Results 1 to 10 of about 142,562 (156)

The effects of climate change on harp seals (Pagophilus groenlandicus). [PDF]

open access: yesPLoS ONE, 2012
Harp seals (Pagophilus groenlandicus) have evolved life history strategies to exploit seasonal sea ice as a breeding platform. As such, individuals are prepared to deal with fluctuations in the quantity and quality of ice in their breeding areas.
David W Johnston   +3 more
doaj   +3 more sources

The Evolutionary History of the Extinct Baltic Sea Harp Seal Population [PDF]

open access: yesEcology and Evolution
The now‐extinct harp seal population that inhabited the Baltic Sea from the Mesolithic to the Iron Age is an enigma. It occurred outside the species' contemporary Arctic range, likely deviated from typical harp seal migratory behaviour, and experienced ...
Maiken Hemme Bro‐Jørgensen   +7 more
doaj   +2 more sources

The significance of shooting angle in seal shooting [PDF]

open access: yesAnimal Welfare
The present study aimed to investigate the relationship between shooting angle to the head and animal welfare outcomes in the hunt of young harp seals (Pagophilus groenlandicus).
Kathrine A Ryeng, Stig E Larsen
doaj   +2 more sources

Does salinity make a difference-Kidney anatomy of Saimaa (Pusa saimensis) and Baltic ringed seals (Pusa hispida botnica). [PDF]

open access: yesAnat Rec (Hoboken)
Abstract As habitat salinity markedly differs between the endangered, freshwater‐dwelling Saimaa ringed seal (Pusa saimensis Nordquist, 1899) and the brackish water‐inhabiting Baltic ringed seal (Pusa hispida botnica Gmelin, 1788), we investigated whether this difference has resulted in morphological changes to their kidneys.
Nihtilä H, Laakkonen J.
europepmc   +2 more sources

Elevated antioxidant defence in the brain of deep-diving pinnipeds [PDF]

open access: yesFrontiers in Physiology, 2022
While foraging, marine mammals undertake repetitive diving bouts. When the animal surfaces, reperfusion makes oxygen readily available for the electron transport chain, which leads to increased production of reactive oxygen species and risk of oxidative ...
Gerrit A. Martens   +3 more
doaj   +2 more sources

Quantitative Phylogenomics of Within-Species Mitogenome Variation: Monte Carlo and Non-Parametric Analysis of Phylogeographic Structure among Discrete Transatlantic Breeding Areas of Harp Seals (Pagophilus groenlandicus). [PDF]

open access: yesPLoS ONE, 2015
Phylogenomic analysis of highly-resolved intraspecific phylogenies obtained from complete mitochondrial DNA genomes has had great success in clarifying relationships within and among human populations, but has found limited application in other wild ...
Steven M Carr   +3 more
doaj   +2 more sources

Hematologic and plasma biochemical prognostic indicators for stranded free-ranging phocids presented for rehabilitation [PDF]

open access: yesScientific Reports, 2022
This retrospective study used data obtained from medical records of 530 stranded free-ranging harbor (Phoca vitulina), grey (Halichoerus grypus), harp (Pagophilus groenlandicus), and hooded seals (Cystophora cristata) presented to the Marine Mammal ...
Matthew Vail   +5 more
doaj   +2 more sources

A model for maxilloturbinate morphogenesis in seals. [PDF]

open access: yesPLoS ONE
The nasal cavities of mammals contain the maxilloturbinate bones, which are involved in reducing heat and water losses. The maxilloturbinates of Arctic seals develop into particularly elaborate labyrinthine patterns, which are well adapted to retain heat
Jonathan E Kings   +6 more
doaj   +2 more sources

Large Igneous Province Record Through Time and Implications for Secular Environmental Changes and Geological Time‐Scale Boundaries

open access: yesGeophysical Monograph Series, Page 1-26., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Richard E. Ernst   +8 more
wiley  

+2 more sources

Multi-dietary tracer approach reveals little overlap in foraging ecology between seasonally sympatric ringed and harp seals in the high Arctic

open access: yesFrontiers in Marine Science, 2022
The rapid rate of climate change in the Arctic is causing broad-scale changes to the physical environment and biological communities. Characterizing the foraging ecology and habitat use of Arctic marine top predators of high ecological and cultural ...
Jean-Pierre Desforges   +10 more
doaj   +1 more source

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