By Aldo Poiani
Homosexuality is an evolutionary paradox in look for a answer, no longer a clinical situation in look for a treatment. gay habit is usual between social animals, and almost always expressed in the context of a bisexual sexual orientation. particular homosexuality is much less universal, yet now not distinctive to people. Poiani and Dixson invite the reader to embark on a trip in the course of the evolutionary, organic, mental and sociological features of homosexuality, looking an knowing of either the proximate and evolutionary motives of gay habit and orientation in people, different mammals and birds. The authors additionally supply a synthesis of what we all know approximately homosexuality right into a biosocial version that hyperlinks fresh advances in reproductive skew conception and numerous choice mechanisms to supply a accomplished framework that may be important for an individual instructing or making plans destiny study during this box.
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Extra info for Animal Homosexuality: A Biosocial Perspective
However, sexual segregation per se does Homosexual mounting may result from sex-specific elevated levels of sexual activity, leading to interactions between equally motivated individuals This hypothesis suggests that homosexual mating expresses the same behavioural patterns as heterosexual mating but with the involvement of same-sex partners. g. gibbons, Hylobates lar) females may disengage themselves from sexual activity during weaning of their young; this produces a simultaneous lack of sexual partners for adult males and also lack of maternal comfort for the young.
I find it difficult to improve upon this description of the integrationist programme. 1 lists 76 hypotheses that have been proposed over the years to explain the evolution and maintenance of homosexual behaviour in humans and other vertebrates at different levels of analysis (see also Chapter 2). e. the four areas of biology: proximate causation, adaptation, ontogeny and evolution) and its modification by Randolph Nesse (2000) – who also draws from Ernst Mayr (1982) – and I also add an extension to other dimen- sions such as adaptive neutrality and methodological factors.
Ever since Stephen J. Gould and Richard Lewontin published their influential article titled The spandrels of San Marco and the Panglossian paradigm: a critique of the adaptationist programme (Gould & Lewontin 1979), adaptationbashing has become a sort of light entertainment for many evolutionary biologists. I certainly take seriously Gould and Lewontin’s warning that seeing and seeking adaptations everywhere may just be the byproduct of our fecund imagination. However, Definitions I regard the practice of describing phenotypic traits as selectively neutral simply because an adaptive function is not forthcoming or, worse still, because the researcher does not even seek one for fear of being publicly ‘spandrelled’, as being equally pernicious.
Animal Homosexuality: A Biosocial Perspective by Aldo Poiani