Results 61 to 70 of about 2,172 (199)

Fossil bears break free from inhibitory cascade constraints at least twice (Ursus minimus and Ursus deningeri) caused by dietary adaptations

Boreas, Volume 55, Issue 2, Page 503-516, April 2026.
Bears deviate from the inhibitory cascade model (ICM) during molar size evolution, with two significant deviations linked to changes in diet: Ursus minimus and Ursus deningeri. Many bears exhibit a ‘partial ICM’, highlighting the relationship between relative molar size, dietary adaptations and dental development across different species.
Anneke H. van Heteren, A. Stefanie Luft
wiley   +1 more source

Leukoencephalomacia due to ischemic vascular accident in a Tremarctos ornatus (Spectacled bear)

, 2023
Abstract Tremactor ornatus (Spectacled bear) are the only ursids natives of South America and are present in many Zoo collections. Neurologic diseases are not common in this species and brain injuries are linked mainly to viral diseases; however ischemic brain events are not commonly reported.
Joanna V.Z. Echenique, Manoela M. Piva, Anderson H. Gris, Fernanda F. Perosa, Paula R. Ribeiro, Emanoelly M. S. Silva, Mônica Slaviero, Igor R. dos Santos, Raquel V. Hohendorff, Caroline W.C. Gomes, Luciana Sonne   +10 more
openaire   +2 more sources

Biomechanical evolution of solid bones in large animals: a microanatomical investigation [PDF]

, 2016
International ...
Alexander, Alexandra Houssaye, Amson, Andrew H. Lee, Antoine, Bibi, Blomberg, Buffrénil, Campione, Canoville, Carrano, Carrano, Christiansen, Clementz, Cornette, Cubo, Doube, Doube, Dumont, Evin, Fish, Garland, Garland, Gheerbrant, Gilbert, Girondot, Gray, Gregory, Hayashi, Hildebrand, Hokkanen, Houssaye, Houssaye, Houssaye, Houssaye, Houssaye, Houssaye, Houssaye, John R. Hutchinson, Katja Waskow, Klein, Laurin, Meredith, Nakajima, O'Neill, Oxnard, Oxnard, Polly, Prothero, Quemeneur, R Core Team, Ramsay, Raphaël Cornette, Remes, Ren, Ren, Ripley, Ross, Ruff, Sander, Schalkwyk, Schmidt-Nielsen, Sereno, Shoji Hayashi, Steiner, Straehl, Thompson, Todd, Venables, Vizcaino, Wall, Warner, Waskow   +72 more
core   +3 more sources

Human visual identification of individual Andean bears Tremarctos ornatus

Wildlife Biology, 2014
It is often challenging to use invasive methods of individual animal identification for population estimation, demographic analyses, and other ecological and behavioral analyses focused on individual‐level processes. Recent improvements in camera traps make it possible to collect many photographic samples yet most investigators ...
Russell C. Van Horn, Becky Zug, Corrin LaCombe, Ximena Velez‐Liendo, Susanna Paisley   +4 more
openaire   +1 more source

Estimación de la masa corporal de las especies de osos fósiles y actuales (Ursidae, Tremarctinae) de América del Sur Body mass estimation of extinct and extant South American bears (Ursidae, Tremarctinae)

Revista del Museo Argentino de Ciencias Naturales, 2009
Contar con estimaciones precisas de la masa corporal de los taxones fósiles es esencial para realizar reconstrucciones paleobiológicas. Empleando relaciones demostradas entre la masa corporal y medidas anatómicas en mamíferos modernos algunos autores han
Leopoldo Héctor Soibelzon, Viviana Beatriz Tarantini   +1 more
doaj  

The Challenge of Wildlife Conservation from Its Biogeographical Distribution Perspectives, with Implications for Integrated Management in Peru

Biology and Life Sciences Forum, 2022
Biodiversity is an indispensable resource and contributes to the balance of ecosystems, being of great importance for the development of a society and its culture through good management of natural spaces.
Alexander Cotrina Sánchez, Gerson Meza Mori, Subhajit Bandopadhyay, Carlos Oviedo, Nilton B. Rojas Briceño, Manuel Oliva, Ligia García, Cristóbal Torres Guzmán   +7 more
doaj   +1 more source

Manual de identificación y registro del Oso Andino participación local para promover la conservación de la especie en el DMQ [PDF]

, 2015
The demographic growth and human development in the Metropolitan District of Quito (MDQ) has reduced and fragmented the natural areas that were populated with Andean bears.
Adrián Agea, Ramiro
core  

Registros de ocurrencia del oso andino (Tremarctos ornatus Cuvier, 1825) en sus límites de distribución nororiental y austral Occurrence of the Andean bear (Tremarctos ornatus Cuvier, 1825) in its north eastern and southern limit of distribution.

Revista del Museo Argentino de Ciencias Naturales, 2011
El conocimiento de la distribución del oso andino (Tremarctos ornatus), es fundamental para evaluar el estado de conservación de la especie y el desarrollo de medidas de conservación tales como la declaración de nuevas áreas protegidas o la ...
J. Fernando Del Moral Sachetti, Fátima I Lameda Camacaro   +1 more
doaj  

Análisis preliminar de la dinámica poblacional y amenazas del oso andino (Tremarctos ornatus) al nor-occidente del Distrito Metropolitano de Quito (DMQ)-Ecuador [PDF]

, 2012
The objectives of this research were: i) Estimate the size and the structure of an andean bear population in an area within the Metropolitan District of Quito (MDQ); ii) Record displacements and characterize the habitat used by the bears; and iii ...
Molina Proaño, Santiago
core  

Tremarctos ornatus

, 1993
Tremarctos ornatus (F. G. Cuvier, 1825). In E. Geoffroy Saint-Hilaire and F. G. Cuvier, Hist. Nat. Mammifèeres, pt. 3, 5(50) "Ours des cordiliéres du Chili," 2 pp. TYPE LOCALITY: "cordiliéres du Chili," restricted by Cabrera (1958) to "los montanas al este de Trujillo, departamento de la Libertad, Peril." DISTRIBUTION: Mountainous regions of W ...
openaire   +1 more source