Home ranges of Guiana dolphins (Sotalia guianensis) (Cetacea: Delphinidae) in the Cananeia estuary, Brazil

dc.contributorUniversidade Estadual Paulista (Unesp)
dc.contributorUniv Buenos Aires
dc.contributorICMBio
dc.creatorFaria Oshima, Julia Emi de [UNESP]
dc.creatorOliveira Santos, Marcos Cesar de [UNESP]
dc.creatorBazzalo, Mariel
dc.creatorCarvalho Flores, Paulo Andre de
dc.creatorPupim, Fabiano do Nascimento [UNESP]
dc.date2015-03-18T15:54:12Z
dc.date2015-03-18T15:54:12Z
dc.date2010-12-01
dc.date.accessioned2023-09-12T02:59:46Z
dc.date.available2023-09-12T02:59:46Z
dc.identifierhttp://dx.doi.org/10.1017/S0025315410001311
dc.identifierJournal Of The Marine Biological Association Of The United Kingdom. New York: Cambridge Univ Press, v. 90, n. 8, p. 1641-1647, 2010.
dc.identifier0025-3154
dc.identifierhttp://hdl.handle.net/11449/116816
dc.identifier10.1017/S0025315410001311
dc.identifierWOS:000285478400018
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8766301
dc.descriptionHome ranges of seven Guiana dolphins (Sotalia guianensis) (Van Beneden, 1864) were studied in the Cananeia estuary (similar to 25 degrees 03'S 47 degrees 55'W), south-eastern Brazil. Boat-based observations were conducted from May 2000 to July 2003 in similar to 132 km(2) of protected inner waters. The photo-identification technique was used to follow naturally marked individuals through time and space. From a total of 138 catalogued individuals, five males and two females presented 20+ sightings and were used for home range estimation. Sightings were plotted and analysed in a Geographic Information System (GIS). With the 'Home Range Tools' extension the fixed kernel density estimator with band width (smoothing parameter) chosen via least squares cross-validation was performed for each individual. The fixed kernel method was used to estimate the non-parametric utility distribution of each dolphin, keeping band width (h) constant for a data set. The first polygons created by these parameters had an amoeboid shape and in some cases more than one centre of activity. The 95% home range estimated outlines varied from 1.6 to 22.9 km(2) (7.9 +/- 8.3 km(2)). This large interval shows strong evidences on individual variation in S. guianensis' home ranges. Several individuals showed small home ranges when compared to other cetacean species. An overlap of home ranges of different sizes and shapes were observed for Guiana dolphins with large range movements. Centres of activity were concentrated in the main entrance of the Cananeia estuary. This was a first attempt to understand the way S. guianensis uses the Cananeia estuary and such data are essential for conservation and management purposes.
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionPrograma de Recursos Humanos da ANP para o setor de petroleo e gas-PRH 05-ANP/MCT/FINEP
dc.descriptionUniv Estadual Paulista Julio de Mesquita Filho UN, Inst Biociencias, Dept Zool, Projeto Atlantis,Lab Biol Conservacao Cetaceos, BR-13506900 Rio Claro, SP, Brazil
dc.descriptionUniv Buenos Aires, RA-1053 Buenos Aires, DF, Argentina
dc.descriptionICMBio, Ctr Nacl Pesquisa & Conservacao Mamiferos Aquat C, BR-88053700 Florianopolis, SC, Brazil
dc.descriptionUniv Estadual Paulista Julio de Mesquita Filho UN, IGCE, Programa Posgrad Geociencias & Meio Ambiente, BR-13506900 Rio Claro, SP, Brazil
dc.descriptionUniv Estadual Paulista Julio de Mesquita Filho UN, Inst Biociencias, Dept Zool, Projeto Atlantis,Lab Biol Conservacao Cetaceos, BR-13506900 Rio Claro, SP, Brazil
dc.descriptionUniv Estadual Paulista Julio de Mesquita Filho UN, IGCE, Programa Posgrad Geociencias & Meio Ambiente, BR-13506900 Rio Claro, SP, Brazil
dc.descriptionFAPESP: 01/05128-8
dc.descriptionFAPESP: 08/56543-4
dc.descriptionFAPESP: 05/59439-5
dc.descriptionFAPESP: 05/54149-9
dc.descriptionPrograma de Recursos Humanos da ANP para o setor de petroleo e gas-PRH 05-ANP/MCT/FINEP48610002667/99-16
dc.format1641-1647
dc.languageeng
dc.publisherCambridge Univ Press
dc.relationJournal Of The Marine Biological Association Of The United Kingdom
dc.relation1.403
dc.relation0,548
dc.rightsAcesso restrito
dc.sourceWeb of Science
dc.subjectSotalia guianensis
dc.subjecthome range
dc.subjecthabitat use
dc.subjectkernel density estimator
dc.titleHome ranges of Guiana dolphins (Sotalia guianensis) (Cetacea: Delphinidae) in the Cananeia estuary, Brazil
dc.typeArtigo


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