MinuteEarth
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Science and stories about our awesome planet!
这是 Youtop 运营的独立目录页面，并非由 MinuteEarth 或 YouTube 运营、赞助或认可。 YouTube 官方频道 ↗提交更正你是这位创作者吗？认领此页面
MinuteEarth · 发布于 2017年12月6日
When we domesticate an animal species, their brains shrink and they freak out less. LEARN MORE ************** To learn more about this topic, start your googling with these keywords: - Domesticated animal: a species of animal bred by humans over generations to become nonreactive and gain characteristics suitable for life as a farm animal or pet - Tame animal: an individual animal raised in a way that it has become less dangerous and frightened of people - Feral animal: an animal that escapes from captivity or domestication (& regains some similar & some different characteristics compared to its pre-domesticated state) - "Fight or flight": an instinctive physiological response to a threatening situation that readies a creature to either to resist forcibly or escape - Limbic system: the brain’s “panic button” - a system of nerves and networks near the bottom of the cortex that controls basic emotions (e.g. fear, pleasure, anger) and drives (e.g. hunger, sex, dominance) - Telencephalon: the most developed and anterior part of the forebrain, consisting chiefly of the cerebral hemispheres, and the brain region that shrinks most in domesticated animals - Domestication: a sustained multigenerational, mutualistic relationship in which one species (e.g. humans) assumes a significant degree of influence over the reproduction and care of another species (e.g. cows) in order to secure a more predictable supply of a resource of interest (e.g. milk/meat/traction), and through which the domesticated organisms gain advantage over individuals that remain outside this relationship (e.g. aurochs, which went extinct), thereby benefitting and often increasing the fitness of both species involved If you liked this week’s video, you might also like: Brain Scoop video on brain size and intelligence: https://www.youtube.com/watch?v=hJW8jIDfP9E Russian Fox Domestication Experiment: https://goo.gl/5nWnXz What happens to domesticated animals & their brains when they escape back to the wild?: http://www.nature.com/news/when-chickens-go-wild-1.19195#/free%5C CREDITS ********* Script Writer: Alex Reich Script Editor: Emily Elert Video Illustrator: Keenan Parry & Ever Salazar Video Director: Emily Elert Video Narrator: Emily Elert With Contributions From: Henry Reich, Kate Yoshida, Ever Salazar, Peter Reich, David Goldenberg Music by: Nathaniel Schroeder MinuteEarth is produced by Neptune Studios LLC https://neptunestudios.info SUPPORT MINUTEEARTH ************************** If you like what we do, you can help us!: - Become our patron: https://patreon.com/MinuteEarth - Our merch: https://dftba.com/minuteearth - Our book: https://minuteearth.com/books - Share this video with your friends and family - Leave us a comment (we read them!) OUR LINKS ************ Youtube | https://youtube.com/MinuteEarth TikTok | https://tiktok.com/@minuteearth Twitter | https://twitter.com/MinuteEarth Instagram | https://instagram.com/minute_earth Facebook | https://facebook.com/Minuteearth Website | https://minuteearth.com Apple Podcasts| https://podcasts.apple.com/us/podcast/minuteearth/id649211176 REFERENCES ************** Agnvall, B. et al. 2017. Is evolution of domestication driven by tameness? A selective review with focus on chickens. Applied Animal Behaviour Science. https://doi.org/10.1016/j.applanim.2017.09.006 Eberhard, W. G., & Wcislo, W. T. 2011. Grade changes in brain-body allometry: morphological and behavioural correlates of brain size in miniature spiders, insects and other invertebrates. Advances in Insect Physiology, 40, 155. http://www.stri.si.edu/sites/publications/PDFs/2011_Eberhard_Wcislo_AdvIns_Physiol.pdf Kruska, D. C. 2005. On the evolutionary significance of encephalization in some eutherian mammals: effects of adaptive radiation, domestication, and feralization. Brain, behavior and evolution, 65(2), 73-108. https://goo.gl/J86NEd Kruska, D. C. Personal Communication, Oct 2017. Marchetti, M. P., & Nevitt, G. A. 2003. Effects of hatchery rearing on brain structures of rainbow trout, Oncorhynchus mykiss. Environmental biology of Fishes, 66(1), 9-14. https://goo.gl/GL6LWG Marchetti, M. Personal Communication, Oct 2017. Wright, D. Personal Communication, Oct 2017. Zeder, M. A. 2012. Pathways to animal domestication. Biodiversity in agriculture: Domestication, evolution and sustainability, 227-259. https://goo.gl/2xWSB8 Zeder, M. A. 2015. Core questions in domestication research. Proceedings of the National Academy of Sciences, 112(11), 3191-3198. http://www.pnas.org/content/112/11/3191.full Zeder, M. A. Personal Communication, Oct 2017.
