Blar i Institutt for natur, helse og miljø på forfatter "Zedrosser, Andreas"
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Harvest is associated with the disruption of social and finescale genetic structure among matrilines of a solitary large carnivore
Frank, Shane C.; Pelletier, Fanie; Kopatz, Alexander; Bourret, Audrey; Garant, Dany; Swenson, Jon; Eiken, Hans Geir; Hagen, Snorre; Zedrosser, Andreas (Peer reviewed; Journal article, 2020)Harvest can disrupt wildlife populations by removing adults with naturally high survival. This can reshape sociospatial structure, genetic composition, fitness, and potentially affect evolution. Genetic tools can detect ... -
Heritability of head size in a hunted large carnivore, the brown bear (Ursus arctos)
Rivrud, Inger Maren; Frank, Shane C.; Bischof, Richard; Mysterud, Atle; Steyaert, Sam; Hertel, Anne Gabriela; Hagen, Snorre; Eiken, Hans Geir; Swenson, Jon; Zedrosser, Andreas (Journal article; Peer reviewed, 2019)Wild animal populations experience selection pressures from both natural and anthropogenic sources. The availability of extensive pedigrees is increasing along with our ability to quantify the heritability and evolvability ... -
High concentrations of lead (Pb) in blood and milk of free-ranging brown bears (Ursus arctos) in Scandinavia
Fuchs, Boris; Thiel, Alexandra; Zedrosser, Andreas; Brown, Ludovick; Hydeskov, Helle Bernstorf; Rodushkin, Ilia; Evans, Alina; Boesen, Amanda Høyer; Græsli, Anne Randi; Kindberg, Jonas; Arnemo, Jon Martin (Peer reviewed; Journal article, 2021)Exposure to lead (Pb) is a global health problem for both humans and wildlife. Despite a dramatic decline in human Pb exposure following restrictions of leaded gasoline and industry and thereby an overall reduction of Pb ... -
Hunting promotes sexual conflict in brown bears
Gosselin, Jacinthe; Leclerc, Martin; Zedrosser, Andreas; Steyaert, Sam; Swenson, Jon; Pelletier, Fanie (Journal article; Peer reviewed, 2017)The removal of individuals through hunting can destabilize social structure, potentially affecting population dynamics. Although previous studies have shown that hunting can indirectly reduce juvenile survival through ... -
Hunting promotes spatial reorganization and sexually selected infanticide
Leclerc, Martin; Frank, Shane C.; Zedrosser, Andreas; Swenson, Jon; Pelletier, Fanie (Journal article; Peer reviewed, 2017)Harvest can affect the ecology and evolution of wild species. The removal of key individuals, such as matriarchs or dominant males, can disrupt social structure and exacerbate the impact of hunting on population growth. ... -
Hunting regulation favors slow life histories in a large carnivore
Van de Walle, Joanie; Pigeon, Gabriel; Zedrosser, Andreas; Swenson, Jon; Pelletier, Fanie (Journal article; Peer reviewed, 2018)As an important extrinsic source of mortality, harvest should select for fast reproduction and accelerated life histories. However, if vulnerability to harvest depends upon female reproductive status, patterns of selectivity ... -
Infanticide as a male reproductive strategy has a nutritive risk effect in brown bears
Steyaert, Sam; Reusch, Christine; Brunberg, Sven; Swenson, Jon; Hackländer, Klaus; Zedrosser, Andreas (Journal article; Peer reviewed, 2013-10-02)Behavioural strategies to reduce predation risk can incur costs, which are often referred to as risk effects. A common strategy to avoid predation is spatio-temporal avoidance of predators, in which prey typically trade ... -
Insights in the regulation of trimetylamine N-oxide production using a comparative biomimetic approach suggest a metabolic switch in hibernating bears
Ebert, Thomas; Painer, Johanna; Bergman, Peter; Qureshi, Abdul Rashid; Giroud, Sylvain; Stalder, Gabrielle; Kublickiene, Karolina; Göritz, Frank; Vetter, Sebastian G.; Bieber, Claudia; Fröbert, Ole; Arnemo, Jon Martin; Zedrosser, Andreas; Redtenbacher, Irene; Shiels, Paul; Johnson, Richard J.; Stenvinkel, Peter (Peer reviewed; Journal article, 2020)Experimental studies suggest involvement of trimethylamine N-oxide (TMAO) in the aetiology of cardiometabolic diseases and chronic kidney disease (CKD), in part via metabolism of ingested food. Using a comparative biomimetic ... -
The interplay between hunting rate, hunting selectivity, and reproductive strategies shapes population dynamics of a large carnivore
Van de Walle, Joanie; Pelletier, Fanie; Zedrosser, Andreas; Swenson, Jon; Jenouvrier, Stéphanie; Bischof, Richard (Peer reviewed; Journal article, 2021)Harvest, through its intensity and regulation, often results in selection on female reproductive traits. Changes in female traits can have demographic consequences, as they are fundamental in shaping population dynamics. ... -
Landscape of fear or landscape of food? Moose hunting triggers an antipredator response in brown bears
Brown, Ludovick; Zedrosser, Andreas; Arnemo, Jon Martin; Fuchs, Boris; Kindberg, Jonas; Pelletier, Fanie (Peer reviewed; Journal article, 2023)Hunters can affect the behavior of wildlife by inducing a landscape of fear, selecting individuals with specific traits, or altering resource availability across the landscape. Most research investigating the influence of ... -
Litter loss triggers estrus in a nonsocial seasonal breeder
