Same-Sex Mounting in Birds: Comparative Test of a Synthetic Reproductive Skew Model of Homosexuality

Q3 Agricultural and Biological Sciences
A. Poiani
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引用次数: 8

Abstract

Same-sex mounting is an evolutionary paradox in that it is not directly conducive to fertilization in spite of its obvious sexual origin. Whether same-sex mounting is an adaptive behaviour that indirectly enhances reproductive success of self or close relatives through its mediation of dominance or cooperative interactions, or whether it is just a by-product of neuroendocrinological conditions manifested during breeding periods of the year is an issue that remains to be re- solved. Here I introduce a novel model, the Synthetic Reproductive Skew Model of Homosexuality that aims at understand- ing same-sex mounting as a result of the combined effect of a set of variables and processes that affect both sexual and sociosexual aspects of behaviour. I also provide a comparative test of the model, the test is circumscribed to birds and util- ises data from 72 avian taxa. Comparative analyses suggest that same-sex mounting in birds is an evolutionary result of inter-individual interactions associated with the dynamics of reproductive skew, direct effects of sexual readiness in spe- cific social circumstances and sociosexual interactions that, in birds, seem to be more affected by dominance conflicts than by affinitive relationships.
鸟类中的同性繁殖:同性恋合成繁殖偏态模型的比较测试
同性交配是一个进化上的悖论,因为尽管它有明显的性起源,但它并不能直接促进受精。同性交配是否是一种适应性行为,通过其优势或合作互动的中介间接提高自己或近亲的繁殖成功率,或者它只是一年中繁殖期神经内分泌状况的副产品,这仍然是一个有待解决的问题。在这里,我介绍了一个新颖的模型,即同性恋的合成生殖倾斜模型,旨在理解同性的增加是一系列变量和过程的综合影响的结果,这些变量和过程影响了行为的性和社会性方面。我还提供了一个模型的比较测试,该测试仅限于鸟类,并利用了72个鸟类分类群的数据。比较分析表明,鸟类的同性交配是个体间相互作用的进化结果,这种相互作用与生殖倾斜的动态、特定社会环境下性准备的直接影响以及鸟类的社会性相互作用有关,而这种相互作用似乎更多地受到优势冲突而不是亲和关系的影响。
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来源期刊
Open Ornithology Journal
Open Ornithology Journal Agricultural and Biological Sciences-Animal Science and Zoology
自引率
0.00%
发文量
0
期刊介绍: The Open Ornithology Journal is an Open Access online journal, which publishes research articles, reviews/mini-reviews, letters and guest edited single topic issues in all important areas of ornithology including avian behaviour,genetics, phylogeography , conservation, demography, ecology, evolution, and morphology. The Open Ornithology Journal, a peer-reviewed journal, is an important and reliable source of current information on developments in the field. The emphasis will be on publishing quality papers rapidly and making them freely available to researchers worldwide.
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