Results 21 to 30 of about 2,363,558 (309)

Hybridization alters the shape of the genotypic fitness landscape, increasing access to novel fitness peaks during adaptive radiation

open access: yeseLife, 2022
Estimating the complex relationship between fitness and genotype or phenotype (i.e. the adaptive landscape) is one of the central goals of evolutionary biology.
Austin H Patton   +4 more
doaj   +1 more source

The Cambrian Explosion: macroevolution and biomineralization

open access: yesAcademia Biology, 2023
Recent advances in our understanding of the Cambrian evolutionary diversification event (Cambrian Explosion) show that, although eumetazoan stem taxa were present in the late Proterozoic, a tremendous burst of macroevolutionary change occurred near the ...
Mark A. S. McMenamin
doaj   +1 more source

Niche Occupation Limits Adaptive Radiation in Experimental Microcosms [PDF]

open access: yes, 2007
Adaptive radiations have played a key role in the evolution of biological diversity. The breadth of adaptive radiation in an invading lineage is likely to be influenced by the availability of ecological niches, which will be determined to some extent by ...
Colegrave, Nick   +12 more
core   +2 more sources

Evolutionary Significance of Equinae From the Mexican Neogene

open access: yesFrontiers in Ecology and Evolution, 2019
North American Equinae integrates a monophyletic clade that consists of about 20 genera and 80 species. This group includes horses with hypsodont cheek teeth belonging to the merychippines and the tribes Hipparionini, Protohippini, and Equini.
Victor Manuel Bravo-Cuevas   +1 more
doaj   +1 more source

Compensatory adaptation and diversification subsequent to evolutionary rescue in a model adaptive radiation

open access: yesEcology and Evolution, 2021
Biological populations may survive lethal environmental stress through evolutionary rescue. The rescued populations typically suffer a reduction in growth performance and harbor very low genetic diversity compared with their parental populations.
Dong‐Hao Zhou, Quan‐Guo Zhang
doaj   +1 more source

Adaptive mesh refinement computation of acoustic radiation from an engine intake [PDF]

open access: yes, 2008
A block-structured adaptive mesh refinement (AMR) method was applied to the computational problem of acoustic radiation from an aeroengine intake. The aim is to improve the computational and storage efficiency in aeroengine noise prediction through ...
Zhang, Xin   +5 more
core   +1 more source

Deep-Time Demographic Inference Suggests Ecological Release as Driver of Neoavian Adaptive Radiation

open access: yesDiversity, 2020
Assessing the applicability of theory to major adaptive radiations in deep time represents an extremely difficult problem in evolutionary biology.
Peter Houde   +2 more
doaj   +1 more source

Convergence and plasticity in the adaptive radiation of cichlid fishes [PDF]

open access: yes, 2013
Ever since Charles Darwin and Alfred Wallace (1858) propelled our understanding about the importance of natural selection in the transformation of species, researchers endeavoured to use this intellectual foundation to explain larger patterns of ...
Muschick, Moritz
core   +1 more source

Dendrite fragmentation induced by massive-like δ–γ transformation in Fe–C alloys

open access: yesNature Communications, 2019
Transitioning from columnar to equiaxed grains is paramount for desired microstructures during steel casting. Here, the authors report a new fragmentation mechanism based on a phase transition at grain boundaries that can contribute to equiaxed grains.
Hideyuki Yasuda   +7 more
doaj   +1 more source

The Role of Photobionts as Drivers of Diversification in an Island Radiation of Lichen-Forming Fungi

open access: yesFrontiers in Microbiology, 2022
Speciation in oceanic islands has attracted the interest of scientists since the 19th century. One of the most striking evolutionary phenomena that can be studied in islands is adaptive radiation, that is, when a lineage gives rise to different species ...
Miguel Blázquez   +8 more
doaj   +1 more source

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