Results 51 to 60 of about 2,162 (213)

Radiographic Assessment of Bone Maturation: A Tool to Estimate Sexual Maturity in Common Dolphins (Delphinus delphis)?

Marine Mammal Science, Volume 42, Issue 3, July 2026.
ABSTRACT Accurate inference of sexual maturity is fundamental to interpreting marine mammal life histories and population structure. Using Bayesian logistic regression models with a hierarchical ordinal (HOF‐style) parameterisation and canonical analysis of principal coordinates (CAP), we evaluate skeletal metrics in the pectoral flippers of common ...
Eva‐Maria F. Hanninger, Ashley Barratclough, Emma L. Betty, Marti J. Anderson, Matthew R. Perrott, Joy Bowler, Emily I. Palmer, Katharina J. Peters, Karen A. Stockin   +8 more
wiley   +1 more source

Miscellaneous skin lesions of unknown aetiology in cetaceans from South America. Scientific Committee document SC/60/DW4, International Whaling Commission, June 2008, Santiago, Chile [PDF]

, 2008
We report on miscellaneous skin diseases or syndromes of unknown aetiology including whitish, velvety lesions (WVL, often associated with unrelated skin injuries, scars and tooth rakes), large, rounded lesions (LRL, large to very large lesions with an ...
Crespo, E., Echegaray, M., Emin-Lima, N.R., Flach, L., Félix, F., Klaich, J., Moreno, I., Reyes, J.C., Santos, M., Siciliano, S., Van Bressem, M.-F., Van Waerebeek, K., Viddi, F.   +12 more
core  

Fishers’ knowledge about fish trophic interactions in the southeastern Brazilian coast [PDF]

, 2015
Data derived from studies of fishers' local ecological knowledge (LEK) can be invaluable to the proposal of new studies and more appropriate management strategies.
Alpina Begossi, Mariana Clauzet, Matheus M Rotundo, Milena Ramires, Renato Silvano, Walter Barrella   +5 more
core   +1 more source

Population Structure of Riverine and Coastal Dolphins Sotalia fluviatilis and Sotalia guianensis: Patterns of Nuclear and Mitochondrial Diversity and Implications for Conservation

Journal of Heredity, 2018
Coastal and freshwater cetaceans are particularly vulnerable due to their proximity to human activity, localized distributions, and small home ranges. These species include Sotalia guianensis, found in the Atlantic and Caribbean coastal areas of central and South America, and Sotalia fluviatilis, distributed in the Amazon River and tributaries.
Susana, Caballero, Claudia, Hollatz, Sebastián, Rodríguez, Fernando, Trujillo, C Scott, Baker   +4 more
openaire   +2 more sources

The Franciscana (Pontoporia blainvillei) in the Northern Limit of the FMA II: Strandings and Habitat Use in Ilha Grande Bay

Marine Mammal Science, Volume 42, Issue 3, July 2026.
ABSTRACT The presence of the franciscana (Pontoporia blainvillei) at the northern limit of the FMA II was investigated using a range of methods, including monitoring of strandings, boat surveys, and passive acoustic monitoring (PAM). Franciscana strandings were recorded within the distributional gap between Macaé (22°55′ S) and Ilha Grande (23°09′ S ...
Alexandre F. Azevedo, Rafael R. Carvalho, Karina S. Pereira, Lis Bittencourt, Elitieri B. Santos‐Neto, Lara V. Pereira, Beatriz A. Santos, Gian Berardinelli, Haydée A. Cunha, Tatiana L. Bisi, José Lailson‐Brito Jr.   +10 more
wiley   +1 more source

On the feeding habit of the Guiana Dolphin Sotalia guianensis (van Bénedèn, 1864) (Mammalia: Cetartiodactyla: Delphinidae) in southeastern Brazil (~220S): has there been any change in more than two decades?

Journal of Threatened Taxa, 2017
Along the north and central coast of Rio de Janeiro State (22025’S–23000’S), southeastern Brazil, the Guiana Dolphin Sotalia guianensis forages on neritic prey, mainly fish.
Ana Paula Madeira Di Beneditto, Clara da Cruz Vidart Badia, Salvatore Siciliano   +2 more
doaj   +1 more source

Shifting Seas, Changing Diets: Evidence of Temporal Dietary Shifts in Marine Megafauna in Southern Brazil (2017–2023)

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, Mario Roberto Castro Meira‐Filho, Camila Domit   +2 more
wiley   +1 more source

Fatal asphyxia due to laryngeal displacement by large-sized prey in a Guiana dolphin (Sotalia guianensis), Brazil [PDF]

Ciência Rural, 2020
: The Guiana dolphin (Sotalia guianensis) is a small odontocete distributed from Santa Catarina state, Brazil, to Honduras. Although it is currently considered “near threatened” by the International Union for Conservation of Nature, considerable ...
Daniela Bueno Mariani, Juliana Plácido Guimarães, Renata Guedes Batista, Andrei Brum, Kátia Regina Groch, Josué Díaz-Delgado, Jociery Einhardt Vergara Parente   +6 more
doaj   +1 more source

Review of lobomycosis and lobomycosis-like disease (LLD) in Cetacea from South America. Scientific Committee document SC/60/DW13, International Whaling Commission, June 2008, Santiago, Chile [PDF]

, 2008
Caused by a yeast-like organism known as Lacazia loboi, Lobomycosis (or lacaziosis) naturally affects humans, common bottlenose dolphins (Tursiops truncates) inhabiting coastal waters from southern Brazil to Gulf of Mexico and Atlantic coast of Florida ...
Crespo, E.A., Echegaray, M., Flach, L., Flores, P.A.C., Félix, F., Klaich, M.J., Moreno, I.B., Ott, P.H., Reyes, J.C., Sanino, G.P., Santos, M.C.O., Siciliano, S., Tavares, M., Van Bressem, M.-F., Van Waerebeek, K., Viddi, F.   +15 more
core  

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, Tomaz Cezimbra, Guilherme Maricato, Israel S. Maciel, Rodrigo H. Tardin   +4 more
wiley   +1 more source