Results 31 to 40 of about 111,656 (345)

Plastomic studies inform the mechanisms of edaphic adaptation in North American species in the tribe Thelypodieae (Brassicaceae)

American Journal of Botany, EarlyView.
Abstract Premise Adaptation to edaphic environments is vital for plant survival. The tribe Thelypodieae (Brassicaceae) thrives in diverse edaphic conditions, including harsh serpentine soils. A robust phylogeny is essential to understanding the edaphic evolution in this tribe but is challenging to obtain due to incomplete lineage sorting, hybridization,
Kasuni C. Daundasekara, Elyssa R. Garza, Alan E. Pepper   +2 more
wiley   +1 more source

Bending performance changes during prolonged canine eruption in saber‐toothed carnivores: A case study of Smilodon fatalis

The Anatomical Record, EarlyView.
Abstract The canine of saber‐toothed predators represents one of the most specialized dental structures known. Hypotheses about the function of hypertrophied canines range from display and conspecific interaction, soft food processing, to active prey acquisition.
Z. Jack Tseng
wiley   +1 more source

Retreat and extinction of the Late Pleistocene cave bear (Ursus spelaeus sensu lato)

SCIENCE NATURE, 2016
The cave bear (Ursus spelaeus sensu lato) is a typical representative of Pleistocene megafauna which became extinct at the end of the Last Glacial. Detailed knowledge of cave bear extinction could explain this spectacular ecological transformation.
M. Baca, D. Popović, K. Stefaniak, Adrian Marciszak, Mikołaj Urbanowski, A. Nadachowski, P. Mackiewicz   +6 more
semanticscholar   +1 more source

Comparing cranial biomechanics between Barbourofelis fricki and Smilodon fatalis: Is there a universal killing‐bite among saber‐toothed predators?

The Anatomical Record, EarlyView.
Abstract Saber‐tooths, extinct apex predators with long and blade‐like upper canines, have appeared iteratively at least five times in the evolutionary history of vertebrates. Although saber‐tooths exhibit a relatively diverse range of morphologies, it is widely accepted that all killed their prey using the same predatory behavior. In this study, we CT‐
Borja Figueirido, Shane Tucker, Stephan Lautenschlager   +2 more
wiley   +1 more source

Climate warming and changes in Cyclotella sensu lato in the Laurentian Great Lakes

, 2017
We present the first evidence of biological change in all of the pelagic Laurentian Great Lakes associated with recent climatic warming. We hypothesized that measured changes in lake temperature, and the resulting physical changes to water columns, were ...
E. Reavie, Gerald V. Sgro, Lisa R. Estepp, Andrew J. Bramburger, Victoria L. Shaw Chraïbi, R. Pillsbury, Meijun Cai, C. Stow, A. Dove   +8 more
semanticscholar   +1 more source

Growing sabers: Mandibular shape and biomechanical performance trajectories during the ontogeny of Smilodon fatalis

The Anatomical Record, EarlyView.
Abstract The evolution of organisms can be studied through the lens of developmental systems, as the timing of development of morphological features is an important aspect to consider when studying a phenotype. Such data can be challenging to obtain in fossil amniotes owing to the scarcity of their fossil record. However, the numerous remains of Rancho
Narimane Chatar, Romain Boman, Valentin Fischer, Valentina Segura, Clara Julémont, Z. Jack Tseng   +5 more
wiley   +1 more source

Perspectiva dos cuidadores acerca do vínculo com crianças e adolescentes institucionalizados

Revista Contexto & Saúde
Objetivo: Conhecer a perspectiva dos cuidadores acerca das relações de vínculo estabelecidas no cuidado de crianças e adolescentes institucionalizados.
Taniely da Costa Bório, Ruth Irmgard Bärtschi Gabatz, Viviane Marten Milbrath, Jéssica Cardoso Vaz, Nadirlene Pereira Gomes, Taís Alves Farias   +5 more
doaj   +1 more source

Do marine phytoplankton follow Bergmann's rule sensu lato?

Biological Reviews of The Cambridge Philosophical Society, 2017
Global warming has revitalized interest in the relationship between body size and temperature, proposed by Bergmann's rule 150 years ago, one of the oldest manifestations of a ‘biogeography of traits’.
U. Sommer, K. Peter, S. Genitsaris, M. Moustaka-Gouni   +3 more
semanticscholar   +1 more source

Helmeted hornbill cranial kinesis: Balancing mobility and stability in a high‐impact joint

The Anatomical Record, EarlyView.
Abstract Prokinesis—in which a craniofacial joint allows the rostrum to move relative to the braincase—is thought to confer diverse advantages in birds, mostly for feeding. A craniofacial joint would, however, be a weak link if cranial stability is important. Paradoxically, we have identified a craniofacial joint in helmeted hornbills (Rhinoplax vigil),
Mike Schindler, Benjamin Flaum, Armita Razieh Manafzadeh, Viktoriia Kamska, Kanmani Chandra Rajan, Maria Jose Robles Malagamba, Ruien Hu, Daniel Baum, Mason N. Dean   +8 more
wiley   +1 more source

Kyphosidae sensu Randall 2005

, 2013
Key to the Indo-Pacific species of Kyphosidae: 1. Fewer than IX dorsal fin spines (VI–VIII); more than 19 soft dorsal-fin rays (20–23); more than 22 soft anal-fin rays (23–26) (South Africa, southern Mozambique), anterior part of soft dorsal- and soft anal fin distinctly elongate.........................................................................
Knudsen, Steen Wilhelm, Clements, Kendall D.   +1 more
openaire   +4 more sources