Results 71 to 80 of about 8,511 (214)
Genomic Insights Into Carnivorous Fish in the Characiformes
Ecology and Evolution, Volume 16, Issue 4, April 2026.This study employed comparative genomic approaches using 12 high‐quality Characiformes genomes (covering nine subfamilies) with zebrafish as an outgroup to explore the molecular mechanisms underlying the carnivorous adaptation of Characiformes. Expanded gene families, positively selected genes, and rapidly evolving genes in carnivorous species were ...
Shihu Zhao +10 more
wiley +1 more source
Parasites in Bears (Ursidae): Sampling Gaps in the Spectacle Bear (Tremarctos ornatus)
Revista de Medicina VeterinariaParasites are part of the natural processes that help regulate populations and maintain ecosystems balanced. There is a growing recognition of parasites as important factors in the conservation of species, mainly those vulnerable to extinction in a ...
Néstor Roncancio-Duque
semanticscholar +1 more source
Acta Physiologica, Volume 242, Issue 4, April 2026.ABSTRACT Aim Unlike humans, brown bears (Ursus arctos) uniquely preserve skeletal muscle mass and function during months of hibernation despite prolonged fasting and inactivity. We investigated how mitochondrial energetics respond in skeletal muscle to support this remarkable resilience.
Audrey Bergouignan +13 more
wiley +1 more source
Zoologiceskij zurnalThe structure of the second upper molar (M2) of brown (Ursus arctos) and white (U. maritimus) bears was studied, with 9 polymorphic characters identified, and their descriptions given.
D. Gimranov
semanticscholar +1 more source
Ursidae Fischer de Waldheim 1817
, 2005 Published as part of Wilson, Don E. & Reeder, DeeAnn, 2005, Order Carnivora, pp. 532-628 in Mammal Species of the World: a Taxonomic and Geographic Reference (3 rd Edition), Volume 1, Baltimore :The Johns Hopkins University Press on page 586, DOI: 10.5281/zenodo ...
Wilson, Don E., Reeder, DeeAnn
openaire +1 more source
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
Ursidae Fischer de Waldheim 1817
, 1982 Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Carnivora, pp. 244-289 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc.
James H. Honacki +2 more
openaire +2 more sources
New perspectives on head and neck allometry and ecomorphology in tetrapods
Biological Reviews, Volume 101, Issue 2, Page 665-694, April 2026.ABSTRACT The skull and neck are vital parts of the body, influencing feeding ecology, habitat exploitation and locomotion. Numerous studies have therefore sought to understand how the size of these segments vary with ecology and scale with overall body size.
Alice E. Maher +4 more
wiley +1 more source
PaleoAnthropologyArchaeological animal bone assemblages are often highly fragmented, meaning that for over 70% of the recovered bone fragments we do not know what animal (or human) species they belonged to.
Karen Ruebens +3 more
doaj +1 more source
Biological Diversity, Volume 3, Issue 1, Page 14-32, March 2026.Integrating data from plastid genomes, nrDNA, and 353 low‐copy nuclear genes, this study establishes a robust phylogenetic framework for Hylodesmum. This framework supports a taxonomic revision recognizing 18 species and reveals a complex pattern of bidirectional EA–ENA dispersal, with mammals as a plausible dispersal agent. ABSTRACT Phylogenomics with
Zhuqiu Song +5 more
wiley +1 more source