastal residence periods and reproductive timing in southern right whales, Eubalaena australis. Journal of Zoology 241, 613621.CrossRefGoogle Scholar
Carlstrom, D. and Edelstam, C. (1946) Methods of marking reptiles for identification after recapture. Nature 158, 748749.Google Scholar
Christal, J., Whitehead, H. and Lettevall, E. (1998) Sperm whale social units: variation and change. Canadian Journal of Zoology 76, 14311440.Google Scholar
Correia, T.C.L.P. (1999) Estudo da dinâmica de uso do habitat da Baía de Sepetiba (RJ) pelo boto Sotalia fluviatilis (Cetacea, Delphinidae). MSc thesis, Universidade Federal Rural do Rio de Janeiro, Rio de Janeiro, Brazil.Google Scholar
Dalla Rosa, L., Secchi, E.R., Kinas, P.G., Santos, M.C.O., Martins, M.B., Zerbini, A.N. and Bethlem, C.B.P. (2001) Photo-identification of humpback whales, Megaptera novaeangliae, of the Antartic Peninsula: 1997/98 to 1999/2000. Memoirs of the Queensland Museum 47, 555561.Google Scholar
Darling, J.D. and Morowitz, H. (1986) Census of ‘Hawaiian’ humpback whales (Megaptera novaeangliae) by individual identification. Canadian Journal of Zoology 64, 105111.CrossRefGoogle Scholar
Flores, P.A.C. (1999) Preliminary results of a photoidentification study of the marine tucuxi, Sotalia fluviatilis, in southern Brazil. Marine Mammal Science 15, 840847.Google Scholar
Ford, J.K.B., Ellis, G.M. and Balcomb, K.C. (1994) Killer whales: the natural history and genealogy of Orcinus orca in British Columbia and Washington State. Vancouver: UBC Press and Seattle: University of Washington Press.Google Scholar
Fundação SOS Mata Atlântica (2004) UC's na área do pólo Lagamar. http://www.sosribeira.org.br/institucional/regiao/uc_lista.htm. [Accessed 3 March 2005.]Google Scholar
Geise, L., Gomes, N. and Cerqueira, R. (1999) Behaviour, habitat use and population size of Sotalia fluviatilis (Gervais, 1853) (Cetacea, Delphinidae) in the Cananéia Estuary region, São Paulo, Brazil. Revista Brasileira de Biologia 59, 183194.CrossRefGoogle Scholar
Gubbins, G. (2002) Use of home ranges by resident bottlenose dolphins (Tursiops truncatus) in a South Carolina estuary. Journal of Mammalogy 83, 178187.Google Scholar
Gunnlaugsson, T. and Sigurjónsson, J. (1990) A note on the problem of false positives in the use of natural marking data for abundance estimation. Report of the International Whaling Commission (Special Issue) 12, 143145.Google Scholar
Hardt, F.A.S. (2005) Padrões de residência do golfinho Sotalia guianensis (Cetácea, Delphinidae) na Baía de Babitonga, litoral norte de Santa Catarina, Brasil. MSc thesis. Universidade Federal do Paraná, Santa Catarina, Brazil. 104 p.Google Scholar
Hayes, A.J.S. (1999) Ocorrência e utilização de habitat da forma marinha do Tucuxi, Sotalia fluviatilis, na Praia de Iracema, Brasil, através de observações a partir de um ponto fixo. http://www.portalbiologico.hpg.ig.com.br/artigos/artigotucuxi.htm. [Accessed 3 March 2005.]Google Scholar
Hetzel, B. and Lodi, L. (1993) Baleias, botos e golfinhos—Guia de identificação para o Brasil. Rio de Janeiro: Nova Franteira.Google Scholar
Hooker, S.K., Whitehead, H., Gowans, S. and Baird, R.W. (2002) Fluctuations in distribution and patterns of individual range use of northern bottlenose dolphins. Marine Ecology Progress Series 225, 287297.Google Scholar
IUCN (2004) Red List. http://www.redlist.org. [Accessed 16 May 2005.]Google Scholar
Jesus, A.H. (2004) Perfil comportamental do boto-cinza, Sotalia fluviatilis (Gervais, 1853), (Delphinidae, Cetácea), no litoral sul do Rio Grande do Norte, Brazil. MSc thesis. Universidade Federal do Rio Grande do Norte, Rio Grande do Norte, Brazil. 70 p.Google Scholar
Kreho, A., Kehtarnavaz, N., Araabi, B., Hilman, G., Würsig, B. and Weller, D. (1999) Assisting manual dolphin identification by computer extraction of dorsal ratio. Annals of Biomedical Engineering 27, 830838.CrossRefGoogle ScholarPubMed
Monteiro-Filho, E.L.A. (1991) Comportamento de caça e repertório acústico do golfinho S. brasiliensis na região de Cananéia, S.P. Campinas, São Paulo, Brazil. PhD thesis, UNICAMP. pp. 99.Google Scholar
