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Habitat preferences of Guiana dolphins, Sotalia guianensis (Cetacea: Delphinidae), in Norte Bay, southern Brazil

Published online by Cambridge University Press:  04 October 2010

Leonardo L. Wedekin ,
Fábio G. Daura-Jorge  and
Paulo C. Simões-Lopes
Leonardo L. Wedekin*
Affiliation:
Laboratório de Mamíferos Aquáticos, Departamento de Ecologia e Zoologia, Universidade Federal de Santa Catarina, Campus Universitário, s/n, 88040-970, Florianópolis–SC–Brazil
Fábio G. Daura-Jorge
Affiliation:
Laboratório de Mamíferos Aquáticos, Departamento de Ecologia e Zoologia, Universidade Federal de Santa Catarina, Campus Universitário, s/n, 88040-970, Florianópolis–SC–Brazil
Paulo C. Simões-Lopes
Affiliation:
Laboratório de Mamíferos Aquáticos, Departamento de Ecologia e Zoologia, Universidade Federal de Santa Catarina, Campus Universitário, s/n, 88040-970, Florianópolis–SC–Brazil
*
Correspondence should be addressed to: L.L. Wedekin, Instituto Baleia Jubarte, Rua Barão do Rio Branco, 26, Caravelas–BA–Brazil, 45900-000 email: leonardo.wedekin@baleiajubarte.org.br
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Abstract

Habitat preference and spatial distribution of Guiana dolphins (Sotalia guianensis) in Norte Bay, southern Brazil, was studied from 2001 to 2005. Boat surveys (N = 91) were made to evaluate the spatial distribution of the dolphins. Seven habitat variables were integrated into a geographical information system, and habitat preference was tested using the ‘Neu method’ and a habitat index. The Guiana dolphins did not use all habitat types in the same proportion as were available. Areas used more intensively included, in order of importance: (1) areas with a steep sloping sea-floor; (2) areas further from urban areas; (3) areas further from mangroves; (4) areas near the mouth of the bay; (5) shallow water areas; (6) areas of clayey-silt sediments; and (7) areas close to shore. From 2001 to 2005 there was a shift in spatial distribution and habitat use by the dolphins. The low frequency of use of areas close to urban encroachment and its related impacts to the marine environment raises concern about the coastal habitat destruction. The Guiana dolphin may be considered a habitat specialist, despite its wide latitudinal distribution in the western Atlantic Ocean. The ecological niche of the species may be defined by a narrow strip of shallow coastal waters (mostly < 30 m) bordering the coastline. The shift in the spatial use was probably linked with changes in the abundance of important prey of the species and possibly was caused by the collapse of a fish stock in the study area region. Different habitats may favour different assemblages of prey and consequently different foraging strategies by the dolphins. Human-related habitat alterations throughout the range of this species are likely to affect dolphins' ecology in many ways and, thus, must be evaluated and mitigated to conserve their critical habitats.

Keywords

behaviourhabitat usespatial usehabitat selectionbathymetrybays
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 90 , Special Issue 8: Marine Mammals , December 2010 , pp. 1561 - 1570
Copyright
Copyright © Marine Biological Association of the United Kingdom 2010

