Results 1 to 10 of about 2,162 (213)
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.
FERNANDA M. RODRIGUES +4 more
doaj +5 more sources
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.
ESTELLA Z. BECEGATO +5 more
doaj +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
exaly +2 more sources
Perspectives and limitations regarding participatory monitoring of cetaceans: Use of a Platform of Opportunities approach by the tourism industry at the Anhatomirim Environmental Protection Area [PDF]
Desenvolvimento e Meio Ambiente, 2023 O crescente avanço das populações humanas sobre as áreas costeiras coloca em risco a biodiversidade associada aos ecossistemas locais. Dentre as atividades antrópicas exercidas nessas regiões, o ecoturismo, com destaque aquele associado à observação de ...
Eduardo Maciel Osorio Freitas +1 more
doaj +3 more sources
The vertebral morphology of the estuarine dolphin, Sotalia guianensis (Cetacea, Delphinidae) [PDF]
Biotemas, 2004 We present a description of the backbone of the marine tucuzi (Sotalia guianensis ) vertebrae (n= 34), including the variations in the vertebral formula (n= 32)(UFSC- Universidade Federal de Santa catarina): Ce7, T12,L10-12,Ca23-25= 52-56.
Paulo César Simões-Lopes +1 more
doaj +2 more sources
Molecular sexing of tucuxi dolphins (Sotalia guianensis and Sotalia fluviatilis) using samples from biopsy darting and decomposed carcasses [PDF]
Genetics and Molecular Biology, 2007 We tested the zinc-finger sex chromosome-linked genes Zfx/Zfy and the sex-determining region Y (Sry) genes for gender determination of biopsy samples from marine and riverine tucuxi dolphins (Sotalia guianensis and S. fluviatilis).
Haydée A. Cunha, Antonio M. Solé-Cava
doaj +4 more sources
Frontiers in Marine Science, 2021 In many regions of the world, the use of cetaceans as bait or protein source has been reported. In most cases the individuals are from bycatch but also from intentionally killed animals.
Lorenzo von Fersen
exaly +3 more sources
Cetacean records along São Paulo state coast, Southeastern Brazil [PDF]
Brazilian Journal of Oceanography, 2010 The São Paulo state (SP) coast (23º18'S, 44º42'W; 25º14'S, 48º01'W) is of approximately 600 km in length, bordering the Western Atlantic Ocean, in southeastern Brazil.
Marcos César de Oliveira Santos +6 more
doaj +3 more sources
Journal of Biosciences, 2011 Most techniques used for estimating the age of Sotalia guianensis (van Beneden, 1864) (Cetacea; Delphinidae) are very expensive, and require sophisticated equipment for preparing histological sections of teeth. The objective of this study was to test a more affordable and much simpler method, involving of the manual wear of teeth followed by ...
Emygdio L A Monteiro-Filho
exaly +3 more sources
Diversity, 2013 In 2005, three fishermen, with artisan fishing vessels and drift gillnets, accidentally captured around 200 dolphins between Vigia and Salinópolis in the Amazon River estuary. The dolphins died and they then prepared their vaginas and penises in order to
Manuel Ruiz-Garcia +2 more
exaly +3 more sources