• Adipose-derived stem cells from the brown bear (Ursus arctos) spontaneously undergo chondrogenic and osteogenic differentiation 

      Fink, Trine; Rasmussen, Jeppe G.; Emmersen, Jeppe; Fahlman, Åsa; Brunberg, Sven; Josefsson, Johan; Arnemo, Jon Martin; Zachar, Vladimir; Swenson, Jon E.; Fröbert, Ole (Journal article; Peer reviewed, 2011)
      In the den, hibernating brown bears do not develop tissue atrophy or organ damage, despite almost no physical activity. Mesenchymal stem cells could play an important role in tissue repair and regeneration in brown bears. ...
    • Bjørnens status og økologi i Skandinavia : rapport fra det Skandinaviske bjørneprosjektet til Miljøverndepartementet 

      Swenson, Jon E.; Støen, Ole Gunnar; Zedrosser, Andreas; Kindberg, Jonas; Brunberg, Sven; Arnemo, Jon Martin; Sahlén, Veronica (Det Skandinaviake bjørneprosjektet;2010-3, Research report, 2010)
    • Capture, Anesthesia, and Disturbance of Free-Ranging Brown Bears (Ursus arctos) during Hibernation 

      Evans, Alina L.; Sahlén, Veronica; Støen, Ole-Gunnar; Fahlman, Åsa; Brunberg, Sven; Madslien, Knut; Fröbert, Ole; Swenson, Jon E.; Arnemo, Jon Martin (Journal article; Peer reviewed, 2012)
      We conducted thirteen immobilizations of previously collared hibernating two- to four-year-old brown bears (Ursus arctos) weighing 21–66 kg in central Sweden in winter 2010 and 2011 for comparative physiology research. ...
    • Chewing lice Trichodectes pinguis pinguis in Scandinavian brown bears ( Ursus arctos ) 

      Esteruelas, Nuria Fandos; Malmsten, Jonas; Bröjer, Caroline; Grandi, Giulio; Lindström, Anders; Brown, Paul; Swenson, Jon E.; Evans, Alina L.; Arnemo, Jon Martin (Journal article; Peer reviewed, 2016)
      In April 2014 and 2015, we noted localized alopecia (neck, forelimbs, and chest) and hyperpigmentation on two adult brown bears (Ursus arctos) captured in central-south Sweden for ecological studies under the Scandinavian ...
    • Drivers of hibernation in the brown bear 

      Evans, Alina L.; Singh, N.J.; Friebe, A.; Arnemo, Jon Martin; Laske, T.G.; Fröbert, O.; Swenson, Jon E.; Blanc, S. (Journal article; Peer reviewed, 2016)
      Background: Hibernation has been a key area of research for several decades, essentially in small mammals in the laboratory, yet we know very little about what triggers or ends it in the wild. Do climatic factors, an ...
    • Effects of different doses of medetomidine and tiletamine-zolazepam on the duration of induction and immobilization in free- ranging yearling brown bears (Ursus arctos) 

      Painer, Johanna; Zedrosser, Andreas; Arnemo, Jon Martin; Fahlman6, Åsa; Brunberg, Sven; Segerström, Peter; Swenson, Jon E. (Journal article; Peer reviewed, 2012)
      We compared anesthetic protocols with different doses of tiletamine-zolazepam (TZ) combined with medetomidine (M) for 288 yearling brown bear (Ursus arctos) immobilizations with the objective of finding a combination of ...
    • Factors affecting date of implantation, parturition, and den entry estimated from activity and body temperature in free-ranging brown bears 

      Friebe, Andrea; Evans, Alina L.; Arnemo, Jon Martin; Blanc, Stephane; Brunberg, Sven; Fleissner, Günther; Swenson, Jon E.; Zedrosser, Andreas (Journal article; Peer reviewed, 2014)
      Knowledge of factors influencing the timing of reproduction is important for animal conservation and management. Brown bears (Ursus arctos) are able to vary the birth date of their cubs in response to their fat stores, but ...
    • Human behaviour can trigger large carnivore attacks in developed countries 

      Penteriani, Vincenzo; Delgado, Maria del Mar; Pinchera, Francesco; Naves, Javier; Fernandez-Gil, Alberto; Kojola, Ilpo; Härkönen, Sauli; Norberg, Harri; Frank, Jens; Fedriani, Jose Maria; Sahlen, Veronica; Støen, Ole Gunnar; Swenson, Jon E.; Wabakken, Petter; Pellegrini, Mario; Herrero, Stephen; Lopez-Bao, Jose Vincente (Journal article; Peer reviewed, 2016)
      The media and scientific literature are increasingly reporting an escalation of large carnivore attacks on humans in North America and Europe. Although rare compared to human fatalities by other wildlife, the media often ...
    • Low cardiac output as physiological phenomenon in hibernating, free-ranging Scandinavian brown bears ( Ursus arctos ) : an observational study 

      Jørgensen, Peter Godsk; Arnemo, Jon Martin; Swenson, Jon E.; Jensen, Jan S.; Galatius, Søren; Frøbert, Ole (Journal article; Peer reviewed, 2014)
      Background: Despite 5-7 months of physical inactivity during hibernation, brown bears (Ursus arctos) are able to cope with physiological conditions that would be detrimental to humans. During hibernation, the tissue ...
    • Physiological evidence for a human-induced landscape of fear in brown bears (Ursus arctos) 

      Støen, Ole Gunnar; Ordiz, Andres; Evans, Alina L.; Laske, Timothy G.; Kindberg, Jonas; Fröbert, Ole; Swenson, Jon E.; Arnemo, Jon Martin (Journal article; Peer reviewed, 2015)
      Human persecution is a major cause of mortality for large carnivores. Consequently, large carnivores avoid humans, but may use human-dominated landscapes by being nocturnal and elusive. Behavioral studies indicate that ...
    • Physiological reactions to capture in hibernating brown bears 

      Evans, Alina L.; Singh, Navinder J.; Fuchs, Boris; Blanc, Stephane; Friebe, Andrea; Laske, Timothy G.; Frobert, Ole; Swenson, Jon E.; Arnemo, Jon Martin (Journal article; Peer reviewed, 2016)
      Human disturbance can affect animal life history and even population dynamics. However, the consequences of these disturbances are difficult to measure. This is especially true for hibernating animals, which are highly ...
    • Platelet function in brown bear (Ursus arctos) compared to man 

      Fröbert, Ole; Christensen, Kjeld; Fahlman, Åsa; Brunberg, Sven; Josefsson, Johan; Särndahl, Eva; Swenson, Jon E.; Arnemo, Jon Martin (Journal article; Peer reviewed, 2010)
      Background: Information on hemostasis and platelet function in brown bear (Ursus arctos) is of importance for understanding the physiological, protective changes during hibernation. Objective: The study objective was to ...
    • Wolves, people, and brown bears influence the expansion of the recolonizing wolf population in Scandinavia 

      Ordiz, Andres; Milleret, Cyril; Kindberg, Jonas; Månsson, Johan; Wabakken, Petter; Swenson, Jon E.; Sand, Håkan (Journal article; Peer reviewed, 2015)
      Interspecific competition can influence the distribution and abundance of species and the structure of ecological communities and entire ecosystems. Interactions between apex predators can have cascading effects through ...