Results 41 to 50 of about 4,578 (167)

Sharing Is Caring?—Pathogens and Pathogen‐Specific Antibodies in Arctic Endemic Seal Species and the Newly Sympatric Harbor Seals in Kongsfjorden, Svalbard

Marine Mammal Science, Volume 42, Issue 2, April 2026.
ABSTRACT Climate change associated transformations of Arctic marine ecosystems are having detrimental impacts on Arctic endemic marine mammals. However, warming conditions are providing new habitats for temperate marine mammals, some of which are expanding into Arctic regions, posing a threat of novel pathogen introduction and disease transmission.
Luca A. Schick, Kit M. Kovacs, Christian Lydersen, Simon Rohner, Ellen Prenger‐Berninghoff, Carsten Heydel, Christa Ewers, Alexander Postel, Nele Gremmel, Paul Becher, Christina Strube, Ursula Siebert   +11 more
wiley   +1 more source

Circumpolar Population Structure, Diversity and Recent Evolutionary History of the Bearded Seal in Relation to Past and Present Icescapes

Molecular Ecology, Volume 34, Issue 4, February 2025.
ABSTRACT The Arctic environment plays a critical role in the global climate system and marine biodiversity. The region's ice‐covered expanses provide essential breeding and feeding grounds for a diverse assemblage of marine species, who have adapted to thrive in these harsh conditions and consequently are under threat from global warming.
Morgan L. McCarthy, Alba Refoyo Martínez, Steven H. Ferguson, Aqqalu Rosing‐Asvid, Rune Dietz, Binia De Cahsan, Lennart Schreiber, Eline D. Lorenzen, Rikke Guldborg Hansen, Raphaela Stimmelmayr, Anna Bryan, Lori Quakenbush, Christian Lydersen, Kit M. Kovacs, Morten Tange Olsen   +14 more
wiley   +1 more source

Trophic interactions of meso- and macrozooplankton and fish in the Iceland Sea as evaluated by fatty acid and stable isotope analysis [PDF]

, 2012
A trophic study was carried out in August of 2007 and 2008 on the pelagic ecosystem in the Subarctic Iceland Sea. Carbon and nitrogen stable isotopes and fatty acid biomarkers were used to study trophic linkages and the trophic ecology of the most ...
Falk Petersen, Stig, Gislason, Astthor, Petursdottir, Hildur, Falk-petersen, Stig   +3 more
core   +1 more source

Radiocarbon dates from the Netherlands and Doggerland as a proxy for vegetation and faunal biomass between 55 and 5 ka cal bp

Journal of Quaternary Science, Volume 39, Issue 2, Page 248-260, February 2024.
ABSTRACT Three hundred forty‐one radiocarbon dates from the Groningen radiocarbon database are compiled in this study. They show for the first time that organic sediment samples from the eastern Netherlands and mammal bones from Doggerland reflect shifts in the presence and the density of vegetation (food for herbivores) and mammal biomass during the ...
B. Van Geel, J. Van Der Plicht, C. Kasse, D. Mol   +3 more
wiley   +1 more source

Evaluating hybrid speciation and swamping in wild carnivores with a decision‐tree approach

Conservation Biology, Volume 38, Issue 1, February 2024.
Abstract Hybridization is an important evolutionary force with a principal role in the origin of new species, known as hybrid speciation. However, ongoing hybridization can create hybrid swamping, in which parental genomes are completely lost. This can become a biodiversity threat if it involves species that have adapted to certain environmental ...
Laura Tensen, Klaus Fischer
wiley   +1 more source

Genetic variation between populations of the harp seal,Phoca groenlandica [PDF]

ICES Journal of Marine Science, 1996
Liver and muscle tissue collected from harp seals (Phoca groenlandica) in the Newfoundland area were analysed by isoelectric focusing of five known variable enzyme systems. Allele frequencies were compared with corresponding frequencies previously recorded in north-east Atlantic samples. Muscle tissue collected from harp seals in the White Sea area and
openaire   +1 more source

Morphology of the cornea and iris in the Australian lungfish Neoceratodus forsteri (Krefft 1870) (Dipnoi): Functional and evolutionary perspectives of transitioning from an aquatic to a terrestrial environment

Journal of Morphology, Volume 285, Issue 1, January 2024.
The Australian lungfish, Neoceratodus forsteri, is the earliest branching species of extant lungfishes having changed little over the last 100 million years and is thought to be a key species for the fish–tetrapod transition. This ultrastructural study of the cornea reveals it is not split into dermal and scleral components and is similar to that of ...
Hermann Barry Collin, Julian Ratcliffe, Shaun P. Collin   +2 more
wiley   +1 more source

Investigating annual diving behaviour by Hooded seals (Cystophora cristata) within the Northwest Atlantic Ocean [PDF]

, 2013
This work was funded through the Atlantic Seal Research Programme, International Governance Programme (DFO), the Greenland Institute of Natural Resources, and a CFI grant to YFW. The authors also acknowledge the support of the Marine Alliance for Science
Skern-Mauritzen Mette, Boehme Lars, Hammill Mike O., Mette Skern-Mauritzen (211823), Yolanda F. Wiersma (489222), Andersen, Julie Marie, Wiersma, Yolanda, Yolanda F Wiersma, Lars Boehme (292266), Hammill, Mike O., Boehme, Lars, Stenson, Garry B., Rosvig-Asvid, Aqqalu, Wiersma Yolanda F., Hammill, Mike, Wiersma, Yolanda F., Garry B Stenson, Garry B. Stenson (292271), Stenson Garry B., Mike O Hammill, Aqqalu Rosing-Asvid (489223), Rosing-Asvid Aqqalu, Stenson, Garry, Mette Skern-Mauritzen, Skern-Mauritzen, Mette, Aqqalu Rosing-Asvid, Julie M Andersen, Julie M. Andersen (489221), Andersen, Julie M., Rosing-Asvid, Aqqalu, Lars Boehme, Mike O. Hammill (292270), Andersen Julie M.   +32 more
core   +2 more sources

Energy transfer and female condition in nursing harp seals Phoca groenlandica

Ecography, 1984
Lactating female harp seals, most with their pups, were collected on the “whelping” ice in the Gulf of St. Lawrence in 1976 and from 1978 to 1980. During lactation females lost weight at an average rate of 3.17±0.52 (SE b ) kg d −1 , for a total energy ...
R. E. A. Stewart, D. M. Lavigne
openaire   +1 more source

Oligaphorura groenlandica

, 2017
Oligaphorura groenlandica (Tullberg, 1876) * Lipura groenlandica Tullberg, 1876: 41. Oligaphorura groenlandica – Weiner 1996: 175. DISTRIBUTION. — Hautes-Pyrénées.
Thibaud, Jean-Marc
core   +1 more source