Results 71 to 80 of about 48,587 (185)

Persistent Hotspots and Seasonal Habitat Use of Indo‐Pacific Bottlenose Dolphins (Tursiops aduncus) in an Urban Marine Protected Area

Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 10, October 2026.
ABSTRACT Understanding wildlife distribution is essential for identifying critical habitats, monitoring responses to environmental change and informing conservation strategies. We used long‐term sighting data (1993–2020) and generalised additive modelling (GAM) to quantify and characterise the long‐term spatiotemporal distribution of Indo‐Pacific ...
Kennadie Haigh, Guido J. Parra, Luciana Möller   +2 more
wiley   +1 more source

Morphology of the Guiana dolphin (Sotalia guianensis) off southeastern Brazil: growth and geographic variation [PDF]

, 2010
The objective of this study was to analyze the morphology of Guiana dolphin (Sotalia guianensis) to evaluate the existence of geographical variation along southeastern Brazil.
F. S. Alvarenga, M. C. O. Santos, L. Barbosa, S. Siciliano, A. P. M. Di Beneditto, A. F. C. Vicente, A. B. Fragoso, Barbosa, L., A. F. Azevedo, Lailson-Brito, Jr., J., Siciliano, S., Lima, N. R. W., Di Beneditto, A. P. M., R. M. A. Ramos, Santos, M. C. O., Ramos, R. M. A., Vicente, A. F. C., A. N. Zerbini, E. Zampirolli, Azevedo, A. F., Fragoso, A. B., Alvarenga, F. S., Zampirolli, E., J. Lailson-Brito, Zerbini, A. N., N. R. W. Lima   +25 more
core   +1 more source

Comparative Analysis of the Whistles of Three Oceanic Dolphins in the Comoros

Marine Mammal Science, Volume 42, Issue 1, January 2026.
ABSTRACT The Shisiwani National Park (Anjouan, Comoros) is a cetacean biodiversity hotspot. However, the vocal behavior of marine mammals inhabiting the area has never been studied. In 2023, we conducted a 400‐nautical‐mile survey from a 5‐m motorboat to determine their presence.
Rihana Ali Ahmed, Anna Zanoli, Federica Scebba, Fouad Abdou Rabi, Youssouf Ben Ali Abdallah, Sara Ferri, Francesco Caruso, Cristina Giacoma, Livio Favaro   +8 more
wiley   +1 more source

Melon‐Headed Whale (Peponocephala electra) Occurrence in the Equatorial Mid‐Atlantic Ocean With Descriptions of Their Whistles

Marine Mammal Science, Volume 42, Issue 1, January 2026.
ABSTRACT Acoustic studies for any cetacean species in tropical Atlantic Ocean waters are scarce, especially for oceanic dolphins, such as the melon‐headed whale, Peponocephala electra. Here we describe a unique visual and acoustic record for this species, filling an information gap about the acoustic patterns of these delphinids in this part of the ...
Diana C. Freitas, Manuela Bassoi, Isis V. B. Da Silva, Luane S. Ferreira, Izabela C. Laurentino, Juliana R. Moron, Renata S. Sousa‐Lima   +6 more
wiley   +1 more source

A river dolphin from Kartabo Bartica District, British Guiana

Zoologica : scientific contributions of the New York Zoological Society., 1928
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +3 more sources

Investigating Harvest and Vessel Traffic Exposure as Drivers of Social Group Characteristics in Canadian Beluga ( Delphinapterus leucas ) Populations

Marine Mammal Science, Volume 41, Issue 4, October 2025.
ABSTRACT Assessing variation in social behaviors of group‐living animals may provide insight into the impacts of population stressors. Using very high resolution (VHR) satellite imagery acquired over 3 years, we compared social group size and composition, as well as spatial and social cohesion in three beluga ( Delphinapterus leucas ) populations that ...
Jordan B. Stewart, John Iacozza, Lisa Loseto, Cortney A. Watt   +3 more
wiley   +1 more source

Group size and composition of Guiana dolphins (Sotalia guianensis) (Van Bénèden, 1864) in the Paranaguá Estuarine Complex, Brazil

Brazilian Journal of Biology
The aim of the present study was to describe the characteristics of Guiana dolphins (S. guianensis) group size and composition in the Paranaguá Estuarine Complex (25° 15' -25° 36' S and 48° 02'-48° 45' W), Paraná State, as well as to verify the existence
MCO. Santos, JEF. Oshima, ES. Pacífico, E. Silva   +3 more
doaj   +1 more source

Coordinated feeding behavior of the Guiana dolphin, Sotalia guianensis (Cetacea: Delphinidae), in southeastern Brazil: a comparison between populations

Zoologia (Curitiba), 2013
The coordinated feeding tactics used by delphinids are influenced by differences in the distribution of prey species, season, and opportunities for social learning.
Elaine C. da S. Oliveira, Rodrigo H. Tardin, Fabiana R. Poletto, Sheila M. Simão   +3 more
doaj   +1 more source

Breaking down silos: Conservation areas for Amazonian flagship terrestrial and freshwater species

Conservation Science and Practice, Volume 7, Issue 9, September 2025.
This study shows that 17% of the Amazon River Basin is covered by areas of high jaguar density and freshwater migratory species richness, 83% of which are found in Brazil and Peru. A third of these areas are located outside of formal protected areas or Indigenous territories.
Natalie Shahbol, Melissa Arias, Valeria Boron, Helga Correa Wiederhecker, Bernardo Caldas De Oliveira, Fabiola La Rosa, Robin Naidoo, Marcelo Oliveira‐Da‐Costa, Jessica Pacheco, Mariana Paschoalini Frias, Sandra Petrone, Lila Sainz, David Tickner, Fernando Trujillo, José Saulo Usma Oviedo, Paul Andre Van Damme, Michele Thieme   +16 more
wiley   +1 more source

A computational framework to characterize and compare the tonal repertoires of toothed whales

Methods in Ecology and Evolution, Volume 16, Issue 7, Page 1350-1368, July 2025.
Abstract Toothed whales, despite being one of the most acoustically specialized lineages of vertebrates, lack detailed vocal repertoire characterizations comparable to those of songbirds and primates. Current descriptions often lack standardization, limiting interspecies and intraspecies comparisons critical for understanding the contribution of ...
Maia Austin, Julie N. Oswald, Manali Rege‐Colt, Emma Gagne, Eric Angel Ramos, Joëlle De Weerdt, Nicola Ransome, Laura J. May‐Collado   +7 more
wiley   +1 more source