Results 31 to 40 of about 7,750 (197)

Analysis of complete mitochondrial genome sequences increases phylogenetic resolution of bears (Ursidae), a mammalian family that experienced rapid speciation

open access: yesBMC Evolutionary Biology, 2007
Background Despite the small number of ursid species, bear phylogeny has long been a focus of study due to their conservation value, as all bear genera have been classified as endangered at either the species or subspecies level.
Ryder Oliver A   +3 more
doaj   +1 more source

Ursodeoxycholic acid in the Ursidae: biliary bile acids of bears, pandas, and related carnivores.

open access: yesJournal of Lipid Research, 1993
The biliary bile acid composition of gallbladder bile obtained from six species of bears (Ursidae), the Giant panda, the Red panda, and 11 related carnivores were determined by reversed phase liquid chromatography and gas chromatography-mass spectrometry.
LR Hagey   +5 more
doaj   +1 more source

Duplication, Loss, and Evolutionary Features of Specific UDP-Glucuronosyltransferase Genes in Carnivora (Mammalia, Laurasiatheria)

open access: yesAnimals, 2022
UDP-glucuronosyltransferases (UGTs) are one of the most important enzymes for xenobiotic metabolism or detoxification. Through duplication and loss of genes, mammals evolved the species-specific variety of UGT isoforms. Among mammals, Carnivora is one of
Mitsuki Kondo   +4 more
doaj   +1 more source

Viviendo en los Andes: registros notables de la distribución altitudinal del oso andino, Tremarctos ornatus (Ursidae) en Boyacá, Colombia

open access: yesArxius de Miscel-lània Zoològica, 2020
Vivint als Andes: registres notables de la distribució altitudinal de l’os andí Tremarctos ornatus (Ursidae) a Boyacá, Colòmbia Malgrat la importància d’aquesta espècie, l’os andí encara presenta importants buits d’informació pel que fa a distribució.
C. H. Cáceres–Martínez   +4 more
doaj   +1 more source

Development of short‐target primers for species identification in biological studies of Carnivora

open access: yesEcology and Evolution, 2023
Noninvasive genetic sampling greatly facilitates studies on the genetics, ecology, and conservation of threatened species. Species identification is often a prerequisite for noninvasive sampling‐based biological studies.
Huiwen Liu   +6 more
doaj   +1 more source

Huéspedes definitivos de Spirometra mansonoides (Cestoda, Diphyllobothriidae) en el Perú

open access: yesRevista Peruana de Biología, 2013
Se realizó un estudio parasitológico en el zoológico Parque de Las Leyendas, Lima, Perú en el año de 1993. Se recolectaron 49 muestras de heces de carnívoros pertenecientes a cinco familias: Canidae, Ursidae, Procyonidae, Mustelidae y Felidae, éstas ...
Manuel Tantaleán, Carmen Michaud
doaj   +1 more source

Primer registro de oso negro americano (Ursus americanus) para el estado de Hidalgo, México

open access: yesRevista Mexicana de Biodiversidad, 2013
Se documenta el primer registro del oso negro americano (Ursus americanus) para el estado de Hidalgo, México, mismo que representa el punto más sureño de la distribución de esta especie. El ejemplar se encontró muerto cerca del poblado El Aguaje de Cerro
Luis Antonio Juárez Casillas   +1 more
doaj   +1 more source

Evaluation of black bear (Ursus americanus) diet and consequences in its conservation in Sierra de Picachos, Nuevo León, Mexico

open access: yesRevista Mexicana de Biodiversidad, 2013
Black bears (Ursus americanus) are considered endangered in Mexico. In northern Mexico, bears are considered responsible for preying on livestock, damaging private property, and crops; therefore they are killed to protect locals’ livelihoods. There is a
Luis Antonio Juárez Casillas   +1 more
doaj   +1 more source

Geographic distributions shape the functional traits in a large mammalian family

open access: yesEcology and Evolution, 2021
Traits of organisms are shaped by their living environments and also determined in part by their phylogenetic relationships. For example, phylogenetic relationships often affect the geographic distributions of animals and cause variation in their living ...
Yingjie Ma   +3 more
doaj   +1 more source

Understanding Species–Habitat Associations: A Case Study with the World’s Bears

open access: yesLand, 2022
Habitat modeling is one of the most common practices in ecology today, aimed at understanding complex associations between species and an array of environmental, bioclimatic, and anthropogenic factors.
David Lance Garshelis
doaj   +1 more source

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