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摘要翻译：
我们通过同域物种形成来研究驱动物种起源的成分的宏观效应。在我们的模型中，当我们调整具有不同表型的个体之间的竞争强度时，就得到了同域物种形成。作为这个控制参数的函数，我们可以通过宏观序参量的行为来表征体系从非形态状态到形态状态的相变。序参量关于控制参量的一阶导数的行为与相变一致，并在相变点处出现一个尖峰。对于不同的资源分布，过渡点发生偏移，这种效应类似于PVT系统中的压力。与性选择强度有关的参数的逆像是系统中的外场，因此也是控制参数。在我们的模型中使用的生物参数的宏观效应揭示了平衡物理系统相变中典型的热力学量的指纹。
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英文标题：
《Thermodynamic behavior of a phase transition in a model for sympatric
speciation》
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作者：
K. Luz-Burgoa, S. Moss de Oliveira, Veit Schw\"ammle and J. S. S\'a
Martins
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最新提交年份：
2006
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分类信息：
一级分类：Quantitative Biology 数量生物学
二级分类：Populations and Evolution 种群与进化
分类描述：Population dynamics, spatio-temporal and epidemiological models, dynamic speciation, co-evolution, biodiversity, foodwebs, aging; molecular evolution and phylogeny; directed evolution; origin of life
种群动力学；时空和流行病学模型；动态物种形成；协同进化；生物多样性；食物网；老龄化；分子进化和系统发育；定向进化；生命起源
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一级分类：Quantitative Biology 数量生物学
二级分类：Other Quantitative Biology 其他定量生物学
分类描述：Work in quantitative biology that does not fit into the other q-bio classifications
不适合其他q-bio分类的定量生物学工作
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英文摘要：
We investigate the macroscopic effects of the ingredients that drive the origin of species through sympatric speciation. In our model, sympatric speciation is obtained as we tune up the strength of competition between individuals with different phenotypes. As a function of this control parameter, we can characterize, through the behavior of a macroscopic order parameter, a phase transition from a non-speciation to a speciation state of the system. The behavior of the first derivative of the order parameter with respect to the control parameter is consistent with a phase transition and exhibits a sharp peak at the transition point. For different resources distribution, the transition point is shifted, an effect similar to pressure in PVT system. The inverse of the parameter related to sexual selection strength behaves like an external field in the system and, as thus, is also a control parameter. The macroscopic effects of the biological parameters used in our model reveal thus fingerprints typical of thermodynamic quantities in a phase transition of an equilibrium physical system.
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PDF链接：
https://arxiv.org/pdf/q-bio/0603029
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