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Sexual selection: Difference between revisions
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→Human beings are less effected by sudden environmental changes
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{{See also|{{W|Functional extinction}}}}Biologist John Endler conducted an experiment with Guppies (''Poecilia'') in a tank without predators. The female fish selected males who had strong contrast to the background as they stood out during mate selection. This then made the fish more visible to predators later reintroduced into the same tank.<ref>https://link.springer.com/chapter/10.1007/978-94-015-7682-6_7</ref><ref>[https://www.dartmouth.edu/~robertcox/Teaching_files/lecture9.ppt http://www.dartmouth.edu/~robertcox/Teaching_files/lecture9.ppt]</ref> This clearly demonstrates that sexual selection does not necessarily further and can even ''reduce'' survival chances ([[fitness]]), and is heavily dependent on the immediate environment. | {{See also|{{W|Functional extinction}}}}Biologist John Endler conducted an experiment with Guppies (''Poecilia'') in a tank without predators. The female fish selected males who had strong contrast to the background as they stood out during mate selection. This then made the fish more visible to predators later reintroduced into the same tank.<ref>https://link.springer.com/chapter/10.1007/978-94-015-7682-6_7</ref><ref>[https://www.dartmouth.edu/~robertcox/Teaching_files/lecture9.ppt http://www.dartmouth.edu/~robertcox/Teaching_files/lecture9.ppt]</ref> This clearly demonstrates that sexual selection does not necessarily further and can even ''reduce'' survival chances ([[fitness]]), and is heavily dependent on the immediate environment. | ||
Related to this, one study showed men who have lots of sex were not healthier than others by various metrics.<ref>http://rsos.royalsocietypublishing.org/content/4/1/160603</ref> | Related to this, one study showed men who have lots of sex were not healthier than others by various metrics.<ref>http://rsos.royalsocietypublishing.org/content/4/1/160603</ref> | ||
Unlike animals, which are typically very adapted to a narrow ecology, humans are highly adaptive and hence less effected by sudden environmental changes and hence less likely to face extinction due to sexual selection for superficial traits (to the extent this kind of selection is taking place at all). | |||
Technology and human [[IQ|intelligence]] has evolved to the point sudden environmental changes, such as natural disasters, global warming, weekly weather changes, etc. Don't effect us as much as every other animal, due to our ability to forecast and plan for the future. | Technology and human [[IQ|intelligence]] has evolved to the point sudden environmental changes, such as natural disasters, global warming, weekly weather changes, etc. Don't effect us as much as every other animal, due to our ability to forecast and plan for the future. | ||
== Other kinds of selection == | == Other kinds of selection == | ||
The main kind of selection is ''environmental'' selection referring to selection done by the environment or ecology e.g. due to famines, disease or natural death, and everything else that is not sexual. The Darwin award is primarily concerned with this selection. | The main kind of selection is ''environmental'' selection referring to selection done by the environment or ecology e.g. due to famines, disease or natural death, and everything else that is not sexual. The Darwin award is primarily concerned with this selection. | ||