Charting the Possible Evolution of Same-Sex Liaisons

Same - sexuality sexual behaviorhas acquire multiple time in various animals , including mammals , birds , Pisces , and even insects . Researchers are increasingly happen that the understanding such behaviors develop are as wide-ranging as the animals themselves .

The always excellentNew Scientisthas an article synthesizing much of the enquiry into same - sex sexual behavior in animal and the potential evolutionary explanation . They address with University of California evolutionary biologists Marlene Zuk and Nathan Bailey , who recently published a paper examine same - sex behavior in various species . Zuk and Bailey mark that same - sexuality intimate behaviour in other animal ca n’t necessarily be equate with sexual orientation in man , researchers have follow up with similar questions as to why certain animals have develop to include members who expend energy on same - sex liaisons .

Evolutionary biologists have come up with various hypotheses for why same - sex deportment has develop in various animals . In some cases , same - sex behaviour has go forth as a result of specific adaptation , such as to foster social soldering , or because sure factor for same - sex attraction hold another survival welfare when only one written matter is present . In some cases , though , the behavior is ensuant , such as in sure fish that can not easy tell male and female members apart .

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Below , New Scientist charts several of the potential evolutionary explanation for same - sex intimate behavior in various specie :

Bailey believes that explore the evolution of intimate demeanor will give us a better understanding of evolution , include the maturation of our own species :

“ give its perseverance in species in many different animal groups , include humans , viewing it as an evolutionary force in its own right promises to provide a much richer understanding of the phylogenesis of reproductive behaviour , ” Bailey tell . He suggests we could make some fascinating comparisons . Might manly - male sexual congress in species as diverse as flour mallet and dolphins have interchangeable , even predictable , evolutionary consequences ? More daringly , could understanding the evolutionary consequences of same - sexual urge interaction in beast help us understand our own evolution ?

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