Results 81 to 90 of about 2,395 (203)

Genética de poblaciones amazónicas: la historia evolutiva del jaguar, ocelote, delfín rosado, mono lanudo y piurí, reconstruida a partir de sus genes [PDF]

, 2007
The Amazon has more than the half of the world's biodiversity. Nevertheless, the major fraction of the Amazon species has unknown evolutionary histories. This is also certain for mammals and birds.
Corrales, C., Murillo, A., Romero-Aleán, N., Ruiz-García, M., Álvarez-Prada, D.   +4 more
core   +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

Morphological disparity of mammalian limb bones throughout the Cenozoic: the role of biotic and abiotic factors

Palaeontology, Volume 67, Issue 4, July/August 2024.
Abstract Mammals exhibit ecology‐related diversity in long bone morphology, revealing an ample spectrum of adaptations both within and between clades. Their occupation of unique ecological niches in postcranial morphology is thought to have occurred at different chronological phases in relation to abiotic factors such as climate and biotic interactions
Carmela Serio, Richard P. Brown, Marcus Clauss, Carlo Meloro   +3 more
wiley   +1 more source

Depredación de Nasuella olivacea (Carnivora: Procyonidae) por Tremarctos ornatus (Carnivora: Ursidae) y Canis lupus familiaris (Carnivora: Canidae), en Parque Chingaza, Colombia

Mammalogy Notes
El Cusumbo de montaña (Nasuella olivacea) es una especie de gran importancia para los ecosistemas andinos, debido a que dispersa semillas y ayuda a controlar poblaciones de invertebrados y pequeños vertebrados. De igual forma, N.
Fredy Yhamit García Pulido, Pedro Arturo Camargo Martínez, Oscar G. Raigozo Hortúa, Juan Camilo Bonilla González   +3 more
doaj   +1 more source

Nuevas evidencias de la presencia del Oso Andino (Tremarctos ornatus) en las Yungas de Puno, el registro más austral de Perú

Revista Peruana de Biología, 2011
El oso de anteojos Tremarctos ornatus es el único representante de la familia Ursidae en Suramérica. La población más grande y de distribución continua del oso andino en el Perú, se localiza en la ladera oriental de la cordillera oriental, incluyendo al ...
Gisella Márquez, Víctor Pacheco
doaj   +1 more source

Ghostbusting—Reducing bias due to identification errors in spatial capture‐recapture histories

Methods in Ecology and Evolution, Volume 15, Issue 6, Page 1060-1070, June 2024.
Abstract Identifying individuals is key to estimating population sizes by spatial capture–recapture, but identification errors are sometimes made. The most common identification error is the failure to recognise a previously detected individual, thus creating a ‘ghost’ Johansson. This results in positively biased abundance estimates.
Abinand Reddy Kodi, Jasmin Howard, David Louis Borchers, Hannah Worthington, Justine Shanti Alexander, Purevjav Lkhagvajav, Gantulga Bayandonoi, Munkhtogtokh Ochirjav, Sergelen Erdenebaatar, Choidogjamts Byambasuren, Nyamzav Battulga, Örjan Johansson, Koustubh Sharma   +12 more
wiley   +1 more source

Habitat differences in seed‐dispersing vertebrates indicate dispersal limitation in tropical bracken‐dominated deforested areas

Biotropica, Volume 56, Issue 3, May 2024.
Forest regeneration in tropical bracken‐dominated deforested areas is mainly hindered by dispersal limitation. We found differences in species composition of seed‐dispersing birds and bats between the forest and bracken‐dominated areas, which could be one of the main causes of dispersal limitation in forest regeneration in tropical bracken‐dominated ...
Silvia C. Gallegos, Cesar Mayta, Mariana Villegas, Guido M. Ayala, Kazuya Naoki, Josef Rechberger, Valeria Rojas, María E. Viscarra, Nuria Bernal‐Hoverud, Mauricio Espejo, Isabell Hensen   +10 more
wiley   +1 more source

Análisis genético molecular del Oso Andino ( Tremarctos ornatus ) en el norte de los andes (Venezuela, Colombia, Ecuador): Una visión global

Acta Biológica Colombiana, 2001
Se analizaron 82 muestras de oso andino (Tremarctos ornatus) procedentes de 3 países latinoamericanos, Venezuela, Colombia y Ecuador, mediante 5 microsatélites hipervariables (G1A, G1D, G10B, G10C y G10X).
M. Ruiz-García
doaj  

Was the giant short-faced bear a hyper-scavenger? A new approach to the dietary study of ursids using dental microwear textures.

PLoS ONE, 2013
Dramatic environmental changes associated with global cooling since the late Miocene, and the onset of glacial-interglacial cycles in the Pleistocene served as a backdrop to the evolutionary radiation of modern bears (family Ursidae). These environmental
Shelly L Donohue, Larisa R G DeSantis, Blaine W Schubert, Peter S Ungar   +3 more
doaj   +1 more source

Running, jumping, hunting, and scavenging: Functional analysis of vertebral mobility and backbone properties in carnivorans

Journal of Anatomy, Volume 244, Issue 2, Page 205-231, February 2024.
Intervertebral mobility and backbone properties were studied in 34 species of terrestrial carnivorans. Carnivorans that seize prey with their jaws (canids and hyaenids) are characterized by a significantly elongated neck and increased vertebral mobility in the sagittal and horizontal planes.
Ruslan I. Belyaev, Polina Nikolskaia, Andrey V. Bushuev, Aleksandra A. Panyutina, Darya A. Kozhanova, Natalya E. Prilepskaya   +5 more
wiley   +1 more source