Results 51 to 60 of about 315 (154)

Morphology of the hyoid apparatus of some species of odontocetes from southern Brazil. [PDF]

Biotemas, 2009
The hyoid apparatus of odontocetes serves as a major attachment point for the muscles and ligaments that subserve breathing, sound production and swallowing.
Dan Jacobs Pretto, Gabriela Oliveira, Maurício Eduardo Graipel, Paulo César Simões-Lopes   +3 more
doaj  

Harbour Porpoises Are Flexible Predators Displaying Context‐Dependent Foraging Behaviours

Ecology and Evolution, Volume 14, Issue 12, December 2024.
This study provides the first record of previously undescribed foraging behaviours of harbour porpoises. Our results indicate use of context‐dependent foraging strategies, suggesting that porpoises are flexible predators that use conditional foraging strategies and adapt their behaviour in response to environmental characteristics.
Johanna Stedt, Héloïse Hamel, Sara Torres Ortiz, Jakob Højer Kristensen, Magnus Wahlberg   +4 more
wiley   +1 more source

Cetaceans using the marine protected area of "Parque Estadual Marinho da Laje de Santos", Southeastern Brazil

Brazilian Journal of Oceanography
The aim of this study was to evaluate the presence of cetaceans in the waters surrounding the Marine Protected Area (MPA) known as “Parque Estadual Marinho da Laje de Santos (PEMLS)”, placed in coastal waters at the southeastern coast of Brazil.
Marcos Cesar de Oliveira Santos, Giovanna Corrêa e Figueiredo, Marie-Francoise Van Bressem   +2 more
doaj   +1 more source

Retrospective Study of Fishery Interactions in Stranded Cetaceans, Canary Islands

Frontiers in Veterinary Science, 2020
Estimating cetacean interactions with fishery activities is challenging. Bycatch and chronic entanglements are responsible for thousands of cetacean deaths per year globally.
Raquel Puig-Lozano, Antonio Fernández, Eva Sierra, Pedro Saavedra, Cristian M. Suárez-Santana, Jesús De la Fuente, Josué Díaz-Delgado, Ana Godinho, Ana Godinho, Natalia García-Álvarez, Daniele Zucca, Aina Xuriach, Marina Arregui, Idaira Felipe-Jiménez, Francesco Consoli, Pablo J. Díaz-Santana, Simone Segura-Göthlin, Nakita Câmara, Miguel A. Rivero, Simona Sacchini, Yara Bernaldo de Quirós, Manuel Arbelo   +21 more
doaj   +1 more source

Feeding mode drives mandibular shape in extant Delphinidae

Journal of Zoology, Volume 324, Issue 3, Page 187-200, November 2024.
Delphinidae exhibit fascinating morphological adaptations linked to their feeding strategy, biosonar mode and habitat. This study integrates phylogenetic and 2D geometric morphometric analyses to investigate the adaptive significance of mandible morphological variation in response to ecological pressures in Delphinidae.
D. Vicari, G. Boccone, L. Pandolfi
wiley   +1 more source

A pan‐cetacean MHC amplicon sequencing panel developed and evaluated in combination with genome assemblies

Molecular Ecology Resources, Volume 24, Issue 5, July 2024.
Abstract The major histocompatibility complex (MHC) is a highly polymorphic gene family that is crucial in immunity, and its diversity can be effectively used as a fitness marker for populations. Despite this, MHC remains poorly characterised in non‐model species (e.g., cetaceans: whales, dolphins and porpoises) as high gene copy number variation ...
Dorothea Heimeier, Ellen C. Garland, Franca Eichenberger, Claire Garrigue, Adriana Vella, C. Scott Baker, Emma L. Carroll   +6 more
wiley   +1 more source

Occurrence of the Atlantic spotted dolphin, Stenella frontalis, in southern Abrolhos Bank, Brazil

Marine Biodiversity Records, 2013
daniel danilewicz, paulo h. ott, eduardo secchi, artur andriolo and alexandre zerbini Laboratorio de Ecologia e Conservacao de Mamiferos Marinhos (ECOMMAR), Universidade Estadual de Santa Cruz, Departamento de Ciencias Biologicas, Rodovia Ilheus/Itabuna, km 16, Ilheus, BA, 45662-900, Brazil, Instituto Aqualie, Rua Edgard Werneck 428/32, Rio de Janeiro,
Daniel Danilewicz, Paulo H. Ott, Eduardo Secchi, Artur Andriolo, Alexandre Zerbini   +4 more
openaire   +1 more source

Ultrasound images of the ascending aorta of anesthetized northern fur seals and Steller sea lions confirm that the aortic bulb maintains continuous blood flow

Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, Volume 341, Issue 4, Page 458-469, May 1, 2024.
Abstract The increased size and enhanced compliance of the aortic bulb—the enlargement of the ascending aorta—are believed to maintain blood flow in pinnipeds during extended periods of diastole induced by diving bradycardia. The aortic bulb has been described ex vivo in several species of pinnipeds, but in vivo measurements are needed to investigate ...
Rhea L. Storlund, David A. S. Rosen, Martin Haulena, Shubhayan Sanatani, Jessica Vander Zaag, Andrew W. Trites   +5 more
wiley   +1 more source

Contamination status by persistent organic pollutants of the Atlantic spotted dolphin (Stenella frontalis) at the metapopulation level

Environmental Pollution, 2018
The Atlantic spotted dolphin (Stenella frontalis) is an endemic species of the tropical-temperate Atlantic Ocean with widespread distribution. Although this species has been the subject of a large number of studies throughout its range, it remains in the "data deficient" category of the International Union for Conservation of Nature (IUCN).
Mendez-Fernandez, P., Taniguchi, S., Santos, M. C. O., Cascao, I., /Quérouil, Sophie, Martin, V., Tejedor, M., Carrillo, M., Rinaldi, C., Rinaldi, R., Montone, R. C.   +10 more
openaire   +3 more sources

Non‐invasive age estimation based on faecal DNA using methylation‐sensitive high‐resolution melting for Indo‐Pacific bottlenose dolphins

Molecular Ecology Resources, Volume 24, Issue 2, February 2024.
Abstract Age is necessary information for the study of life history of wild animals. A general method to estimate the age of odontocetes is counting dental growth layer groups (GLGs). However, this method is highly invasive as it requires the capture and handling of individuals to collect their teeth.
Genfu Yagi, Huiyuan Qi, Kana Arai, Yuki F. Kita, Kazunobu Kogi, Tadamichi Morisaka, Motoi Yoshioka, Miho Inoue‐Murayama   +7 more
wiley   +1 more source