Guiana dolphins, Sotalia guianensis (Cetacea: Delphinidae), in the Paranaguá Estuarine Complex: insights on the use of area based on the photo-identification technique
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/S1984-46702010000300002 http://hdl.handle.net/11449/27129 |
Resumo: | The aim of the present study was to provide a preliminary description of habitat use by Guiana dolphins, Sotalia guianensis (Van Bénéden, 1864) in the Paranaguá Estuarine Complex (PEC), state of Paraná, Brazil. Approximately 124 km² were surveyed by small boat from April 2006 to July 2008 in the following subsets of the PEC: Canal do Superagui (~28 km²); Pinheiros Bay (~34 km²); part of Laranjeiras Bay, which included the Guaraqueçaba sub-estuary (~38 km²); and part of the Mixture Section of the PEC (~24 km²). Our efforts were unevenly distributed in the study area. During 55 survey days covering seven distinct seasons, we spent 165 hours observing 323 groups of S. guianensis. Group size varied from two individuals to aggregations as large as approximately 100 dolphins. A total of 49,921 photographs were analyzed; 15,038 (30%) were considered useful for identification purposes. A total of 182 individuals were catalogued, from which 122 (67%) were cataloged in the last three seasons, when the surveyed area was expanded. The number of individual sightings in distinct days varied from one to 16. A total of 94 individuals (51.6%) were re-sighted at least once. From the 37 individuals cataloged in the first season, 18 (48.6%) were re-sighted in the last season. Eleven individuals with 5+ sightings were always observed in the same subset of the estuary, including an individual with 13 sightings. Sixteen individuals with three to 16 sightings were observed in three of the four estuary subsets surveyed. An individual cataloged in May 2002 in a pilot study was re-sighted up to August 2006. Our preliminary results correspond to the first evidence of site fidelity for several monitored individuals; it also revealed, for the first time, the flexibility of movements throughout the entire estuarine complex by several other individuals |
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Guiana dolphins, Sotalia guianensis (Cetacea: Delphinidae), in the Paranaguá Estuarine Complex: insights on the use of area based on the photo-identification techniqueHabitat usesite fidelitycetaceansecologyThe aim of the present study was to provide a preliminary description of habitat use by Guiana dolphins, Sotalia guianensis (Van Bénéden, 1864) in the Paranaguá Estuarine Complex (PEC), state of Paraná, Brazil. Approximately 124 km² were surveyed by small boat from April 2006 to July 2008 in the following subsets of the PEC: Canal do Superagui (~28 km²); Pinheiros Bay (~34 km²); part of Laranjeiras Bay, which included the Guaraqueçaba sub-estuary (~38 km²); and part of the Mixture Section of the PEC (~24 km²). Our efforts were unevenly distributed in the study area. During 55 survey days covering seven distinct seasons, we spent 165 hours observing 323 groups of S. guianensis. Group size varied from two individuals to aggregations as large as approximately 100 dolphins. A total of 49,921 photographs were analyzed; 15,038 (30%) were considered useful for identification purposes. A total of 182 individuals were catalogued, from which 122 (67%) were cataloged in the last three seasons, when the surveyed area was expanded. The number of individual sightings in distinct days varied from one to 16. A total of 94 individuals (51.6%) were re-sighted at least once. From the 37 individuals cataloged in the first season, 18 (48.6%) were re-sighted in the last season. Eleven individuals with 5+ sightings were always observed in the same subset of the estuary, including an individual with 13 sightings. Sixteen individuals with three to 16 sightings were observed in three of the four estuary subsets surveyed. An individual cataloged in May 2002 in a pilot study was re-sighted up to August 2006. Our preliminary results correspond to the first evidence of site fidelity for several monitored individuals; it also revealed, for the first time, the flexibility of movements throughout the entire estuarine complex by several other individualsFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Agência Nacional do Petróleo, Gás Natural e Biocombustíveis (ANP)Financiadora de Estudos e Projetos (FINEP)Ministério da Ciência e Tecnologia (MCT)Programa de Recursos Humanos da ANP para o setor de petroleo e gas PRH-ANP/MCTUniversidade Estadual Paulista Júlio de Mesquita Filho Instituto de Biociências Departamento de ZoologiaUniversidade Estadual Paulista Júlio de Mesquita Filho Instituto de Biociências Departamento de ZoologiaFAPESP: 05/59439-5FAPESP: 05/54149-9Sociedade Brasileira de ZoologiaUniversidade Estadual Paulista (Unesp)Santos, Marcos C. de O. [UNESP]Oshima, Júlia E. de F. [UNESP]Pacífico, Eduardo dos S. [UNESP]Silva, Ednilson da [UNESP]2014-05-20T15:09:11Z2014-05-20T15:09:11Z2010-06-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article324-330application/pdfhttp://dx.doi.org/10.1590/S1984-46702010000300002Zoologia (Curitiba). Sociedade Brasileira de Zoologia, v. 27, n. 3, p. 324-330, 2010.1984-4670http://hdl.handle.net/11449/2712910.1590/S1984-46702010000300002S1984-46702010000300002WOS:000279814900002S1984-46702010000300002.pdfSciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengZoologia (Curitiba)0,405info:eu-repo/semantics/openAccess2023-12-04T06:17:12Zoai:repositorio.unesp.br:11449/27129Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:30:02.952148Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Guiana dolphins, Sotalia guianensis (Cetacea: Delphinidae), in the Paranaguá Estuarine Complex: insights on the use of area based on the photo-identification technique |