Steyaert, Sam; Swenson, Jon; Zedrosser, Andreas (Journal article; Peer reviewed, 2014)Sexually selected infanticide (SSI) is often presumed to be rare among seasonal breeders, because it would require a near immediate return to estrus after the loss of an entire litter during the mating season. We evaluated ... -
Metabolic reprogramming involving glycolysis in the hibernating brown bear skeletal muscle
Chazarin, Blandine; Storey, Kenneth B.; Ziemianin, Anna; Chanon, Stéphanie; Plumel, M.; Chery, Isabelle; Durand, Christine; Evans, Alina; Arnemo, Jon Martin; Zedrosser, Andreas; Swenson, Jon; Gauquelin-Koch, Guillemette; Simon, Chantal; Blanche, Stephane; Lefai, Etienne; Bertile, Fabrice (Journal article; Peer reviewed, 2019)Background In mammals, the hibernating state is characterized by biochemical adjustments, which include metabolic rate depression and a shift in the primary fuel oxidized from carbohydrates to lipids. A number of studies ... -
Movement and habitat selection of a large carnivore in response to human infrastructure differs by life stage
Thorsen, Neri Horntvedt; Hansen, Jennifer Eve; Støen, Ole-Gunnar; Kindberg, Jonas; Zedrosser, Andreas; Frank, Shane (Peer reviewed; Journal article, 2022)Background: The movement extent of mammals is influenced by human-modified areas, which can affect population demographics. Understanding how human infrastructure influences movement at different life stages is important ... -
National Parks in Northern Sweden as Refuges for Illegal Killing of Large Carnivores
Rauset, Geir Rune; Andrén, Henrik; Swenson, Jon; Samelius, Gustaf; Segerström, Peter; Zedrosser, Andreas; Persson, Jens (Journal article; Peer reviewed, 2016)Large protected areas are often considered to be as important as population size in reducing extinction risk for large carnivores. However, the effectiveness of protected areas for large carnivore survival has rarely been ... -
Phylogeography, genetic diversity, and connectivity of brown bear populations in Central Asia
Tumendemberel, Odbayar; Zedrosser, Andreas; Proctor, Michael F.; Reynolds, Harry V.; Adams, Jennifer R.; Sullivan, Jack M.; Jacobs, Sarah J.; Khorloojav, Tumennasan; Tserenbataa, Tuya; Batmunkh, Mijiddorj; Swenson, Jon; Waits, Lisette P. (Peer reviewed; Journal article, 2019)Knowledge of genetic diversity and population structure is critical for conservation and management planning at the population level within a species’ range. Many brown bear populations in Central Asia are small and ... -
Proteolysis inhibition by hibernating bear serum leads to increased protein content in human muscle cells
Chanon, Stéphanie; Chazarin, Blandine; Toubhans, Benoit; Durand, Christine; Chery, Isabelle; Robert, Maud; Vieille-Marchiset, Aurélie; Swenson, Jon; Zedrosser, Andreas; Evans, Alina; Brunberg, Sven; Arnemo, Jon Martin; Gauquelin-Koch, Guillemette; Storey, Kenneth B.; Simon, Chantal; Blanc, Stéphane; Bertile, Fabrice; Lefai, Etienne (Journal article; Peer reviewed, 2018)Muscle atrophy is one of the main characteristics of human ageing and physical inactivity, with resulting adverse health outcomes. To date, there are still no efficient therapeutic strategies for its prevention and/or ... -
Quantifying long-term stress in brown bears with the hair cortisol concentration: a biomarker that may be confounded by rapid changes in response to capture and handling
Cattet, Marc; Macbeth, Bryan J.; Janz, David M.; Zedrosser, Andreas; Swenson, Jon; Dumond, Mathieu; Stenhouse, Gordon B. (Journal article; Peer reviewed, 2014)The measurement of cortisol in hair is becoming important in studying the role of stress in the life history, health and ecology of wild mammals. The hair cortisol concentration (HCC) is generally believed to be a reliable ... -
Scent-sniffing dogs can discriminate between native Eurasian and invasive North American beavers
Rosell, Frank; Cross, Hannah; Johnsen, Christin Beate; Sundell, Janne; Zedrosser, Andreas (Peer reviewed; Journal article, 2019)The invasion of a species can cause population reduction or extinction of a similar native species due to replacement competition. There is a potential risk that the native Eurasian beaver (Castor fiber) may eventually be ... -
Seasonal and annual variation in the diet of brown bears Ursus arctos in the boreal forest of southcentral Sweden
Stenset, Nina Emilie; Lutnæs, Paul Antoni Nilsen; Bjarnadóttir, Valgerður; Dahle, Bjørn Steinar; Fossum, Kristin Høivik; Jigsved, Patrick; Johansen, Thomas; Neumann, Wiebke; Opseth, Ole; Rønning, Oddmund; Steyaert, Sam; Zedrosser, Andreas; Brunberg, Sven; Swenson, Jon (Journal article; Peer reviewed, 2016)Understanding a species' feeding ecology is essential for successful management and conservation, because food abundance can influence body mass, survival, reproductive success, movements, and habitat use. We describe ... -
Seasonal and diel movement patterns of brown bears in a population in southeastern Europe
Bogdanović, Neda; Hertel, Anne G.; Zedrosser, Andreas; Paunović, Milan; Plećaš, Milan; Ćirović, Duško (Peer reviewed; Journal article, 2021)Most animals concentrate their movement into certain hours of the day depending on drivers such as photoperiod, ambient temperature, inter- or intraspecific competition, and predation risk. The main activity periods of ...