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Roughly 270 million years ago
slideshare.net
- They found a major shift in synapsid jaw function roughly 270 million years ago linked to a significant shift in predatory behavior that has important implications for the evolution of our earliest ancestors.
phys.org/news/2024-02-killer-instinct-drove-evolution-mammals.html
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Aug 21, 2017 · The development of the predatory instinct involved a transition from the struggle of collectively organized tribal groups mainly against the natural environment, to a struggle of separate individuals mainly against the competing human environment.
- Vincent Barnett
- vincentbarnett@postmaster.co.uk
- 2018
And although James had also proposed the existence of an acquisition instinct (James 1891, 422), Veblen’s predatory instinct was not just a version of this simple instinct either, as it was linked to the emergence of a leisure class and the evolutionary stages of Homo cognitive development.
- Vincent Barnett
- 2018
Today, various animals are said to possess a survival instinct, migratory instinct, herding instinct, maternal instinct, or language instinct. But a closer look reveals that these and other “instincts” are not satisfactorily described as inborn, pre-programmed, hardwired, or genetically determined.
- Mark S. Blumberg
- 10.1002/wcs.1371
- 2017
- 2017/01
Feb 23, 2024 · The forerunners of mammals ruled the Earth for about 60 million years, long before the origin of the first dinosaurs. They diversified as the top predators on land between 315–251 million years...
- Science X
- Why Are These Questions Timely?
- Why Should Neurobiologists Care About These Questions?
- Why Should Evolutionary Biologists Care About These Questions?
- What Questions (and Challenges) Are There in The Long-Term?
Technical and intellectual reasons. We’re getting very good at observing and quantifying behavior. Cameras and computers do much of the job, revealing behaviors that previously escaped detection by the human eye or which would be too laborious to measure manually . With large-scale population surveys and comparative genomics, we’re also more attune...
Despite impressive advances, we’re still a long way from understanding the genetic and neural basis of even simple behaviors. Seymour Benzer’s seminal work in the 1960s with D. melanogaster showed how forward genetics can identify key components of specific behaviors, such as courtship or circadian activity . Despite the doors this work opened, the...
Although behavioral traits are critical to animals’ survival and reproduction, the challenge of high-throughput and robust quantification of these often-complex phenotypes has hampered exploration of their evolution, especially by comparison with studies of, for example, morphological characteristics . This is changing: the current intersection of ...
Most initial traction on the problem of behavioral evolution is likely to come from studies of simple innate actions that can be reproduced in the laboratory. However, once efficient assays are established, we can begin to tackle behaviors that are shaped by internal state and experience, in essence trying to understand the evolutionary plasticity ...
- J. Roman Arguello, Richard Benton
- 2017
Feb 26, 2024 · Before dinosaurs, ancestors of mammals were the top predators. Research suggests these first large land carnivores evolved new tools to hone their skills as hunters. The battle between predator...
Apr 7, 2017 · Evolutionary changes in epigenetic mechanisms may sculpt a learned behavior into an instinct by decreasing its dependence on external stimuli in favor of an internally regulated program of neural development (see the figure).