title |
Guiana dolphins, Sotalia guianensis (Cetacea: Delphinidae), in the Paranaguá Estuarine Complex: insights on the use of area based on the photo-identification technique |
spellingShingle |
Guiana dolphins, Sotalia guianensis (Cetacea: Delphinidae), in the Paranaguá Estuarine Complex: insights on the use of area based on the photo-identification technique Santos, Marcos C. de O. [UNESP] Habitat use site fidelity cetaceans ecology |
title_short |
Guiana dolphins, Sotalia guianensis (Cetacea: Delphinidae), in the Paranaguá Estuarine Complex: insights on the use of area based on the photo-identification technique |
title_full |
Guiana dolphins, Sotalia guianensis (Cetacea: Delphinidae), in the Paranaguá Estuarine Complex: insights on the use of area based on the photo-identification technique |
title_fullStr |
Guiana dolphins, Sotalia guianensis (Cetacea: Delphinidae), in the Paranaguá Estuarine Complex: insights on the use of area based on the photo-identification technique |
title_full_unstemmed |
Guiana dolphins, Sotalia guianensis (Cetacea: Delphinidae), in the Paranaguá Estuarine Complex: insights on the use of area based on the photo-identification technique |
title_sort |
Guiana dolphins, Sotalia guianensis (Cetacea: Delphinidae), in the Paranaguá Estuarine Complex: insights on the use of area based on the photo-identification technique |
author |
Santos, Marcos C. de O. [UNESP] |
author_facet |
Santos, Marcos C. de O. [UNESP] Oshima, Júlia E. de F. [UNESP] Pacífico, Eduardo dos S. [UNESP] Silva, Ednilson da [UNESP] |
author_role |
author |
author2 |
Oshima, Júlia E. de F. [UNESP] Pacífico, Eduardo dos S. [UNESP] Silva, Ednilson da [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Santos, Marcos C. de O. [UNESP] Oshima, Júlia E. de F. [UNESP] Pacífico, Eduardo dos S. [UNESP] Silva, Ednilson da [UNESP] |
dc.subject.por.fl_str_mv |
Habitat use site fidelity cetaceans ecology |
topic |
Habitat use site fidelity cetaceans ecology |
description |
The aim of the present study was to provide a preliminary description of habitat use by Guiana dolphins, Sotalia guianensis (Van Bénéden, 1864) in the Paranaguá Estuarine Complex (PEC), state of Paraná, Brazil. Approximately 124 km² were surveyed by small boat from April 2006 to July 2008 in the following subsets of the PEC: Canal do Superagui (~28 km²); Pinheiros Bay (~34 km²); part of Laranjeiras Bay, which included the Guaraqueçaba sub-estuary (~38 km²); and part of the Mixture Section of the PEC (~24 km²). Our efforts were unevenly distributed in the study area. During 55 survey days covering seven distinct seasons, we spent 165 hours observing 323 groups of S. guianensis. Group size varied from two individuals to aggregations as large as approximately 100 dolphins. A total of 49,921 photographs were analyzed; 15,038 (30%) were considered useful for identification purposes. A total of 182 individuals were catalogued, from which 122 (67%) were cataloged in the last three seasons, when the surveyed area was expanded. The number of individual sightings in distinct days varied from one to 16. A total of 94 individuals (51.6%) were re-sighted at least once. From the 37 individuals cataloged in the first season, 18 (48.6%) were re-sighted in the last season. Eleven individuals with 5+ sightings were always observed in the same subset of the estuary, including an individual with 13 sightings. Sixteen individuals with three to 16 sightings were observed in three of the four estuary subsets surveyed. An individual cataloged in May 2002 in a pilot study was re-sighted up to August 2006. Our preliminary results correspond to the first evidence of site fidelity for several monitored individuals; it also revealed, for the first time, the flexibility of movements throughout the entire estuarine complex by several other individuals |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-06-01 2014-05-20T15:09:11Z 2014-05-20T15:09:11Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1590/S1984-46702010000300002 Zoologia (Curitiba). Sociedade Brasileira de Zoologia, v. 27, n. 3, p. 324-330, 2010. 1984-4670 http://hdl.handle.net/11449/27129 10.1590/S1984-46702010000300002 S1984-46702010000300002 WOS:000279814900002 S1984-46702010000300002.pdf |
url |
http://dx.doi.org/10.1590/S1984-46702010000300002 http://hdl.handle.net/11449/27129 |
identifier_str_mv |
Zoologia (Curitiba). Sociedade Brasileira de Zoologia, v. 27, n. 3, p. 324-330, 2010. 1984-4670 10.1590/S1984-46702010000300002 S1984-46702010000300002 WOS:000279814900002 S1984-46702010000300002.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Zoologia (Curitiba) 0,405 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
324-330 application/pdf |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Zoologia |
publisher.none.fl_str_mv |
Sociedade Brasileira de Zoologia |
dc.source.none.fl_str_mv |
SciELO reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128230548307968 |