Results 21 to 30 of about 10,503 (218)

Are Dolphins Kept in Impoverished Environments?

Animals, 2023
Numerous studies have demonstrated the negative effects of impoverished environments versus the positive effects of enriched environments on animals’ cognitive and neural functioning.
Kelly Jaakkola
doaj   +1 more source

The dopamine receptor D5 gene shows signs of independent erosion in toothed and baleen whales [PDF]

PeerJ, 2019
To compare gene loci considering a phylogenetic framework is a promising approach to uncover the genetic basis of human diseases. Imbalance of dopaminergic systems is suspected to underlie some emerging neurological disorders. The physiological functions
Luís Q. Alves, Juliana Alves, Rodrigo Ribeiro, Raquel Ruivo, Filipe Castro   +4 more
doaj   +2 more sources

Astrocyte properties in cetacean cortices. [PDF]

Physiol Rep
Abstract Cetacean neurons are far more extensively studied in the scientific literature than the other principal cell type of the central nervous system—glia. To help address this knowledge gap, the current study profiled astrocytes in five cetacean species—Tursiops truncatus (Tt), Orcinus orca (Oo), Ziphius cavirostris (Zc), Pseudorca crassidens (Pc),
Venkatesh A, McClain AM, Le-Bert CR, Musser WB, Ridgway SH.   +4 more
europepmc   +2 more sources

Diving on damage—the muscle transcriptome of parasitic infested harbor porpoises (Phocoena phocoena) hints at oxidative stress but not hypoxia

Frontiers in Marine Science, 2023
The only native cetacean in German waters, the harbor porpoise (Phocoena phocoena), is impacted by numerous pathological lesions in the respiratory tract mainly caused by parasites or bacteria.
Eda Merve Dönmez, Eda Merve Dönmez, Ursula Siebert, Andrej Fabrizius   +3 more
doaj   +1 more source

Borealodon osedax, a new stem mysticete (Mammalia, Cetacea) from the Oligocene of Washington State and its implications for fossil whale-fall communities [PDF]

Royal Society Open Science, 2019
Baleen whales (mysticetes) lack teeth as adults and instead filter feed using keratinous baleen plates. They do not echolocate with ultrasonic frequencies like toothed whales but are instead known for infrasonic acoustics.
B. K. Shipps, Carlos Mauricio Peredo, Nicholas D. Pyenson   +2 more
doaj   +1 more source

Diversity and Consequences of Social Network Structure in Toothed Whales

Frontiers in Marine Science, 2021
Toothed whales (suborder Odontoceti) are highly social, large brained mammals with diverse social systems. In recent decades, a large body of work has begun investigating these dynamic, complex societies using a common set of analytical tools: social ...
Michael N. Weiss, Michael N. Weiss, Samuel Ellis, Darren P. Croft   +3 more
doaj   +1 more source

Size Disparity in Putative Primate Adaptive Radiations and Other Mammalian Clades. [PDF]

Am J Biol Anthropol
ABSTRACT Introduction Adaptive radiation is commonly viewed as the rapid production of phenotypic disparity and taxonomic diversity. Among primates, two clades have been identified as potential adaptive radiations: the lemurs of Madagascar and the platyrrhines of the Americas. This study examines these clades for one of the proposed signals of adaptive
Scott JE.
europepmc   +2 more sources

No leading‐edge effect in North Atlantic harbor porpoises: Evolutionary and conservation implications

Evolutionary Applications, 2021
Understanding species responses to past environmental changes can help forecast how they will cope with ongoing climate changes. Harbor porpoises are widely distributed in the North Atlantic and were deeply impacted by the Pleistocene changes with the ...
Yacine Ben Chehida, Roisin Loughnane, Julie Thumloup, Kristin Kaschner, Cristina Garilao, Patricia E. Rosel, Michael C. Fontaine   +6 more
doaj   +1 more source

Sightings of <em>Delphinus delphis</em> (Cetacea, Odontoceti) in the Otranto Channel (Southern Adriatic Sea and Northern Ionian Sea) / Avvistamenti di <em>Delphinus delphis</em> (Cetacea, Odontoceti) nel Canale d'Otranto (Mar Adriatico Meridionale e Mar Ionio Settentrionale)

Hystrix, the Italian Journal of Mammalogy, 1992
<strong>Abstract</strong> Two sightings of Common dolphin <em>Delphinus delphis</em> in the Channel of Otranto are reported, and the status of this species in the Mediterranean Sea is briefly discussed.
Francesco Maria Angelici, Luca Marini
doaj   +1 more source

Are white-beaked dolphins Lagenorhynchus albirostris food specialst? Their diet in the southern North Sea [PDF]

, 2010
The white-beaked dolphin Lagenorhynchus albirostris is the most numerous cetacean after the harbour porpoise Phocoena phocoena in the North Sea, including Dutch coastal waters.
Jansen, O.E., Leopold, M.F., Meesters, H.W.G., Smeenk, C.   +3 more
core   +2 more sources