Results 61 to 70 of about 48,587 (185)
Payment for Environmental Services, fishers and cetaceans’ conservation
Labor & Engenho, 2013 The interactions between fisheries and cetaceans have been widely discussed by several authors. Bycatch of small cetaceans is frequent around the world, threatening several species. In Brazil, in two critical areas– Soure(Marajó Island) and São Sebastião
Shirley Pacheco de Souza
doaj +1 more source
Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 5, May 2026.ABSTRACT Understanding the dietary dynamics of marine megafauna is essential for interpreting ecological interactions and assessing environmental changes in marine ecosystems. We analysed temporal trends in the diets of eight megafaunal species, comprising marine mammals, seabirds, and sea turtles.
Joao Bosco Gusmao +2 more
wiley +1 more source
Brazilian Journal of BiologyVariations of age and total length of Sotalia guianensis from the state of Espírito Santo, Brazil, were evaluated. Specimens were found stranded. Age and total length of 44 Guiana dolphins were assessed based on tooth analysis.
J. Y. Lima +4 more
doaj +1 more source
Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 5, May 2026.ABSTRACT The Atlantic pygmy devil ray (Mobula hypostoma) is an endangered mobulid species whose conservation is hindered by taxonomic confusion and significant gaps in ecological and life history knowledge. Here, we present an integrative study that clarifies the species' taxonomic status, updates its distribution and synthesizes new and existing data ...
Atlantine Boggio‐Pasqua +35 more
wiley +1 more source
Habitat use of the Guiana dolphin, Sotalia guianensis (Cetacea, Delphinidae), in the Caravelas River Estuary, eastern Brazil [PDF]
, 2010 Habitat use patterns of the Guiana dolphin (Sotalia guianensis) were assessed in the Caravelas River Estuary, eastern Brazilian coast (17°54’S, 39°21’W). During 191 surveys (2002-2004), 187 groups were sighted. The Arcview 3.1 software was used to create
Rossi-Santos, M. R. +5 more
core +1 more source
Experimental evidence for electroreception in the bottlenose dolphin (Tursiops truncatus)
, 2022 Passive electroreception is the ability to perceive electric fields in water. It is found mainly in different fish species as well as in the monotremes or in the Guiana dolphin.
Hüttner, Tim (gnd: 1268877298)
core +1 more source
Toxoplasma gondii in cetaceans of Brazil: a histopathological and immunohistochemical survey
Revista Brasileira de Parasitologia VeterináriaToxoplasmosis is a parasitic disease caused by the protozoan Toxoplasma gondii. In cetaceans, T. gondii infection is a significant cause of morbidity and mortality. Despite the worldwide range and broad cetacean host record of T.
Samira Costa-Silva +18 more
doaj +1 more source
Science of The Total Environment, 2020 The presence of pyrethroid compounds in hepatic tissue of Guiana dolphins (Sotalia guianensis) is reported for the first time. Twelve pyrethroids were determined in 50 animals from eight locations of the Brazilian coast. The highest average concentration of total pyrethroids (∑PYR) was 1166 ng.g-1 lw, with values ranging from 148 to 5918 ng.g-1 lw, in ...
Lara G. Vidal +18 more
openaire +3 more sources
From Natural to Human‐Dominated Seascapes: Habitat Loss for Guiana Dolphins Over Two Decades
Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 5, May 2026.ABSTRACT Changes in natural environments, such as coastal and marine zones, caused by human activities impact the quality of habitats and their inhabitants, ultimately jeopardising species conservation. As human activity is ever‐increasing, it is imperative to understand how multiple stressors, such as shipping, fisheries and pollution, affect marine ...
Mariana Leêne Santana Barros de Leal +4 more
wiley +1 more source
Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 2, February 2026.ABSTRACT Estimating population parameters is crucial for understanding species dynamics and assessing anthropogenic impacts, thereby supporting conservation efforts. We evaluate key population parameters—group structure, abundance and capture–recapture probabilities—of the Guiana dolphin in the Paranaguá Estuarine Complex and adjacent coastal waters ...
Stephane P. G. de Moura +3 more
wiley +1 more source