de Oliveira, L.V. (2006) Videoidentificação na investigação dos movimentos dos botos-cinza, Sotalia guianensis (Cetácea, Delphinidae) entre as populações presentes nas regiões de Cananéia (SP) e Ilha das Peças (PR). MSc thesis. Universidade Federal do Paraná, Paraná, Brazil, 79 p.Google Scholar
Pizzorno, J.L.A. (1999) Estimativa populacional do boto-cinza, Sotalia fluviatilis, na Baía de Guanabara, por meio de catálogo de fotoidentificação. Seropédica, Rio de Janeiro, Brazil. MSc thesis, Universidade Federal Rural do Rio de Janeiro, Rio de Janeiro, Brazil. pp. 83.Google Scholar
Rossi-Santos, M.R., Wedekin, L.L. and Monteiro-Filho, E.L.A. (2007) Residence and site fidelity of Sotalia guianensis in Caravelas River Estuary, eastern Brazil. Journal of the Marine Biological Association of the United Kingdom 87, 207212.CrossRefGoogle Scholar
Sanino, G.P. and Yáñez, J.L. (2001) Nueva Técnica de Video Identificación de Tamaño Poblacional em Cetáceos, Aplicada en Delfines Nariz de Botella. Tursiops truncatus, de Isla Choros, IV Región de Chile. Boletin del Museo Nacional de Historia Natural, Chile 50, 3763.Google Scholar
Santos, M.C.O. (1999) Novas informações sobre cetáceos no litoral sul de São Paulo e norte do Paraná com base em estudos sobre encalhes e na aplicação da técnica de foto-identificação individual de Sotalia fluviatilis (Cetacea, Delphinidae). MSc thesis, Universidade de São Paulo, São Paulo, Brazil. pp. 114.Google Scholar
Sargeant, B.L., Mann, J., Berggren, P. and Krützen, M. (2005) Specialization and development of beach hunting, a rare foraging behavior, by wild bottlenose dolphins (Tursiops sp.). Canadian Journal of Zoology 83, 14001410.CrossRefGoogle Scholar
Schaeffer-Novelli, Y., Mesquita, H.S.L. and Citrón-Molero, G. (1990) The Cananéia Lagoon Estuarine System, São Paulo, Brazil. Estuaries 13, 193203.Google Scholar
Scott, E.M., Mann, J., Watson-Capps, J.J., Sargeant, B.L. and Connor, R.C. (2005) Aggression in bottlenose dolphins: evidence for sexual coercion, male–male competition, and female tolerance through analysis of tooth-rate marks and behaviour. Behaviour 142, 2144.Google Scholar
Simão, S.M., Pizzorno, J.L., 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, 3139.Google Scholar
Simões-Lopes, P.C. and Fabian, M.E. (1999) Residence patterns and site fidelity in bottlenose dolphins, Tursiops truncatus (Montagu) (Cetacean, Delphinidae) off southern Brazil. Revista Brasileira de Zoologia 16, 10171024.Google Scholar
Slooten, E., Dawson, S.M. and Whitehead, H. (1993) Associations among photographically identified Hector's dolphins. Canadian Journal of Zoology 71, 23112318.Google Scholar
Weigle, B. (1990) Abundance, distribution and movements of bottlenose dolphin (Tursiops truncatus) in lower Tampa Bay, Florida. Report of the International Whaling Commission, (Special Issue) 12, 195201.Google 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) Dolphin societies: discoveries and puzzles, Berkeley: University of California Press, pp. 199223.Google Scholar
Wilson, B., Hammond, P.S. and Thompson, P.M. (1999) Estimating size and assessing trends in a coastal bottlenose dolphin population. Ecological Applications 9, 288300.Google Scholar
Wilson, B., Thompson, P.M. and Hammond, P.S. (1997) Habitat use by bottlenose dolphins: seasonal distribution and stratified movement patterns in the Moray Firth, Scotland. Journal of Applied Ecology 34, 13651374.CrossRefGoogle Scholar
Würsig, B. (1978) Occurrence and Group Organization of Atlantic Bottlenose porpoises (Tursiops truncatus) in an Argentine Bay. Biological Bulletin. Marine Biological Laboratory, Woods Hole 154, 348359.Google Scholar
Wursig, B. and Jefferson, T.A. (1990). Methods of photo-identification for small cetaceans. Report of the International Whaling Commission, (Special Issue) 12, 4349.Google Scholar
Würsig, B. and Würsig, M. (1977) The photographoc determination of group size, composition and stability of coastal porpoises (Tursiops truncatus). Science 198, 755756.Google Scholar
Zeh, J., Poole, D., Miller, G., Koski, W., Baraff, L. and Rugh, D. (2002) Survival of Bowhead whales, Balaena mysticetus, estimated from 1981–1998 photoidentification data. Biometrics 58, 832840.Google Scholar