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首页> 外文期刊>Conservation Biology >Spontaneous pattern formation and genetic diversity in habitats with irregular geographical features
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Spontaneous pattern formation and genetic diversity in habitats with irregular geographical features

机译：具有不规则地理特征的栖息地的自发模式形成和遗传多样性

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The role of spontaneous pattern formation, the appearance of inhomogeneities that are not directly imposed by external forces, has not been closely examined in the context of the origin and maintenance of genetic diversity in wild populations. Using individual-based computer simulations, we demonstrated that such patterns form in spatially distributed species with local demes under disruptive selection. In our model systems, spatial patterns of genetic diversity arose and changed over time even in the context of a spatially homogenous environment. The spatial distribution and dynamics of the fittest genotypes were controlled by the movement of boundaries between domains of the different genotypes. The rate of diversity decay was dramatically slower than predicted by traditional models. Therefore, spontaneous pattern formation may lead to the maintenance of genetic diversity of a species in a contiguous habitat, despite reproductive mixing. Moreover, the diversity persisted significantly longer in larger habitats and habitats with irregular geographical features. Habitat structure was intimately linked to the preservation of genetic diversity. Spontaneous pattern formation should be considered along with other spatial effects in the design of conservation areas. [References: 38]
机译：自发模式形成的作用，不由外力直接施加的不均匀性的出现，尚未在野生种群中遗传多样性的起源和维持的背景下进行仔细研究。使用基于个体的计算机模拟，我们证明了这种模式是在具有破坏性选择的局部特征的空间分布物种中形成的。在我们的模型系统中，即使在空间同质的环境中，遗传多样性的空间模式也会出现并随时间变化。优胜劣汰基因型的空间分布和动力学受不同基因型域之间边界的移动控制。多样性衰减的速度比传统模型预测的要慢得多。因此，尽管繁殖混合，自发模式形成仍可导致维持邻近生境中物种的遗传多样性。此外，在较大的生境和具有不规则地理特征的生境中，多样性的持续时间明显更长。栖息地结构与遗传多样性的保存密切相关。在保护区的设计中应考虑自然形成的图案以及其他空间效应。 [参考：38]

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