Results 11 to 20 of about 357 (144)

Entry and elimination of marine mammal Brucella spp. by hooded seal (Cystophora cristata) alveolar macrophages in vitro. [PDF]

PLoS ONE, 2013
A high prevalence of Brucellapinnipedialis serology and bacteriology positive animals has been found in the Northeast Atlantic stock of hooded seal (Cystophoracristata); however no associated gross pathological changes have been identified. Marine mammal
Anett K Larsen, Ingebjørg H Nymo, Preben Boysen, Morten Tryland, Jacques Godfroid   +4 more
doaj   +2 more sources

Transcriptome Analysis Identifies Key Metabolic Changes in the Hooded Seal (Cystophora cristata) Brain in Response to Hypoxia and Reoxygenation. [PDF]

PLoS ONE, 2017
The brain of diving mammals tolerates low oxygen conditions better than the brain of most terrestrial mammals. Previously, it has been demonstrated that the neurons in brain slices of the hooded seal (Cystophora cristata) withstand hypoxia longer than ...
Mariana Leivas Müller Hoff, Andrej Fabrizius, Nicole U Czech-Damal, Lars P Folkow, Thorsten Burmester   +4 more
doaj   +2 more sources

Transcriptomes Suggest That Pinniped and Cetacean Brains Have a High Capacity for Aerobic Metabolism While Reducing Energy-Intensive Processes Such as Synaptic Transmission [PDF]

Frontiers in Molecular Neuroscience, 2022
The mammalian brain is characterized by high energy expenditure and small energy reserves, making it dependent on continuous vascular oxygen and nutritional supply. The brain is therefore extremely vulnerable to hypoxia. While neurons of most terrestrial
Cornelia Geßner, Alena Krüger, Lars P. Folkow, Wilfrid Fehrle, Bjarni Mikkelsen, Thorsten Burmester   +5 more
doaj   +2 more sources

A new seal from the Late Miocene of the Eastern Paratethys highlights the past regional diversity of true seals (Phocidae) [PDF]

Swiss Journal of Palaeontology
True seals rapidly evolved in many forms in the epicontinental basin of Paratethys during the Miocene. However, most of their nominal taxa so far were proposed based on isolated limb bones, and their taxonomy has long been under discussion.
Pavlo Otriazhyi, Theodor Obadă, Oleksandr Kovalchuk, Davit Vasilyan, Pavel Gol’din   +4 more
doaj   +2 more sources

A review of Brucella infection in marine mammals, with special emphasis on Brucella pinnipedialis in the hooded seal (Cystophora cristata) [PDF]

Veterinary Research, 2011
Brucella spp. were isolated from marine mammals for the first time in 1994. Two novel species were later included in the genus; Brucella ceti and Brucella pinnipedialis, with cetaceans and seals as their preferred hosts, respectively. Brucella spp.
Nymo Ingebjørg H, Tryland Morten, Godfroid Jacques   +2 more
doaj   +2 more sources

Intra‐species differences in impacts of climate change: A case study of the hooded seal (Cystophora cristata)

Ecosphere
The Arctic is warming nearly four times faster than the global average, but the rate of change is not uniform across the region. Wide‐ranging Arctic species are exposed to variable environmental conditions across their range, but it remains unclear how ...
Jade Vacquié‐Garcia, Kit M. Kovacs, Christian Lydersen, Arnoldus S. Blix, Lars P. Folkow, Tore Haug, Martin Biuw, Marianna Chimienti, Jérôme Spitz, Tiphaine Jeanniard du Dot   +9 more
doaj   +2 more sources

Potential for flexible lactate shuttling between astrocytes and neurons to mitigate against diving-induced hypoxia [PDF]

Frontiers in Neuroanatomy
For most non-diving mammals, lack of O2 (hypoxia) has detrimental effects on brain function. Seals, however, display a series of systemic, cellular, and molecular adaptations that enable them to tolerate repeated episodes of severe hypoxia.
Chiara Ciccone, Sari Elena Dötterer, Sigrid Vold Jensen, Cornelia Geßner, Alexander C. West, Shona H. Wood, David G. Hazlerigg, Lars P. Folkow   +7 more
doaj   +2 more sources

Space‐use strategies drive diet composition of Baffin Bay polar bears

Ecosphere
Polar bears (Ursus maritimus) depend on sea ice to hunt their ice‐associated prey. However, climate‐induced sea ice loss is leading to changes in space‐use strategies of polar bears, with bears in some subpopulations spending more time on land or ...
Jennifer H. Stern, Kristin L. Laidre, Erik W. Born, Øystein Wiig, Melissa A. McKinney   +4 more
doaj   +2 more sources

Brucella pinnipedialis in hooded seal (Cystophora cristata) primary epithelial cells. [PDF]

Acta Vet Scand, 2016
Marine Brucella spp. have been isolated from numerous pinniped and cetacean species, but pathological findings in association with infection with Brucella pinnipedialis in pinnipeds have been sparse. The capacity of brucellae to survive and replicate within host macrophages underlies their important ability to produce chronic infections, but previous ...
Larsen AK, Godfroid J, Nymo IH.
europepmc   +5 more sources

Observation of marine mammal and bird interactions focused around a commercial fishing vessel in central Baffin Bay, Nunavut

Arctic Science, 2021
A detailed account of a variety of species foraging on Greenland halibut (Reinhardtius hippoglossoides (Walbaum, 1792)) fisheries discards associated with a commercial fishing vessel in central Baffin Bay, Nunavut, Canada is presented.
Kelsey F. Johnson, Nigel E. Hussey, Steven H. Ferguson   +2 more
doaj   +1 more source