Results 21 to 30 of about 41,809 (209)

Mercury-selenium relationships in liver of Guiana dolphin: the possible role of Kupffer cells in the detoxification process by tiemannite formation. [PDF]

PLoS One, 2012
Top marine predators present high mercury concentrations in their tissues as consequence of biomagnification of the most toxic form of this metal, methylmercury (MeHg).
Lailson-Brito J, Cruz R, Dorneles PR, Andrade L, Azevedo Ade F, Fragoso AB, Vidal LG, Costa MB, Bisi TL, Almeida R, Carvalho DP, Bastos WR, Malm O.   +12 more
europepmc   +2 more sources

Novel cetacean morbillivirus in a rare Fraser's dolphin (Lagenodelphis hosei) stranding from Maui, Hawai'i. [PDF]

Sci Rep, 2021
Cetacean morbillivirus (CeMV) is a global threat to cetaceans. We report a novel morbillivirus from a Fraser’s dolphin (Lagenodelphis hosei) that stranded in Maui, Hawaii in 2018 that is dissimilar to the beaked whale morbillivirus previously identified ...
West KL, Silva-Krott I, Landrau-Giovannetti N, Rotstein D, Saliki J, Raverty S, Nielsen O, Popov VL, Davis N, Walker WA, Subramaniam K, Waltzek TB.   +11 more
europepmc   +2 more sources

Eye morphology of Guiana dolphins (Sotalia guianensis) and Clymene dolphins (Stenella clymene)

Anais da Academia Brasileira de Ciências, 2022
Recent studies showed that vision and hearing in dolphins are mechanisms for perception of the environment, and transmission of information among individuals. Considering that Guiana dolphins (Sotalia guianensis) are distributed in costal regions, and Clymene dolphins (Stenella clymene) are found in oceanic environments, the objective of this study was
FERNANDA M. RODRIGUES, FABRICIO B. DE SÁ, PABLO H. LANGUIDEY, JOCIERY E. VERGARA-PARENTE, JULIANA P. GUIMARÃES   +4 more
openaire   +5 more sources

From narrow and overlapped to wide and segregated: The isotopic niche of a tropical cetacean community

Ecological Indicators, 2023
Species in sympatry can coexist due to some degree of niche partitioning. Four cetacean species, Guiana (Sotalia guianensis), franciscana (Pontoporia blainvillei), Atlantic spotted (Stenella frontalis), and rough-toothed dolphins (Steno bredanensis ...
M.C. Neves, M. Vannuci-Silva, G. Montanini, A.F. Azevedo, J. Lailson-Brito, T.L. Bisi   +5 more
doaj   +1 more source

Reproductive morphology of female Guiana dolphins (Sotalia guianensis) [PDF]

Anais da Academia Brasileira de Ciências, 2015
The reproductive morphology of cetaceans is poorly studied and, despite the large number of strandings, reports on this subject are scarce due to access to carcasses mostly in an advanced state of decomposition. The present study aimed to describe histological characteristics of the female genital tract ofSotalia guianensis, in order to assist in ...
BECEGATO, ESTELLA Z., ANDRADE, JANAINA P., GUIMARÃES, JULIANA P., VERGARA-PARENTE, JOCIERY E., MIGLINO, MARIA ANGELICA, SILVA, FERNANDA M. DE OLIVEIRA E   +5 more
openaire   +5 more sources

Health conditions of Guiana dolphins facing cumulative anthropogenic impacts

Mammalian Biology, 2022
AbstractCoastal areas are associated with anthropogenic activities and stressors that can expose the marine fauna to negative cumulative impacts. Apex predators, such as dolphins, can flag the quality of their environment through health parameters such as cutaneous and body conditions.
Estela Dibo Soares, Mauricio Cantor, Ana Paula Frederico Rodrigues Loure Bracarense, Kátia Regina Groch, Camila Domit   +4 more
openaire   +3 more sources

Density, abundance and distribution of the guiana dolphin, (Sotalia guianensis van Benéden, 1864) in Sepetiba Bay, Southeast Brazil

J. Cetacean Res. Manage., 2023
Line transect surveys were conducted from August 2002 to July 2003 to examine the abundance and distribution of the guiana dolphin (Sotalia guianensis) in Sepetiba Bay-Southeast Brazil. A boat-based platform and 50 pre-determined line transects were used
L. Flach, Patricia Amaral Flach, Adriano Garcia Chiarello   +2 more
semanticscholar   +1 more source

Strandings of cetaceans on the Espírito Santo coast, southeast Brazil, 1975-2015. [PDF]

Zookeys, 2020
Espírito Santo state is located on the eastern margin of Brazil, in a transitional tropical-subtropical area (18°S–21°S) dominated by oligotrophic waters.
Mayorga LFSP, Vanstreels RET, Bhering RCC, Mamede N, Costa LMB, Pinheiro FCF, Reis LWD, Trazzi A, Meirelles WLC, Ribeiro AM, Siciliano S.   +10 more
europepmc   +4 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

Subcellular Cadmium, Lead and Mercury Compartmentalization in Guiana Dolphins (Sotalia guianensis) From Southeastern Brazil

Frontiers in Marine Science, 2020
Marine mammals are considered excellent ocean health sentinels and are ubiquitously exposed to chemical contaminants worldwide. The Guiana dolphin (Sotalia guianensis) is a near-threatened dolphin species from Brazil with unknown population size data ...
Rachel Ann Hauser-Davis, Rachel Ann Hauser-Davis, Lívia Figueiredo, Leila Lemos, Leila Lemos, Jailson Fulgêncio de Moura, Jailson Fulgêncio de Moura, Rafael C. C. Rocha, Tatiana Saint’Pierre, Roberta L. Ziolli, Salvatore Siciliano, Salvatore Siciliano   +11 more
doaj   +1 more source