Results 81 to 90 of about 20,445 (217)

Historical shifts, geographic biases, and biological constraints shape mammal species discovery

Journal of Systematics and Evolution, EarlyView.
Taxonomic descriptions of mammals have become more robust from 1990 to 2025, with increased specimen sampling, broader comparisons, and more integrative methods. However, disparities remain: tropical and small‐bodied species are less comprehensively described, reflecting ongoing geographic and biological biases.
Matheus de T. Moroti, Jhonny J. M. Guedes, Guilherme M. Missio, Giovana L. Diegues, Alexandra M. R. Bezerra, Mario R. Moura   +5 more
wiley   +1 more source

Beyond mammals: the evolution of chewing and other forms of oropharyngeal food processing in vertebrates

Biological Reviews, Volume 101, Issue 3, Page 1406-1462, June 2026.
ABSTRACT Oropharyngeal food processing exhibits a remarkable diversity among vertebrates, reflecting the evolution of specialised ‘processing centres’ associated with the mandibular, hyoid, and branchial arches. Although studies have detailed various food‐processing strategies and mechanisms across vertebrates, a coherent and comprehensive terminology ...
Daniel Schwarz, Maja Mielke, Stephan Handschuh, Anthony Herrel, Patrick Lemell, Léa Da Cunha, Nicolai Konow   +6 more
wiley   +1 more source

Spiking Dynamics during Perceptual Grouping in the Laminar Circuits of Visual Cortex [PDF]

, 2009
Grouping of collinear boundary contours is a fundamental process during visual perception. Illusory contour completion vividly illustrates how stable perceptual boundaries interpolate between pairs of contour inducers, but do not extrapolate from a ...
Grossberg, Stephen, Léveillé, Jasmin, Versace, Massimiliano   +2 more
core   +1 more source

Comparison of musculoskeletal networks of the primate forelimb [PDF]

, 2017
Anatomical network analysis is a framework for quantitatively characterizing the topological organization of anatomical structures, thus providing a way to compare structural integration and modularity among species.
Diogo, R, Esteve-Altava, B, Molnar, J, Rolian, C   +3 more
core   +3 more sources

Scaling of internal joint distance in the elbow of small‐ to medium‐sized mammals: Implications for range of motion analyses

Journal of Anatomy, Volume 248, Issue 6, Page 950-971, June 2026.
We investigated the internal joint distances (IJDs) of the humero‐ulnar and humero‐radial joint, within a sample of 15 small‐ to medium‐sized mammals and report isometric results. We also found that joint poses had no effect on IJDs and that IJDs scale isometrically within small species.
Adrian Scheidt, Alina C. E. Renk, John A. Nyakatura   +2 more
wiley   +1 more source

Dehnel's Phenomenon in Mammals

Mammal Review, Volume 56, Issue 2, June 2026.
Some small mammals, which remain active year‐round, undergo reversible reductions in body size, braincase height, and the mass of internal organs, including the brain, from summer to winter. It is called Dehnel's phenomenon. In this review, we summarise knowledge of the mechanisms, adaptive value, and genetic basis of the phenomenon, and show how new ...
Jan R. E. Taylor, Cecilia Baldoni, Dina K. N. Dechmann   +2 more
wiley   +1 more source

Pathological and genetic aspects of spontaneous mammary gland tumor in Tupaia belangeri (tree shrew).

PLoS ONE, 2020
Mammary gland cancer is the most common cancer occurring in women globally. Incidences of this cancer in Japan are on the increase. Annually, more than 70,000 new cases are recorded in Japan and about 1.7 million in the world.
Chi Hai-Ying, Yuki Tanaka, Tatsuro Hifumi, Koichiro Shoji, Mohammad Enamul Hoque Kayesh, Md Abul Hashem, Bouchra Kitab, Takahiro Sanada, Tomoko Fujiyuki, Misako Yoneda, Hitoshi Hatai, Akira Yabuki, Noriaki Miyoshi, Chieko Kai, Michinori Kohara, Kyoko Tsukiyama-Kohara   +15 more
doaj   +1 more source

An Ecological Dipole in North American Mast‐Eating Small Mammal Dynamics

Ecology and Evolution, Volume 16, Issue 5, May 2026.
Ecological dipoles are patterns in plant and animal indices of opposite extremes, and many ecological dipoles may exist. We discovered a novel ecological dipole in seed‐eating small mammals in North America using spatial analyses. We also tested for associations between climate variables and small mammal synchrony, and found that site proximity as well
Jessica H. Barton, Ivy V. Widick, Benjamin Zuckerberg, Courtenay Strong, Marta A. Jarzyna, Jalene M. LaMontagne   +5 more
wiley   +1 more source

Studies of Birds and Mammals in the Baird and Schwatka Mountains, Alaska [PDF]

, 1974
In 1963 a joint University of Alaska-Smithsonian Institution crew worked at five locations in the Baird and Schwatka mountains in northwestern Alaska, conducting an ecological reconnaissance and faunal and floral inventory.
Chesemore, David L., Dean, Frederick C.
core  

Intra- and Interspecies Analyses of the Carcinoembryonic Antigen (CEA) Gene Family Reveal Independent Evolution in Primates and Rodents [PDF]

, 1989
Various rodent and primate DNAs exhibit a stronger intra- than interspecies cross-hybridization with probes derived from the N-terminal domain exons of human and rat carcinoembryonic antigen (CEA)-like genes.
Rudert, Fritz, Thompson, John A., Zimmermann, Wolfgang   +2 more
core   +1 more source