Movement patterns of humpback whales (Megaptera novaeangliae) reoccupying a Brazilian breeding ground

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dc.contributor.authorCarvalho Goncalves, Maria Isabel
dc.contributor.authorSousa-Lima, Renata Santoro de
dc.contributor.authorTeixeira, Niel Nascimento
dc.contributor.authorCarvalhol, Gustavo Henrique [UNESP]
dc.contributor.authorDanilewicz, Daniel
dc.contributor.authorBaumgarten, Julio Ernesto
dc.contributor.institutionUniv Estadual Santa Cruz
dc.contributor.institutionUniv Fed Rio Grande Norte do Norte
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionInst Aqualie
dc.contributor.institutionGrp Estudos Mamiferos Aquat Rio Grande do Sul
dc.date.accessioned2019-10-04T12:31:05Z
dc.date.available2019-10-04T12:31:05Z
dc.date.issued2018-01-01
dc.description.abstractThe population of humpback whales from breeding stock A is increasing, and little is known about the routes used by humpbacks that move north of the main calving area of Brazil, the Abrolhos Bank. The aim of this study was to describe the movements of humpback whales in a reoccupation wintering area (Serra Grande, Bahia state, Brazil) based on land-based surveys to test if movement patterns change during the season and between years, due to group composition, behavioral state, and distance to the coast. The mean leg speed of the groups sighted was 6.88 (+/- 2.92) km/h, and leg speed was positively correlated with distance to the coast. There was an increase in leg speed and distance to the coast with increasing number of escorts in the groups with calves. The mean linearity value for group trajectory was 0.81 (+/- 0.19) and the mean reorientation rate was 25.72 (+/- 19.09) degrees/min. We observed a predominance of trajectories heading south throughout the study. Groups exhibiting more erratic movements early in the season, and groups moving south showed more linear trajectories than groups moving north, indicating the beginning of their migration back to the feeding grounds. Energy conserving strategies and social context affect the movements of humpback whales in Serra Grande, resulting in the observed patterns of the reoccupation of available and suitable habitat north of Abrolhos. Thereby, special attention should be given managing activities with the potential to disturb or displace whales using the region to calve and breed.en
dc.description.affiliationUniv Estadual Santa Cruz, Programa Posgrad Ecol & Conservacao Biodiversidad, Ilheus, BA, Brazil
dc.description.affiliationUniv Fed Rio Grande Norte do Norte, Lab Bioacust, Dept Fisiol & Comportamento, Ctr Biociencias, Natal, RN, Brazil
dc.description.affiliationUniv Estadual Santa Cruz, Dept Ciencias Agr & Ambientais, Ilheus, BA, Brazil
dc.description.affiliationUniv Estadual Paulista, Dept Bot, Rio Claro, SP, Brazil
dc.description.affiliationUniv Estadual Santa Cruz, Programa Posgrd Zool, Ilheus, BA, Brazil
dc.description.affiliationInst Aqualie, Juiz De Fora, MG, Brazil
dc.description.affiliationGrp Estudos Mamiferos Aquat Rio Grande do Sul, Osorio, RS, Brazil
dc.description.affiliationUniv Estadual Santa Cruz, Lab Ecol Aplicada & Conservacao, Ilheus, BA, Brazil
dc.description.affiliationUniv Estadual Santa Cruz, Dept Ciencias Biol, Ilheus, BA, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Dept Bot, Rio Claro, SP, Brazil
dc.description.sponsorshipUniversidade Estadual de Santa Cruz (UESC)
dc.description.sponsorshipCetacean Society International (CSI)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdFAPESP: 14292-9
dc.format.extent13
dc.identifierhttp://dx.doi.org/10.1590/1676-0611-BN-2018-0567
dc.identifier.citationBiota Neotropica. Campinas: Revista Biota Neotropica, v. 18, n. 4, 13 p., 2018.
dc.identifier.doi10.1590/1676-0611-BN-2018-0567
dc.identifier.fileS1676-06032018000400210.pdf
dc.identifier.issn1676-0603
dc.identifier.scieloS1676-06032018000400210
dc.identifier.urihttp://hdl.handle.net/11449/184916
dc.identifier.wosWOS:000446798800001
dc.language.isoeng
dc.publisherRevista Biota Neotropica
dc.relation.ispartofBiota Neotropica
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectcalving area
dc.subjectdistance to the coast
dc.subjectland-based station
dc.subjectlinearity
dc.subjectspeed
dc.titleMovement patterns of humpback whales (Megaptera novaeangliae) reoccupying a Brazilian breeding grounden
dc.typeArtigo
dcterms.rightsHolderRevista Biota Neotropica

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