Results 171 to 180 of about 21,430 (211)

Identifying polymorphic microsatellite loci for Andean bear research

Ursus, 2009
Abstract The Andean (spectacled) bear (Tremarctos ornatus) is the only extant species of bear in South America. This species is considered Vulnerable by the International Union for Conservation of Nature (IUCN), although current population sizes are unclear.
María Paulina Viteri, Lisette P. Waits
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Are There Andean Bears in Panamá

Ursus, 2008
Abstract We present the results of a 2007 survey for Andean bears (Tremarctos ornatus) at Serrania de Pirre, Panama. We surveyed game trails using methodology developed by the Andean Bear Program of the Wildlife Conservation Society. We searched a total of 14 km along 3 trails and found 4 trees with claw marks resembling Andean bear activity signs.
Isaac Goldstein, Victor Guerrero, Ricardo Moreno   +2 more
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Andean bear–livestock conflicts: a review

Ursus, 2006
Abstract We review the state of knowledge regarding conflicts between the Andean bear (Tremarctos ornatus) and livestock. Information was gathered from the current known geographic range of the species (Venezuela, Colombia, Ecuador, Peru, and Bolivia).
Isaac Goldstein, Susanna Paisley, Robert Wallace, Jeffrey P. Jorgenson, Francisco Cuesta, Armando Castellanos   +5 more
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An open-access occurrence database for Andean bears in Peru

Ursus, 2020
The Andean bear (Tremarctos ornatus) is listed as a vulnerable species by the International Union for Conservation of Nature; however, the lack of knowledge regarding different aspects of its ecology, biogeography, and abundance hinders the conservation efforts of researchers and managers.
Nereyda Falconi, Todd K. Fuller, Stephen DeStefano, John F. Organ   +3 more
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Seasonality of Andean Bear Scat Contents in Amazonas, Northeastern Peru

Ursus, 2021
Characterizing a species' feeding habits has proved key to delimiting critical areas for species conservation. The Andean bear (Tremarctos ornatus), a species of conservation concern, inhabits the montane cloud forest and montane grasslands (jalca) of Amazonas, northeastern Peru. Knowledge of the bear's diet there is limited.
Alexandra M. Chávez, Camilo Díaz, Jessica M. Amanzo   +2 more
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Genetic evidence confirms presence of Andean bears in Argentina

Ursus, 2014
Abstract The Andean bear (Tremarctos ornatus) is found throughout the Andes Mountains from Venezuela to Bolivia. However, little is known about its distribution and range in southern areas, including Argentina. Our objective was to develop a genetic marker to identify this species by analysis of non-invasive samples (i.e., hair or feces). We designed a
Mariana Cosse, J. Fernando Del Moral Sachetti, Natalia Mannise, Miguel Acosta   +3 more
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Andean bear diet near to and far from a road

Ursus, 2020
Despite the existence of several regional studies on the diet of the Andean bear (Tremarctos ornatus), there is a lack of information about the effects of human disturbances on this species' foraging ecology. Our main goal was to compare Andean bear diet composition between a disturbed area (DA) close to a paved road versus an undisturbed area (UA) far
Lucero Hernani-Lineros, Emilia Garcia, Luis F. Pacheco   +2 more
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Diet of Andean bears in Tamá National Natural Park, Colombia

Ursus, 2020
Diet is among the most important and basic ecological aspects of a species. Information on diet composition, seasonality, and spatial variation is necessary for adequate ecological understanding and therefore conservation. Andean bears (Tremarctos ornatus) have been poorly studied across their distribution, and especially in Colombia; therefore, most ...
Cáceres Martínez, CH., Montano, L. R. S., Acevedo, Aldemar, González Maya, J. F.   +3 more
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Hematological and serum biochemical values of Andean bears in Ecuador

Ursus, 2010
Abstract We collected blood samples (n = 49) from 43 Andean Bears (Tremarctos ornatus) in Ecuador between September 1995 and May 2006 and analyzed them for 11 serum biochemical and 13 hematological parameters. Results were grouped and compared according to the bears' life condition (captive or free-ranging), sex, age, and body mass.
Armando Castellanos, Leonardo Arias, David Jackson, Roberto Castellanos   +3 more
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Phenotypic plasticity in the timing of reproduction in Andean bears

Journal of Zoology, 2018
AbstractMany factors influence whether mammals reproduce seasonally or continuously but disentangling them can be challenging in free‐living species that are hard to observe. We described the seasonality of reproduction in Andean bears (Tremarctos ornatus) in NW Peru (6°26′S, 79°33′W) to test for phenotypic plasticity in response to extrinsic cues.
R. D. Appleton, R. C. Van Horn, K. V. Noyce, T. J. Spady, R. R. Swaisgood, P. Arcese   +5 more
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