Results 61 to 70 of about 45,211 (261)

Tour boats affect the activity patterns of bottlenose dolphins (Tursiops truncatus) in Bocas del Toro, Panama [PDF]

PeerJ, 2020
Bottlenose dolphins (Tursiops truncatus) of the Bocas del Toro archipelago are targeted by the largest boat-based cetacean watching operation in Panama. Tourism is concentrated in Dolphin Bay, home to a population of resident dolphins.
Ayshah Kassamali-Fox, Fredrik Christiansen, Laura J. May-Collado, Eric A. Ramos, Beth A. Kaplin   +4 more
doaj   +2 more sources

Comparisons of Serum Progesterone and Progestagen Concentrations in Normal and Abnormal Bottlenose Dolphin (Tursiops truncatus) Pregnancies

Frontiers in Marine Science, 2021
Although previous studies have described progesterone profiles during pregnancy in the bottlenose dolphin (Tursiops truncatus), most of these focused on normal pregnancy (NORM) or compared NORM to only one or two abnormal pregnancy types, such as ...
Todd R. Robeck, Karen J. Steinman, Celeste B. Parry, Forrest M. Gomez, Eric D. Jensen   +4 more
doaj   +1 more source

Hearing abilities and acoustic signalization of the bottlenose dolphin Tursiops Truncatus with early hearing loss

Frontiers in Marine Science
Common bottlenose dolphins (Tursiops truncatus) are among non-human mammals that possess the ability for vocal production learning, which strongly depends on learning from conspecifics. The hearing sensitivity and acoustic signals of a 4-year-old captive-
Evgeniya Sysueva, Irina Sidorova, Irina Suvorova, Alexander Supin, Dmitry Nechaev, Alexandra Tkachenko, Vladimir Popov   +6 more
doaj   +1 more source

Anthropogenic noise impairs cooperation in bottlenose dolphins

Current Biology, 2023
Understanding the impact of human disturbance on wildlife populations is of societal importance,1 with anthropogenic noise known to impact a range of taxa, including mammals,2 birds,3 fish,4 and invertebrates.5 While animals are known to use acoustic and other behavioral mechanisms to compensate for increasing noise at the individual level, our ...
Pernille M. Sørensen, Abigail Haddock, Emily Guarino, Kelly Jaakkola, Christina McMullen, Frants H. Jensen, Peter L. Tyack, Stephanie L. King   +7 more
openaire   +5 more sources

A contribution to the anatomy of two rare cetacean species: The hourglass dolphin (Cephalorhynchus cruciger) and the spectacled porpoise (Phocoena dioptrica)

The Anatomical Record, EarlyView.
Abstract The anatomical description of the hourglass dolphin (Cephalorhynchus cruciger) and the spectacled porpoise (Phocoena dioptrica) remains largely unexplored, due to limited specimen availability and preservation challenges. This study employed digital imaging techniques, conventional histology, and computed tomography to provide visualization of
Jean‐Marie Graïc, Tommaso Gerussi, Bruno Cozzi, Rebecca M. Boys, Brian Chin Wing Kot, Matthew R. Perrott, Kane Fleury, Tabris Yik To Chung, Henry Chun Lok Tsui, Emma Burns, Trudi Webster, Stuart Hunter, Emma L. Betty, Odette Howarth, Carolina Loch, Sophie White, Steve Dawson, William Rayment, Ros Cole, Derek Cox, Tom Waterhouse, Hannah Hendriks, Anton van Helden, Muriel Johnstone, Ramari Oliphant Stewart, R. Ewan Fordyce, Karen A. Stockin   +26 more
wiley   +1 more source

Eavesdropping on dolphins: Investigating the habits of bottlenose dolphins (Tursiops truncatus) through fixed acoustic stations.

PLoS ONE, 2019
This study investigates the bottlenose dolphin (Tursiops truncatus, Montagu 1821) habitat use in the Portofino marine protected area (NW Italy) and adjacent waters, a core area for the dolphins and a highly touristic area in the Mediterranean Sea.
Jessica Alessi, Alberta Mandich, Maurizio Wurtz, Chiara Paoli, Carlo Nike Bianchi, Carla Morri, Paolo Povero, Marco Brunoldi, Giorgio Bozzini, Alessandra Casale, Daniele Grosso, Valentina Cappanera, Giorgio Fanciulli, Christian Melchiorre, Gianni Viano, Massimiliano Bei, Nicola Stasi, Mauro Gino Taiuti, Paolo Vassallo   +18 more
doaj   +1 more source

Temporal changes in the dietary niche of sympatric seals provides insight into the role of competition in population declines

Oikos, EarlyView.
Competition theory suggests that interspecific prey competition can result in changes to the dietary niche, but obtaining timeseries of data from sympatric species experiencing temporal variation in competition is challenging. Scotland is an important area for two species of seals, but over the past 20 years, populations of harbour seals Phoca vitulina
Izzy Langley, Philip S. Hammond, Paul M. Thompson, Graham J. Pierce, Lindsay J. Wilson, Ailsa J. Hall, Gordon D. Hastie, Debbie J. F. Russell   +7 more
wiley   +1 more source

Why do dolphins form mixed-species associations in the Azores ?

, 2008
Mixed-species associations are temporary associations between individuals of different species that are often observed in birds, primates and cetaceans.
Bearzi, Bearzi, Bruno, Clua, Connor, Doksaeter, Frantzis, Garcia, Gautier-Hion, Gonçalves, Gowans, Herzing, Herzing, Heymann, Johnson, Lourenço, Martin, Maze-Foley, Morato, Morato, Morse, Norris, Norris, Perrin, Pianka, Psarakos, R Development Core Team, Roughgarden, Roussel, Santos, Scott, Silva, Spitz, Steiner, Stensland, Sullivan, Terborgh, Waser, Waser, Whitesides   +39 more
core   +4 more sources

Temporal patterns in acoustic presence and foraging activity of oceanic dolphins at seamounts in the Azores [PDF]

, 2020
© The Author(s), 2020. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Cascao, I., Lammers, M. O., Prieto, R., Santos, R. S., & Silva, M. A.
Cascão, Irma, Lammers, Marc O., Prieto, Rui, Santos, Ricardo S., Silva, Monica A.   +4 more
core   +1 more source

Social and vocal complexity in bottlenose dolphins

Trends in Neurosciences, 2022
Bottlenose dolphins are highly social, renowned for their vocal flexibility, and possess highly enlarged brains relative to their body size. Here, we discuss some of the defining features of bottlenose dolphin social and vocal complexity and place this in the context of their cognitive evolution.
Stephanie L. King, Richard C. Connor, Stephen H. Montgomery   +2 more
openaire   +3 more sources