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===Extinction=== | ===Extinction=== | ||
There is disagreement whether sexual selection alone can cause extinction | There is disagreement whether sexual selection alone can cause extinction. It likely increases the chances of extinction when combined with environmental factors like sudden ecological changes.<ref>https://biology.stackexchange.com/questions/239/is-there-any-evidence-that-sexual-selection-may-lead-to-extinction-of-species</ref><ref>The evolution of sexual strategy in modern humans: an interdisciplinary approach by Collins, Kendra Marie, https://studyres.com/doc/2550939/--california-state-university</ref><ref>Moen et al., 1999</ref> | ||
Base sexual preference is thought to be able to potentially increase, but also decrease population viability, i.e. make the species more likely to go extinct.<ref>https://besjournals.onlinelibrary.wiley.com/doi/full/10.1111/1365-2656.12601</ref><ref>https://www.sciencedaily.com/releases/2018/04/180411131646.htm</ref><ref>https://www.nature.com/articles/d41586-018-04059-7</ref> | Base sexual preference is thought to be able to potentially increase, but also decrease population viability, i.e. make the species more likely to go extinct.<ref>https://besjournals.onlinelibrary.wiley.com/doi/full/10.1111/1365-2656.12601</ref><ref>https://www.sciencedaily.com/releases/2018/04/180411131646.htm</ref><ref>https://www.nature.com/articles/d41586-018-04059-7</ref> | ||
However, there has been little support of highly sexually dimorphic mammals being more endangered.<ref>https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1691875/ | However, there has been little support of highly sexually dimorphic mammals being more endangered.<ref>https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1691875/</ref> | ||
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 support this increased size.<ref>http://www.jstor.org/stable/2410506</ref> | 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 support this increased size.<ref>http://www.jstor.org/stable/2410506</ref> | ||
Theoretic models suggest extinction cannot happen due to sexual selection without sudden environmental changes and as long the ornamented individual bears the cost.<ref>"Sexy to die for? Sexual selection and risk of extinction" by Hanna Kokko and Robert Brooks, Ann. Zool. Fennici 40: 207-219. [[https://www.jstor.org/stable/23736526 Abstract]]</ref> | Theoretic models suggest extinction cannot happen due to sexual selection without sudden environmental changes and as long the ornamented individual bears the cost.<ref>"Sexy to die for? Sexual selection and risk of extinction" by Hanna Kokko and Robert Brooks, Ann. Zool. Fennici 40: 207-219. [[https://www.jstor.org/stable/23736526 Abstract]]</ref> | ||