Results 111 to 120 of about 47,022 (294)

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

Marine Mammal Science, EarlyView.
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

Indo-Pacific bottlenose dolphin (Tursiops aduncus) habitat preference in a heterogeneous, urban, coastal environment

Aquatic Biosystems, 2013
BackgroundLimited information is available regarding the habitat preference of the Indo-Pacific bottlenose dolphin (Tursiops aduncus) in South Australian estuarine environments.
Nardi Cribb, Cara Miller, L. Seuront
semanticscholar   +1 more source

Characterizing Fraser's Dolphin (Lagenodelphis hosei) in the Lesser Antilles: Distribution, Movements, and Co‐Occurrence With Other Cetacean Species to Inform Conservation Strategies in the Caribbean

Marine Mammal Science, EarlyView.
ABSTRACT Fraser's dolphin (Lagenodelphis hosei) is one of the least studied dolphin species due to its tropical, offshore distribution and low density. However, it is frequently observed in the Lesser Antilles, where we characterized its distribution and ecology using 4 years of data collected from Grenada to Anguilla.
Lucas Bernier, Rocío Prieto González, Christopher Hassall, Valentin Teillard, Jeffrey Bernus   +4 more
wiley   +1 more source

Forest fire smoke as a threat to the health of river dolphins

Conservation Biology, EarlyView.
Enzo Aliaga‐Rossel, David Edinger, Miriam Marmontel, Luis Guizada Duran, Andreas Fahlman   +4 more
wiley   +1 more source

Salivary Cortisol as a Measure of Acute Stress and Diurnal Adrenal Activity in Bottlenose Dolphins

Marine Mammal Science, EarlyView.
ABSTRACT Monitoring changes to animals' physiological states in managed settings is critical in modern animal welfare assessment. Under human care, marine mammals can be conditioned for voluntary biological sample collection, reducing effects of handling stress on physiological state, thus better reflecting normal physiology.
Bella Charlton, Janet M. Lanyon, Claire Madden, Wayne Phillips, Tamara Keeley   +4 more
wiley   +1 more source

Drone‐Based Photogrammetry Provides Estimates of the Energetic Cost of Migration for Humpback Whales Between Antarctica and Colombia

Marine Mammal Science, EarlyView.
ABSTRACT Monitoring the body condition of animals offers insights into their energetic needs, prey consumption, and vulnerability to environmental pressures. Southern hemisphere humpback whales (Megaptera novaeangliae) depend on Antarctic krill for their annual energy requirements.
Alexandre Bernier‐Graveline, Susan Bengtson Nash, K. C. Bierlich, Ari Friedlaender, David W. Johnston, Juliana Castrillon, Natalia Botero‐Acosta, Susana Caballero, Fredrik Christiansen   +8 more
wiley   +1 more source

Foraging ecology of common dolphins (Delphinus sp.) in the Hauraki Gulf, New Zealand : a thesis presented in fulfilment of the requirements for the degree of Master of Science (Zoology), Massey University, Albany, New Zealand [PDF]

, 2006
This study investigated the foraging ecology of common dolphins (Delphinus sp.) in the Hauraki Gulf Marine Park, off the east coast of Auckland. New Zealand.
Burgess, Elizabeth A
core  

Evidence for a Decrease in Vocalizations During Bubble Burst Production in Atlantic Bottlenose Dolphins (Tursiops truncatus)

Marine Mammal Science, EarlyView.
ABSTRACT In Atlantic bottlenose dolphins, prior work has suggested that whistle vocalizations often have been observed to co‐occur with one bubble type, the bubble stream. However, vocal correlates have not been identified for another type of bubble, the bubble burst. While watching research session recordings, we serendipitously observed an absence of
Emma C. Miller, Christianna D. Royse, Christine R. Harris, Christine M. Johnson   +3 more
wiley   +1 more source

First At‐Sea Identifications of Ginkgo‐Toothed Beaked Whale (Mesoplodon ginkgodens): Acoustics, Genetics, and Biological Observations Off Baja California, México

Marine Mammal Science, EarlyView.
ABSTRACT In 2024, an expedition was conducted off northwestern Baja California, México, to find and identify the beaked whale species that produced the BW43 echolocation pulse previously recorded in this area and elsewhere in the North Pacific. There were five Mesoplodon sightings and 21 BW43 acoustic detections on both a towed array and drifting pole ...
E. Elizabeth Henderson, Lisa T. Ballance, Gustavo Cárdenas‐Hinojosa, Jay Barlow, Annamaria I. DeAngelis, Sergio Martínez‐Aguilar, Craig Hayslip, L. Todd Pusser, Mario Márquez Segovia, C. Scott Baker, Debbie Steel, Rodrigo Huerta‐Patiño, Luis Manuel Enriquez Paredes, Robert L. Brownell Jr, Robert L. Pitman   +14 more
wiley   +1 more source

Bottlenose Dolphins, Tursiops truncatus, Removing By-catch from Prawn-trawl Codends During Fishing in New South Wales, Australia [PDF]

, 1998
During a fishing trip to record video footage of fish escaping from a by-catch reducing device located in a commercial prawn trawl, two bottlenose dolphins, Tursiops truncatus, were observed to actively manipulate the codend at the seabed, removing and ...
Broadhurst, M. K.
core