Results 1 to 10 of about 434 (160)

Genomic architecture and population structure of Boreogadus saida from Canadian waters [PDF]

Scientific Reports
The polar cod, Boreogadus saida, is an abundant and ubiquitous forage fish and a crucial link in Arctic marine trophic dynamics. Our objective was to unravel layers of genomic structure in B.
Trevor T. Bringloe, Audrey Bourret, David Cote, Roux Marie-Julie, Jennifer Herbig, Dominique Robert, Maxime Geoffroy, Geneviève J. Parent   +7 more
doaj   +5 more sources

Gender specific reproductive strategies of an arctic key species (Boreogadus saida) and implications of climate change. [PDF]

PLoS ONE, 2014
The Arctic climate is changing at an unprecedented rate. What consequences this may have on the Arctic marine ecosystem depends to a large degree on how its species will respond both directly to elevated temperatures and more indirectly through ...
Jasmine Nahrgang, Oystein Varpe, Ekaterina Korshunova, Svetlana Murzina, Ingeborg G Hallanger, Ireen Vieweg, Jørgen Berge   +6 more
doaj   +6 more sources

Mitochondrial acclimation potential to ocean acidification and warming of Polar cod (Boreogadus saida) and Atlantic cod (Gadus morhua) [PDF]

Frontiers in Zoology, 2017
Background Ocean acidification and warming are happening fast in the Arctic but little is known about the effects of ocean acidification and warming on the physiological performance and survival of Arctic fish.
Elettra Leo, Kristina L. Kunz, Matthias Schmidt, Daniela Storch, Hans-O. Pörtner, Felix C. Mark   +5 more
doaj   +2 more sources

Distribution and habitat preference of polar cod (Boreogadus saida) in the Bering and Chukchi Seas inferred from species-specific detection of environmental DNA

Frontiers in Marine Science, 2023
Ongoing warming and sea-ice reductions in the Arctic can seriously impact cold-water species, such as polar cod (Boreogadus saida), necessitating biomonitoring to reveal the ecological consequences. Recent methodological advancements in environmental DNA
Akihide Kasai, Aya Yamazaki
exaly   +3 more sources

Top-Down and Bottom-Up Processes Jointly Explain Mesopredator Movement and Foraging Ecology. [PDF]

Ecol Lett
This study integrates top‐down (polar bear habitat selection) and bottom‐up (fish distribution) processes to test how mesopredators (ringed seals) balance risk–reward tradeoffs in habitat selection. Ringed seals reduced their space use and foraging time in response to predation risk, yet accepted higher risk when prey diversity was elevated ...
Florko KRN, Ross TR, Ferguson SH, Northrup JM, Obbard ME, Thiemann GW, Yurkowski DJ, Auger-Méthé M.   +7 more
europepmc   +2 more sources

Under-ice observations by trawls and multi-frequency acoustics in the Central Arctic Ocean reveals abundance and composition of pelagic fauna [PDF]

Scientific Reports, 2023
The rapid ongoing changes in the Central Arctic Ocean call for baseline information on the pelagic fauna. However, sampling for motile organisms which easily escape vertically towed nets is challenging.
Randi B. Ingvaldsen, Elena Eriksen, Harald Gjøsæter, Arill Engås, Birte Katarina Schuppe, Karen M. Assmann, Heather Cannaby, Padmini Dalpadado, Bodil A. Bluhm   +8 more
doaj   +2 more sources

The physiological response of the Arctic key species Polar cod, Boreogadus saida, to hypoxia in a warming ocean: critical oxygen levels and swimming performance [PDF]

BMC Zoology
Global warming has already caused a loss of nearly 50% Arctic sea-ice coverage since the 1980s. This sea-ice loss strengthens summer stratification of the ocean’s water column and, consequently, hypoxic zones may form in the deep-water layers.
Sarah Kempf, Carolin Julie Neven, Alexander Timpe, Félix P. Leiva, Brad Seibel, Felix Christopher Mark   +5 more
doaj   +2 more sources

Impact of Tusk Anomalies on the Long-Term Foraging Ecology of Narwhals. [PDF]

Ecol Evol
We combined stable δ13C and δ15N isotope analysis and genetic sexing to investigate whether narwhals with dental anomalies have a distinct long‐term foraging ecology. Our results showed no difference in stable isotope signature of two‐tusked male and one‐tusked female narwhals relative to normal‐tusked narwhals, indicating that an extra tusk does not ...
Louis M, Rey-Iglesia A, Routledge J, de Jager D, Skovrind M, Heide-Jørgensen MP, Kaiser TM, Kovacs KM, Lydersen C, Rosing-Asvid A, Szpak P, Lorenzen ED.   +11 more
europepmc   +2 more sources

Seasonal shifts in feeding patterns: Individual and population realized specialization in a high Arctic fish [PDF]

Ecology and Evolution, 2019
Species with a broad and flexible diet may be at an advantage in a rapidly changing environment such as in today's Arctic ecosystems. Polar cod (Boreogadus saida), an abundant and ecologically important circumpolar Arctic fish, is often described as a ...
Marine Cusa, Jørgen Berge, Øystein Varpe   +2 more
doaj   +2 more sources

Modeling Ringed and Bearded Seal Future Habitats Indicates Stability, Shifts, and Refugia. [PDF]

Glob Chang Biol
Every year, ringed seals and bearded seals rely on specific ice and snow conditions to support events such as feeding or reproduction. With Earth System Models, we simulate habitat over 1850–2100, revealing a relatively stable past habitat contrasting with rapid regional shifts in contemporary simulations and future projections.
Farnole P, Ferguson SH, Haddon A, Lea EV, Monahan AH, Steiner N.   +5 more
europepmc   +2 more sources