Results 11 to 20 of about 195,388 (199)

Archosauromorph extinction selectivity during the Triassic–Jurassic mass extinction [PDF]

open access: yesPalaeontology, 2018
AbstractMany traits have been linked to extinction risk among modern vertebrates, including mode of life and body size. However, previous work has indicated there is little evidence that body size, or any other trait, was selective during past mass extinctions.
Bethany J. Allen   +3 more
openaire   +4 more sources

On Triassic Murchisonia-like gastropods—surviving the end-Permian extinction to become extinct in the Late Triassic [PDF]

open access: yesActa Palaeontologica Polonica, 2023
High-spired Murchisonia-like slit-band gastropods are an important component of late Paleozoic gastropod faunas. Twenty-seven genera of such gastropods have been reported from the Permian, most of which representing the caenogastropod family ...
Alexander Nützel, Baran Karapunar
doaj   +1 more source

Reduced strength and increased variability of extinction selectivity during mass extinctions

open access: yesRoyal Society Open Science, 2023
Two of the traits most often observed to correlate with extinction risk in marine animals are geographical range and body size. However, the relative effects of these two traits on extinction risk have not been investigated systematically for either background times or during mass extinctions.
Pedro M. Monarrez   +2 more
openaire   +3 more sources

Selective δ-Opioid Receptor Agonist, KNT-127, Facilitates Contextual Fear Extinction via Infralimbic Cortex and Amygdala in Mice

open access: yesFrontiers in Behavioral Neuroscience, 2022
Facilitation of fear extinction is a desirable action for the drugs to treat fear-related diseases, such as posttraumatic stress disorder (PTSD). We previously reported that a selective agonist of the δ-opioid receptor (DOP), KNT-127, facilitates ...
Ayako Kawaminami   +6 more
doaj   +1 more source

The infralimbic mineralocorticoid blockage prevents the stress-induced impairment of aversive memory extinction in rats

open access: yesTranslational Psychiatry, 2022
Individuals deal with adversity and return to a normal lifestyle when adversity ends. Nevertheless, in specific cases, traumas may be preceded by memory distortions in stress-related malaises, and memory extinction impairment is strictly associated with ...
Kairo Alan Albernaz-Mariano   +1 more
doaj   +1 more source

GluN2B and GluN2A-containing NMDAR are differentially involved in extinction memory destabilization and restabilization during reconsolidation

open access: yesScientific Reports, 2021
Extinction memory destabilized by recall is restabilized through mTOR-dependent reconsolidation in the hippocampus, but the upstream pathways controlling these processes remain unknown.
Andressa Radiske   +5 more
doaj   +1 more source

A comparison of the effects of random and selective mass extinctions on erosion of evolutionary history in communities of digital organisms. [PDF]

open access: yesPLoS ONE, 2012
The effect of mass extinctions on phylogenetic diversity and branching history of clades remains poorly understood in paleobiology. We examined the phylogenies of communities of digital organisms undergoing open-ended evolution as we subjected them to ...
Gabriel Yedid   +3 more
doaj   +1 more source

Variations of the Selective Extinction Across the Galactic Bulge - Implications for the Galactic Bar [PDF]

open access: yes, 1995
We propose a new method to investigate the coefficient of the selective extinction, based on two band photometry. This method uses red clump stars as a means to construct the reddening curve.
Stanek, K. Z., Wozniak, P. R.
core   +2 more sources

Self-extinction through optimizing selection

open access: yesJournal of Theoretical Biology, 2013
Evolutionary suicide is a process in which selection drives a viable population to extinction. So far, such selection-driven self-extinction has been demonstrated in models with frequency-dependent selection. This is not surprising, since frequency-dependent selection can disconnect individual-level and population-level interests through environmental ...
Parvinen, K., Dieckmann, U.
openaire   +4 more sources

Home - About - Disclaimer - Privacy