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References

REFERENCES

Alldredge, J.R. and Ratti, J.T. (1986) Comparison of some statistical techniques for analysis of resource selection. Journal of Wildlife Management 50, 157–165.CrossRefGoogle Scholar
Allen, M.C., Read, A.J., Gaudet, J. and Sayigh, L.S. (2001) Fine-scale habitat selection of foraging bottlenose dolphins Tursiops truncatus near Clearwater, Florida. Marine Ecology Progress Series 222, 253–264.Google Scholar
Atkins, S., Pillay, N. and Peddemors, V.M. (2004) Spatial distribution of Indo-Pacific humpback dolphins (Sousa chinensis) at Richards Bay, South Africa: environmental influences and behavioral patterns. Aquatic Mammals 30, 84–93.CrossRefGoogle Scholar
Azevedo, A.F., Oliveira, A.M., Viana, S.C. and Van Sluys, M. (2007) Habitat use by marine tucuxis (Sotalia guianensis) (Cetacea: Delphinidae) in Guanabara Bay, south-eastern Brazil. Journal of the Marine Biological Association of the United Kingdom 87, 201–205.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.Google Scholar
Baumgartner, M.F. (1997) The distribution of Risso's dolphin (Grampus griseus) with respect to the physiography of the northern Gulf of Mexico. Marine Mammal Science 13, 614–638.CrossRefGoogle Scholar
Bonin, C. (2001) Utilização de hábitat pelo boto-cinza, Sotalia fluviatilis guianensis (Cetacea: Delphinidae), na porção norte do complexo estuarino da Baía de Paranaguá, PR. MSc thesis. Universidade Federal do Paraná, Curitiba, Brazil.Google Scholar
Borobia, M., Siciliano, S., Lodi, L. and Hoek, W. (1991) Distribution of the South American dolphin Sotalia fluviatilis. Canadian Journal of Zoology 69, 1025–1038.CrossRefGoogle Scholar
Byers, C.R., Steinhorst, R.K. and Krausman, P.R. (1984) Clarification of a technique for analysis of utilization–availability data. Journal of Wildlife Management 48, 1050–1053.CrossRefGoogle Scholar
Cerutti, R.L. (1996) Contribuição ao conhecimento da poluição doméstica na Baía Norte, área da Grande Florianópolis, SC. MSc thesis. Universidade Federal de Santa Catarina, Florianópolis, Brazil.Google Scholar
Clemmons, J.R. and Buchholz, R. (1997) Linking conservation and behaviour. In Clemmons, J.R. and Buchholz, R. (eds) Behavioral approaches to conservation in the wild. Cambridge: Cambridge University Press, pp. 3–22.Google Scholar
Cremer, M.J. (2000) Ecologia e Conservação do Golfinho Sotalia fluviatilis guianensis (Cetacea: Delphinidae) na Baía de Babitonga, Litoral Norte de Santa Catarina. São Carlos, SP. MSc thesis. Universidade Federal de São Carlos, São Carlos, Brazil.Google Scholar
Cremer, M.J., Hardt, F.A.S., Tonello, A.J. Jr, Simões-Lopes, P.C. and Pires, J.S.R. (2004) Core area changes in Sotalia guianensis (Cetacea, Delphinidae) population in Babitonga Bay, Santa Catarina. Revista Univille 9, 12–16.Google Scholar
Daura-Jorge, F.G. (2007) A dinâmica predador-presa e o comportamento do boto-cinza, Sotalia guianensis (Cetacea, Delphinidae), na Baía Norte de Santa Catarina, sul do Brasil. MSc thesis. Universidade Federal do Paraná, Curitiba, Brazil.Google Scholar
Daura-Jorge, F.G., Wedekin, L.L. and Hanazaki, N. (2007) A pesca artesanal no litoral centro-norte do Estado de Santa Catarina. Instituto Carijós, Occasional Publication, 55 pp.Google Scholar
Daura-Jorge, F.G., Wedekin, L.L., Piacentini, V.Q. and Simões-Lopes, P.C. (2005) Seasonal and daily patterns of group size, cohesion and activity of the estuarine dolphin, Sotalia guianensis (P.J. van Bénéden) (Cetacea, Delphinidae), in southern Brazil. Revista Brasileira de Zoologia 22, 1014–1021.CrossRefGoogle Scholar
Daura-Jorge, F.G., Wedekin, L.L. and Simões-Lopes, P.C. (2004) Variação sazonal da intensidade dos deslocamentos do boto-cinza, Sotalia guianensis (Cetacea: Delphinidae), na Baía Norte da Ilha de Santa Catarina. Biotemas 17, 203–216.Google Scholar
Daura-Jorge, F.G., Wedekin, L.L. and Simões-Lopes, P.C. (in press) Feeding habits of the Guiana dolphin, Sotalia guianensis (Cetacea, Delphinidae), in Norte Bay, southern Brazil. Scientia Marina.Google Scholar
