Results 11 to 20 of about 256 (101)

Reappraisal of the extinct seal "Phoca" vitulinoides from the Neogene of the North Sea Basin, with bearing on its geological age, phylogenetic affinities, and locomotion. [PDF]

PeerJ, 2017
Background: Discovered on the southern margin of the North Sea Basin, "Phoca" vitulinoides represents one of the best-known extinct species of Phocidae.
Dewaele L, Amson E, Lambert O, Louwye S.
europepmc   +7 more sources

Reduction of Paraoxonase Expression Followed by Inactivation across Independent Semiaquatic Mammals Suggests Stepwise Path to Pseudogenization. [PDF]

Mol Biol Evol, 2023
Convergent adaptation to the same environment by multiple lineages frequently involves rapid evolutionary change at the same genes, implicating these genes as important for environmental adaptation. Such adaptive molecular changes may yield either change
Graham AM, Jamison JM, Bustos M, Cournoyer C, Michaels A, Presnell JS, Richter R, Crocker DE, Fustukjian A, Hunter ME, Rea LD, Marsillach J, Furlong CE, Meyer WK, Clark NL.   +14 more
europepmc   +3 more sources

Biogeography and taxonomy of extinct and endangered monk seals illuminated by ancient DNA and skull morphology. [PDF]

Zookeys, 2014
Extinctions and declines of large marine vertebrates have major ecological impacts and are of critical concern in marine environments. The Caribbean monk seal, Monachus tropicalis, last definitively reported in 1952, was one of the few marine mammal ...
Scheel DM, Slater GJ, Kolokotronis SO, Potter CW, Rotstein DS, Tsangaras K, Greenwood AD, Helgen KM.   +7 more
europepmc   +8 more sources

Mediterranean monk seal (Monachus monachus) and leopard seal (Hydrurga leptonyx) de novo genomes to study the demographic history and genetic diversity of southern seals [PDF]

BMC Biology
Background The Monachinae, or southern seals, are one of two subfamilies within the Phocidae and are home to iconic pinnipeds such as the leopard seal, a fierce Antarctic top predator, and the Mediterranean monk seal, one of the world’s most endangered ...
Marcel Nebenführ, Alexander Ben Hamadou, Alex Aguilar, Asunción Borrell, Georgios A. Gkafas, Axel Janke   +5 more
doaj   +2 more sources

First Insights into the Home Range of an Adult Male Mediterranean Monk Seal Monachus monachus in the Ionian Sea, Greece, and Considerations About the Future Management of the Area [PDF]

Animals
From August 2021 to December 2023, one adult male Mediterranean monk seal was repeatedly registered, through a systematic monitoring camera system, frequenting a marine cave in southern Kefalonia Island, central Ionian Sea, Greece.
Aliki Panou, Spyros Tsoukalas, Anastasios Anestis, Luigi Bundone   +3 more
doaj   +2 more sources

Pinniped (Carnivora, Phocidae) occurrences in the Azores Archipelago (NE Atlantic). [PDF]

Biodivers Data J, 2022
BACKGROUND: The last Pinniped species update was in 2010, as part of the list of the terrestrial and marine biota from the Azores. This list includes a chapter dedicated to marine mammals, based on previously published bibliography.
Barcelos LMD, Barreiros JP.
europepmc   +5 more sources

Reference genome of the leopard seal (<i>Hydrurga leptonyx</i>), a Southern Ocean apex predator. [PDF]

Front Genet
Apex predators play a key role in maintaining ecosystem structure and functions (Ripple et al., 2014; Estes et al., 2016; Enquist et al., 2020). They exert top-down control on food webs, affecting nutrient and carbon cycles, modifying habitats, and ...
Canitz J, Kienle SS, van der Linde K, Borras-Chavez R, Sperou ES, Leahy A, Rivera S, Autenrieth M, Hoffman JI, Bonin CA.   +9 more
europepmc   +3 more sources

Karyotype Evolution in 10 Pinniped Species: Variability of Heterochromatin versus High Conservatism of Euchromatin as Revealed by Comparative Molecular Cytogenetics. [PDF]

Genes (Basel), 2020
Pinnipedia karyotype evolution was studied here using human, domestic dog, and stone marten whole-chromosome painting probes to obtain comparative chromosome maps among species of Odobenidae (Odobenus rosmarus), Phocidae (Phoca vitulina, Phoca largha ...
Beklemisheva VR, Perelman PL, Lemskaya NA, Proskuryakova AA, Serdyukova NA, Burkanov VN, Gorshunov MB, Ryder O, Thompson M, Lento G, O'Brien SJ, Graphodatsky AS.   +11 more
europepmc   +3 more sources

New species of Ontocetus (Pinnipedia: Odobenidae) from the Lower Pleistocene of the North Atlantic shows similar feeding adaptation independent to the extant walrus (Odobenus rosmarus). [PDF]

PeerJ
Ontocetus is one of the most notable extinct odobenines owing to its global distribution in the Northern Hemisphere. Originating in the Late Miocene of the western North Pacific, this lineage quickly spread to the Atlantic Ocean during the Pliocene, with
Boisville M, Chatar N, Kohno N.
europepmc   +4 more sources

Phocid seal leptin: tertiary structure and hydrophobic receptor binding site preservation during distinct leptin gene evolution. [PDF]

PLoS One, 2012
The cytokine hormone leptin is a key signalling molecule in many pathways that control physiological functions. Although leptin demonstrates structural conservation in mammals, there is evidence of positive selection in primates, lagomorphs and ...
Hammond JA, Hauton C, Bennett KA, Hall AJ.   +3 more
europepmc   +5 more sources