Results 21 to 30 of about 13,633 (199)

NURSERY AREA FOR THE THREATENED GUIANA DOLPHIN, SOTALIA GUIANENSIS, ON THE NORTHEAST COAST OF BRAZIL

International Journal of Conservation Science
Cetacean calves are considered fragile and vulnerable, especially in the first year of life. To guarantee safety and increase the likelihood of survival, females with calves use habitats with unique characteristics, called nursery areas.
Gessica Rafaelly Dantas da Silva, Maria Gabriela Fernandes Martins de Medeiros, Vitor de Oliveira Lunardi, D. G. Lunardi   +3 more
semanticscholar   +2 more sources

Polyomavirus surveillance in cetaceans of Brazil: first detection of polyomavirus in Guiana dolphins (Sotalia guianensis)

Veterinary Quarterly
Polyomaviruses (PyVs) are small double-stranded DNA viruses able to infect species across all vertebrate taxa. In cetaceans, PyVs have been reported only in short-beaked common dolphin (Delphinus delphis), common bottlenose dolphin (Tursiops truncatus ...
A. Duarte-Benvenuto, J. Díaz-Delgado, A. C. Ewbank, K. Groch, Vanessa Dal Bianco, S. Costa-Silva, R. Zamana-Ramblas, C. Favero, Adriana Castaldo Colosio, Gomes Ramos Hernani da Cunha, E. Santos-Neto, J. Lailson-Brito, V. L. Carvalho, V. Ribeiro, Carolina Pacheco Bertozzi, Caroline F. Pessi, I. Sacristán, J. Catão-Dias, C. Sacristán   +18 more
semanticscholar   +5 more sources

UNUSUAL RESPONSES OF GUIANA DOLPHINS (SOTALIA GUIANENSIS) TO THE PRESENCE OF SWIMMERS AND BOATS

Arquivos de Ciências do Mar
The Guiana dolphin, Sotalia guianensis, classified as 'Vulnerable' to extinction in Brazil, exhibits a particularly small population within Mucuripe embayment, Ceará state, Northeastern Brazil.
Livio Moreira de Gurjão, Cinthya Leite de Oliveira, Heideger Lima Do Nascimento, Vitor Luz Carvalho, Ana Carolina Oliveira de Meirelles   +4 more
semanticscholar   +2 more sources

Evidence for signature whistles in Guiana dolphins (Sotalia guianensis) in Ilhéus, northeastern Brazil

The Journal of the Acoustical Society of America, 2014
Signature whistles have been widely studied in bottlenose dolphins (Tursiops truncatus). A recent study suggested the occurrence of signature whistles in Guiana dolphins (Sotalia guianensis) but could not identify the whistlers. The objective of this study is to describe the whistle characteristics in the population of S.
de Moura Lima, Alice, Le Pendu, Yvonnick
openaire   +5 more sources

Alterações comportamentais do golfinho Sotalia guianensis (Gervais, 1953) provocadas por embarcações [PDF]

Biotemas, 2006
Foram medidas as respostas comportamentais dos golfinhos Sotalia guianensis na presença de embarcações de turismo na enseada do Curral, Pipa-RN, Brasil.
Anderson Luis do Valle, Francielli Cristine Cunha Melo   +1 more
doaj   +1 more source

O Desenvolvimento do Turismo Náutico e a sua Ligação com a Observação do Boto-Cinza (sotalia guianensis) na Região de Cananéia, Litoral Sul do Estado de São Paulo

Revista Turismo em Análise, 2010
Resumo O boto-cinza é hoje um grande atrativo e gerador de renda para a região estuarina de Cananéia. O crescimento da infra-estrutura turística desta região parece estar intimamente relacionado com o crescimento do interesse em observar estes animais na
Gislaine de Fátima Filla, Emydio Monteiro Filho   +1 more
doaj   +1 more source

Electroreception in the Guiana dolphin (Sotalia guianensis) [PDF]

Proceedings of the Royal Society B: Biological Sciences, 2011
Passive electroreception is a widespread sense in fishes and amphibians, but in mammals this sensory ability has previously only been shown in monotremes. While the electroreceptors in fish and amphibians evolved from mechanosensory lateral line organs, those of monotremes are based on cutaneous glands innervated by trigeminal nerves.
Nicole U, Czech-Damal, Alexander, Liebschner, Lars, Miersch, Gertrud, Klauer, Frederike D, Hanke, Christopher, Marshall, Guido, Dehnhardt, Wolf, Hanke   +7 more
openaire   +2 more sources

High-frequency social communication in Sotalia guianensis [PDF]

The Journal of the Acoustical Society of America, 2019
This study aimed to investigate the use of high ultrasonic frequencies (above 40 kHz) in the Sotalia guianensis whistle repertoire. The whistles were classified as high-frequency (HF) whistles and very high-frequency (VHF) whistles. Seven parameters were extracted and a general linear mixed effects model was performed between the total number of ...
Mariana, Barbosa, Lis, Bittencourt, Luciana, G Andrade, Tatiana, L Bisi, José, Lailson-Brito, Alexandre, F Azevedo   +5 more
openaire   +2 more sources

Feeding Strategies of the Guiana Dolphin Sotalia guianensis [PDF]

The Open Marine Biology Journal, 2009
The aim of this study was to characterize the feeding behavior of the Guiana dolphin, S. guianensis, through description and quantification of the strategies used by the dolphins, and possibly to apply this patterns to other areas in its distribution. Data were collected during systematic boat surveys, between November/1996 and May/1997, with 120 hours
Marcos R. Rossi-Santos, Paulo A.C. Flores   +1 more
openaire   +1 more source

Descrição do comportamento de superfície do boto cinza, Sotalia guianensis, na Praia de Pipa - RN Description of the surface behaviour of marine tucuxi, Sotalia guianensis, at Pipa Beach - RN

Psicologia: Reflexão e Crítica, 2008
O estudo do comportamento animal é uma área de pesquisa consolidada, que cresceu e se diversificou em vários países e que deu origem a disciplinas e abordagens de investigação, como a Etologia, a Ecologia Comportamental, a Neuroecologia, a Psicologia e a
Lídio França do Nascimento, Priscila Izabel A. P. Medeiros, Maria Emilia Yamamoto   +2 more
doaj   +1 more source