Davis, R.W., Fargion, G.S., May, N., Leming, T.D., Baumgartner, M., Evans, W.E., Hansen, L.J. and Mullin, K. (1998) Physical habitat of cetaceans along the continental slope in the north-central and western Gulf of Mexico. Marine Mammal Science 14, 490–507.Google Scholar
DHN (1977) Carta Náutica No. 1903: Canal Norte de Santa Catarina, 2nd edition. Diretoria de Hidrografia e Navegação, Marinha do Brasil, Brazil.Google Scholar
Di Beneditto, A.P.M., Ramos, R.M.A. and Lima, N.R.W. (2001) Sightings of Pontoporia blainvillei (Gervais & d'Orbigny, 1844) and Sotalia fluviatilis (Gervais, 1853) (Cetácea) in south-eastern Brazil. Brazilian Archives of Biology and Technology 44, 291–296.Google Scholar
Edwards, H.H. and Schnell, G.D. (2001a) Body length, swimming speed, dive duration, and coloration of the dolphin Sotalia fluviatilis (Tucuxi) in Nicaragua. Caribbean Journal of Science 37, 271–298.Google Scholar
Edwards, H.H. and Schnell, G.D. (2001b) Status and ecology of Sotalia fluviatilis in the Cayos Miskito Reserve, Nicaragua. Marine Mammal Science 17, 445–472.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 ranges and movement patterns of the marine tucuxi dolphin, Sotalia fluviatilis, in Baía Norte, southern Brazil. Latin American Journal of Aquatic Mammals 3, 37–52.CrossRefGoogle Scholar
Garshelis, D.L. (2000) Delusions in habitat evaluation: measuring use, selection, and importance. In Boitani, L. and Fuller, T.K. (eds) Research techniques in animal ecology: controversies and consequences. New York: Columbia University Press, pp. 111–164.Google Scholar
Gill, J.A. and Sutherland, W.J. (2000) Predicting the consequences of human disturbance from behavioural decisions. In Gosling, L.M. and Sutherland, W.J. (eds) Behaviour and conservation. Cambridge: Cambridge University Press, pp. 51–64.Google Scholar
Harris, S., Cresswell, W.J., Forde, P.G., Trewhella, W.J., Woollard, T. and Wray, S. (1990) Home-range analysis using radio-tracking data—a review of problems and techniques particularly as applied to the study of mammals. Mammal Review 20, 97–123.CrossRefGoogle Scholar
Hastie, G.D., Wilson, B. and Thompson, P.M. (2003) Fine-scale habitat selection by coastal bottlenose dolphins: application of a new land-based video-montage technique. Canadian Journal of Zoology 81, 469–478.CrossRefGoogle Scholar
Hastie, G.D., Wilson, B., Wilson, L.J., Parsons, K.M. and Thompson, P.M. (2004) Functional mechanisms underlying cetacean distribution patterns: hotspots for bottlenose dolphins are linked to foraging. Marine Biology 144, 397–403.Google Scholar
Hooge, P.N. and Eichenlaub, B. (1997) Animal movement extension to ArcView (version 1.1). Anchorage, Alaska: Alaska Biological Science Center, United States Geological Survey.Google Scholar
Ingram, S.N. and Rogan, E. (2002) Identifying critical areas and habitat preference of bottlenose dolphins Tursiops truncatus. Marine Ecology Progress Series 244, 247–255.Google Scholar
Karczmarski, L., Cockcroft, V.G. and McLachlan, A. (2000) Habitat-use and preferences of Indo-Pacific humpback dolphins Souza chinensis in Algoa Bay, South Africa. Marine Mammal Science 16, 65–79.CrossRefGoogle Scholar
Knoppers, B., Ekau, W., Figueiredo, A.G. Jr and Soares-Gomes, A. (2002) Zona costeira e plataforma continental do Brasil. In Pereira, R.C. and Soares-Gomes, A. (eds) Biologia Marinha. Rio de Janeiro: Editora Interciência, pp. 353–361.Google Scholar
Leal, P.C., Nunes, M.G., Oliveira, M.S.C., Oliveira, J.S., Gré, J.C.R. and Bonetti-Filho, J. (1999) Aspectos texturais da Baía Norte, costa noroeste da Ilha de Santa Catarina–SC, Brasil. Proceedings of the VII Congresso da ABEQUA, 3–9 September 1999, Porto Alegre, Brazil.Google Scholar
Lodi, L. (2003) Seleção e uso do hábitat 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
Löhmus, A. (2003) Are certain habitats better every year? A review and a case study on birds of prey. Ecography 26, 545–552.Google Scholar
Mendes, S., Turrell, W., Lütkebohle, T. and Thompson, P. (2002) Influence of the tidal cycle and a tidal intrusion front on the spatio-temporal distribution of coastal bottlenose dolphins. Marine Ecology Progress Series 239, 221–229.CrossRefGoogle Scholar
