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首页> 美国卫生研究院文献>PLoS Clinical Trials >Shifts in Species Interactions Due to the Evolution of Functional Differences between Endemics and Non-Endemics: An Endemic Syndrome Hypothesis
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Shifts in Species Interactions Due to the Evolution of Functional Differences between Endemics and Non-Endemics: An Endemic Syndrome Hypothesis

机译：由于地方病和非地方病之间功能差异的演变而导致物种相互作用的转变：地方病综合症假说

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Species ranges have been shifting since the Pleistocene, whereby fragmentation, isolation, and the subsequent reduction in gene flow have resulted in local adaptation of novel genotypes and the repeated evolution of endemic species. While there is a wide body of literature focused on understanding endemic species, very few studies empirically test whether or not the evolution of endemics results in unique function or ecological differences relative to their widespread congeners; in particular while controlling for environmental variation. Using a common garden composed of 15 Eucalyptus species within the subgenus Symphyomyrtus (9 endemic to Tasmania, 6 non-endemic), here we hypothesize and show that endemic species are functionally and ecologically different from non-endemics. Compared to non-endemics, endemic Eucalyptus species have a unique suite of functional plant traits that have extended effects on herbivores. We found that while endemics occupy many diverse habitats, they share similar functional traits potentially resulting in an endemic syndrome of traits. This study provides one of the first empirical datasets analyzing the functional differences between endemics and non-endemics in a common garden setting, and establishes a foundation for additional studies of endemic/non-endemic dynamics that will be essential for understanding global biodiversity in the midst of rapid species extinctions and range shifts as a consequence of global change.
机译：自更新世以来，物种范围一直在变化，由此片段化，分离和随后的基因流减少导致了新基因型的局部适应和地方物种的反复进化。尽管有大量文献着眼于了解特有物种，但很少有实证研究检验特有物种的进化是否会导致相对于其广泛同类的独特功能或生态差异。特别是在控制环境变化的同时。我们使用一个由共生藻属（Symphyomyrtus）属（塔斯马尼亚州特有的9种，非特有的6种）内的15个桉树种组成的公共花园，在此进行假设并显示特有种在功能和生态上与非特有种不同。与非特有种相比，特有的桉树种具有独特的功能性植物性状，对食草动物具有扩展的作用。我们发现，尽管地方病占据许多不同的栖息地，但它们具有相似的功能性状，可能导致特征性地方病综合症。这项研究提供了第一批经验数据集之一，该数据集分析了常见花园环境中地方性和非地方性之间的功能差异，并为进一步研究地方性/非地方性动力学奠定了基础，这对于了解中间的全球生物多样性至关重要全球变化导致物种的快速灭绝和范围变化。

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