Results 61 to 70 of about 66,421 (353)

The effect of body size evolution and ecology on encephalization in cave bears and extant relatives

BMC Evolutionary Biology, 2017
Background The evolution of larger brain volumes relative to body size in Mammalia is the subject of an extensive amount of research. Early on palaeontologists were interested in the brain of cave bears, Ursus spelaeus, and described its morphology and ...
Kristof Veitschegger
doaj   +1 more source

In memoriam Ursus [PDF]

Canadian Medical Association Journal, 2007
As I listened to U2's Beautiful Day on my iPod while jogging on a beautiful day, I mourned the loss of my comrade in the trenches of family medicine, Ursus.[1][1] Who else relishes the freedom of singing along to an uplifting song on the commute to work?
  +6 more sources

Determining causes of genetic isolation in a large carnivore (Ursus americanus) population to direct contemporary conservation measures

PLoS ONE, 2017
The processes leading to genetic isolation influence a population’s local extinction risk, and should thus be identified before conservation actions are implemented. Natural or human-induced circumstances can result in historical or contemporary barriers
A. Pelletier, M. Obbard, M. Harnden, S. McConnell, E. Howe, F. G. Burrows, B. White, C. Kyle   +7 more
semanticscholar   +1 more source

Bioclimatic, demographic and anthropogenic correlates of grizzly bear activity patterns in the Greater Yellowstone Ecosystem

Oikos, EarlyView.
Plasticity of diel activity rhythms may be a key element for adaptations of wildlife populations to changing environmental conditions. In the last decades, grizzly bears Ursus arctos in the Greater Yellowstone Ecosystem (GYE) have experienced notable environmental fluctuations, including changes in availability of food sources and severe droughts ...
Aurora Donatelli, Mark A. Haroldson, Justin G. Clapp, Paolo Ciucci, Frank T. van Manen   +4 more
wiley   +1 more source

Forros, Revista Mexicana de Ciencias Geológicas, vol. 40, núm. 2, agosto 2023

Revista Mexicana de Ciencias Geológicas, 2023
Imagen de la portada: Comparación del extremo distal del húmero de dos osos: un Agriotherium fósil y un Ursus Maritimus reciente. A la izquierda, Agriotherium (MPGJ 5676) de la cuenca de Juchipila, Zacatecas, México, edad Henfiliano temprano-tardío ...
Revista Mexicana de Ciencias geológicas
doaj  

An Evolutionarily Young Polar Bear (Ursus maritimus) Endogenous Retrovirus Identified from Next Generation Sequence Data

Viruses, 2015
Transcriptome analysis of polar bear (Ursus maritimus) tissues identified sequences with similarity to Porcine Endogenous Retroviruses (PERV). Based on these sequences, four proviral copies and 15 solo long terminal repeats (LTRs) of a newly described ...
Kyriakos Tsangaras, Jens Mayer, David E. Alquezar-Planas, Alex D. Greenwood   +3 more
doaj   +1 more source

Population of Asiatic Black Bear (Ursus thibetanus) in Kaghan and Siran Valleys, District Mansehra, Pakistan [PDF]

, 2022
Zaib Ullah, Sajid Mahmood, Zafar Iqbal, Fakhar-i- Abbas, Naveed Akhtar, Abdul Majid Khan   +5 more
openalex   +1 more source

Computational Evaluation of Statin Analogs Targeting HMG‐CoA Reductase for Coronary Artery Disease Treatment

ChemistryOpen, EarlyView.
Molecular dynamics analysis of novel statin analogs shows that binding induces superior stabilization of HMG‐CoA reductase. As shown by the solvent‐accessible surface area profile, ligand‐induced rigidity offers a new, effective strategy for drug design. Cardiovascular diseases remain a leading cause of global mortality.
Yoshua B. Mtulo, Geradius Deogratias, James E. Mgaya, Andrew S. Paluch, Lucas Paul   +4 more
wiley   +1 more source

Yacimientos del Pleistoceno superior en la Península Ibérica con presencia de restos de oso [PDF]

Munibe Antropologia-Arkeologia, 2009
En este trabajo, presentamos los resultados obtenidos tras realizar una revisión bibliográfica de publicaciones arqueozoológicas de conjuntos recuperados en cuevas de la Península Ibérica.
Villaluenga, Aritza
doaj  

Evolutionary and ecological traps for brown bears Ursus arctos in human‐modified landscapes

, 2018
The suggestions of two anonymous referees and Nancy Jennings greatly improved the first draft of the manuscript. VP was financially supported by the Excellence Project CGL2017- 82782-P financed by the Spanish Ministry of Economy, Industry and ...
V. Penteriani, M. Delgado, M. Krofel, K. Jerina, A. Ordiz, F. Dalerum, A. Zarzo‐Arias, Giulia Bombieri   +7 more
semanticscholar   +1 more source