Melo, E., Martins, R.P. and Franco, D. (1997) Standing wave tide at Florianópolis Bay (Brazil) and its influence on bay pollution. Proceedings of the BORDOMER 97–Coastal Environment Management and Conservation, IFREMER, Bordeaux, France, pp. 143–151.Google Scholar
Morris, D.W. (1987) Ecological scale and habitat use. Ecology 68, 362–369.Google Scholar
Neu, C.W., Byers, C.R. and Peek, J.M. (1974) A technique for analysis of utilization–availability data. Journal of Wildlife Management 38, 541–545.Google Scholar
Parra, G., Schick, R. and Corkeron, P.J. (2006) Spatial distribution and environmental correlates of Australian snubfin and Indo-Pacific humpback dolphins. Ecography 29, 1–11.Google Scholar
Rooney, S.M., Wolfe, A. and Hayden, T.J. (1998) Autocorrelated data in telemetry studies: time to independence and the problem of behavioural effects. Mammal Review 28, 89–98.CrossRefGoogle Scholar
Rosas, F.C.W., Barreto, A.S. and Monteiro-Filho, E.L.A. (2003) Age and growth of the estuarine dolphin (Sotalia guianensis) (Cetacea, Delphinidae) on the Paraná coast, southern Brazil. Fisheries Bulletin 101, 377–383.Google Scholar
Rossi-Santos, M.R. (2006) Ecologia comportamental do boto-cinza, Sotalia guianensis (van Bénéden, 1874) (Cetacea: Delphinidae), na região extremo sul do Estado da Bahia, Nordeste do Brasil. MSc thesis. Universidade Federal do Paraná, Curitiba, Brazil.Google Scholar
Rossi-Santos, M.R. and Flores, P.A.C. (2009) Feeding strategies of the Guiana dolphin Sotalia guianensis in the North Bay, southern Brazil. Open Marine Biology Journal 3, 70–76.Google Scholar
Rossi-Santos, M.R., Wedekin, L.L. and Sousa-Lima, R.S. (2006) Distribution and habitat use of small cetaceans in the coast of the Abrolhos Bank, eastern Brazil. Latin American Journal of Aquatic Mammals 5, 23–28.Google Scholar
Sasekumar, A., Chong, V.C., Leh, M.U. and d'Cruz, R. (1992) Mangrove as a habitat for fish and prawns. Hydrobiology 247, 195–207.Google Scholar
Selzer, L.A. and Payne, P.M. (1988) The distribution of white-sided (Lagenorhynchus acutus) and common dolphins (Delphinus delphis) vs. environmental features of the continental shelf of the northeastern United States. Marine Mammal Science 4, 141–153.CrossRefGoogle Scholar
Shane, S.H. (1990) Behavior and ecology of the bottlenose dolphin at Sanibel Island, Florida. In Leatherwood, S. and Reeves, R.R. (eds) The bottlenose dolphin. San Diego: Academic Press, pp. 245–265.CrossRefGoogle Scholar
Shepard, F.P. (1954) Nomenclature based on sand silt–clay ratios. Journal of Sedimentary Petrology 9, 62–76.Google Scholar
Silva, V.M. and Best, R.C. (1996) Sotalia fluviatilis. Mammalian Species 527, 1–7.Google Scholar
Simões-Lopes, P.C. (1988) Ocorrência de uma população de Sotalia fluviatilis Gervais, 1853, (Cetacea, Delphinidae) no limite sul de sua distribuição, Santa Catarina, Brasil. Biotemas 1, 57–62.Google Scholar
Stickel, L.F. (1954) A comparison of certain methods of measuring ranges of small mammals. Journal of Mammalogy 35, 1–15.Google Scholar
Swihart, R.K. and Slade, N.A. (1985) Testing for independence of observations in animal movement. Ecology 66, 1176–1184.Google Scholar
Szpilman, M. (2000) Peixes Marinhos do Brasil: guia prático de identificação. Rio de Janeiro: Instituto Ecológico Aqualung and MAUAD Editora.Google Scholar
Thomas, D.L. and Taylor, E.J. (1990) Study designs and tests for comparing resource use and availability. Journal of Wildlife Management 54, 322–330.Google Scholar
Wedekin, L.L., Da-Ré, M.A., Daura-Jorge, F.G. and Simões-Lopes, P.C. (2005) O uso de um modelo conceitual para descrever o cenário de conservação do boto-cinza na Baía Norte, Sul do Brasil. Natureza & Conservação 3, 59–67.Google 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 (Cetacea, Delphinidae) at its southern limit of distribution. Brazilian Journal of Biology 67, 1–8.Google Scholar
Wedekin, L.L., Daura-Jorge, F.G. and Simões-Lopes, P.C. (2004) An aggressive interaction between bottlenose dolphins (Tursiops truncatus) and estuarine dolphins (Sotalia guianensis) in southern Brazil. Aquatic Mammals 30, 391–397.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, 1365–1374.Google Scholar
Worton, B.J. (1989) Kernel methods for estimating the utilization distribution in home-range studies. Ecology 70, 164–168.Google Scholar