Results 151 to 160 of about 13,633 (199)

Processo de osteomontagem de esqueleto de boto-cinza (Sotalia Guianensis)

Biológicas & Saúde
Bianca Louzada de Souza, Maria Clara Paschoalini Liquer, Larissa Solino de Abreu Franco, Gabriel Duarte Cerqueira Dias Beornelli, Eduarda Borges da Rocha, Ana Paula Azeredo da Costa Salles, L. S. da Silveira   +6 more
semanticscholar   +1 more source

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Population parameters of Guiana dolphins (Sotalia guianensis) in a southern Brazilian estuary

Mammalian Biology, 2023
Populations of many coastal cetaceans are threatened by negative anthropogenic impacts. Key precursors to effective recovery plans include understanding life histories and population parameters to establish baselines for subsequent changes. Here, we provide this information for one of the largest populations of Guiana dolphins (Sotalia guianensis), in ...
Stephane P. G. de Moura, B. Schulze, M. Broadhurst, M. Cantor, Camilla Domit   +4 more
semanticscholar   +5 more sources

Sampling Interval for Measurements of Estuarine Dolphins' (Sotalia guianensis) Behaviour

Marine Biodiversity Records, 2009
Renata G Ferreira
exaly   +2 more sources

Latitudinal Variation in Whistle Structure of the Estuarine Dolphin Sotalia guianensis

Behaviour, 2006
[Analyses of intraspecific variation in behaviour can provide insights into the process of behavioural diversification. In this study we characterized geographic variation in whistle structure of the estuarine dolphin, Sotalia guianensis, at 10 sites of a ∼4000 km transect along the coast of Brazil.
Jeffrey Podos, Marcos R Rossi-Santos
exaly   +3 more sources

Habitat use of Guiana dolphin (Sotalia guianensis) in a heavily urbanized embayment

Marine Ecology Progress Series, 2023
Understanding environmental and anthropogenic variables that influence the presence of dolphins in coastal areas is fundamental for conservation planning and forecasting. In this study, we applied generalized additive models to identify areas of high probability of occurrence of Guiana dolphins in Mucuripe embayment, a heavily urbanized area in ...
Aco de Meirelles, KF Choi-Lima, TM Campos Vila Nova, E. Leite de Araujo Monteiro, TMdC Lotufo   +4 more
semanticscholar   +2 more sources

Exploring microplastic contamination in Guiana dolphins (Sotalia guianensis): Insights into plastic pollution in the southwestern tropical Atlantic.

Marine Pollution Bulletin, 2023
Marine mammals are considered sentinel species and may act as indicators of ocean health. Plastic residues are widely distributed in the oceans and are recognised as hazardous contaminants, and once ingested can cause several adverse effects on wildlife.
L. G. Pereira, Guilherme V. B. Ferreira, Anne K. S. Justino, Kelen Melo Tavares de Oliveira, Monique Torres de Queiroz, Natascha Schmidt, Vincent Fauvelle, V. Carvalho, F. Lucena-Frédou   +8 more
semanticscholar   +1 more source

Light and Scanning Electron Microscopic Study of the Tongue in the Estuarine Dolphin (Sotalia guianensis Van Bénéden, 1864).

Zoological Science, 2011
The importance of the tongue during feeding, and the limited information on the tongue of most aquatic mammals led us to investigate its morphological aspects in sexually immature and mature Sotalia guianensis.
Fernando Cesar Weber Rosas, Ii-Sei Watanabe, Juliana Marigo   +2 more
exaly   +2 more sources

Underwater audiogram of a tucuxi (Sotalia fluviatilis guianensis)

The Journal of the Acoustical Society of America, 1998
Using a go/no go response paradigm, a tucuxi (Sotalia fluviatilis guianensis) was trained to respond to pure-tone signals for an underwater hearing test. Auditory thresholds were obtained from 4 to 135 kHz. The audiogram curve shows that this Sotalia had an upper limit of hearing at 135 kHz; from 125 to 135 kHz sensitivity decreased by 475 dB/oct. This
M, Sauerland, G, Dehnhardt
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Sensitivity of a tucuxi (Sotalia fluviatilis guianensis) to airborne sound

The Journal of the Acoustical Society of America, 2005
Auditory systems of cetaceans are considered highly specialized for underwater sound processing, whereas the extent of their hearing capacity in air is still a point of issue. In this study, the sensitivity to airborne sound in a male tucuxi (Sotalia fluviatilis guianensis) was tested by means of a go/no go response paradigm.
Alexander, Liebschner, Wolf, Hanke, Lars, Miersch, Guido, Dehnhardt, Matthias, Sauerland   +4 more
openaire   +2 more sources

Habitat use by the Guiana dolphin (Sotalia guianensis) (Cetartiodactyla: Delphinidae) in southeastern Brazil

, 2021
The coastal habit and site fidelity reported for Sotalia guianensis make this species especially vulnerable to human activities. Thus, ecological studies focusing on the habitat use of the populations are essential for S.
Ana Ribeiro-Campos, Karina S. Pereira, Carlos Eduardo P. Quintana, Mariana Barbosa, Carolina P. Dias, J. A. Brião, C. D. Dos Santos, C. Castro, Harison S. Pedreira, R. Carvalho, E. Santos-Neto, Lis Bittencourt, T. Bisi, J. Lailson-Brito, A. Azevedo   +14 more
semanticscholar   +1 more source