Talk:Fisherian runaway: Difference between revisions

== Altmarks final edit + Bib contribution ==

'''Fisherian runaway''' is a mechanism by which sexual selection leads to exaggerated, [[Maladaptiveness|maladaptive]] and unhealthy, physical traits (ornamentation) in some individuals of a species. Which plays a role in the evolution of [[beauty]]. In the [[manosphere]] the term is often misunderstood to refer to individuals exaggerating their appearance as lifestyle choice, but actually refers to individuals ''evolving'' more exaggerated appearance than what is optimal. However, the sexual preferences that result motivate body modifications like breast enlargement, hormone supplements and bodybuilding. Contrary to popular belief, [[sexual selection]] hasn't been explicitly proven to be the sole cause of extinctions. Only rapid environmental change such as the end of the Ice Age, by not affording enough nutrients to provide for the species formerly advantageous but now [[Maladaptiveness|maladaptive]] physical traits.  

The base sexual preference of an entire species can make them more likely to go extinct, which is a popular meme in the manosphere used to argue women's mate choices may be maladaptive.<ref>https://besjournals.onlinelibrary.wiley.com/doi/full/10.1111/1365-2656.12601</ref><ref>https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1691875/</ref><ref>https://www.sciencedaily.com/releases/2018/04/180411131646.htm</ref><ref>https://www.nature.com/articles/d41586-018-04059-7</ref> But the runaway selection of the most exaggerated members alone, cant cause the entire species to go extinct. There are scientific models that show under a stable environment, a feedback loop can develop where male intrasexual competition leads to a linear increase in size dimorphism, outstripping the ability of the environment to to support this increased size.<ref>http://www.jstor.org/stable/2410506</ref>The name Fisherian runaway derives from the originator of the concept, Ronald Fisher, the 20th century British statistician, geneticist, eugenicist and racialist.