Effects of late quaternary climate change on Palearctic shrews
Effects of late quaternary climate change on Palearctic shrews
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晚第四纪气候变化对古北鼩鼱的影响
DOI：
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发表时间：
2013
影响因子：
11.6
通讯作者：
R. Sommer
中科院分区：
文献类型：
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作者：
S. Prost;Johannes Klietmann;T. Kolfschoten;R. Guralnick;Eric Waltari;K. Vrieling;M. Stiller;Doris Nagel;G. Rabeder;M. Hofreiter;R. Sommer
晚第四纪是一个气候剧烈振荡和环境剧烈变化的时期。一般来说，物种可以通过行为适应，分布变化，生态表型修改（非遗传），进化（遗传）或最终面临局部灭绝来应对这些变化。这些反应在过去是如何表现出来的，对于正确预测未来的反应至关重要，特别是因为目前的温暖阶段因大气二氧化碳水平上升而进一步加剧。在这里，我们使用古老的DNA（aDNA）和形态特征结合生态位建模（ENM），以调查遗传和非遗传的反应，中欧古北界的鼩？过去的气候变化。我们发现，一种巨大的形式的鼩，以前被描述为一种灭绝的更新世Sorex物种，代表了一种大型的普通鼩（Sorex araneus），它被来自不同基因库的种群所取代，并在更新世全新世过渡后具有不同的形态。我们还报告了冷适应苔原鼩（S。tundrensis）在中欧。该物种目前仅限于西伯利亚，并且迄今为止还不知道是欧洲更新世动物群的一个组成部分。最后，我们发现，有没有明确的气候振荡之间的相关性在过去的50 000年和身体大小的鼩，并得出结论，一个特殊的非类似的情况下，生物多样性和食物供应在晚冰期可能导致观察到的大身体大小。
The Late Quaternary was a time of rapid climatic oscillations and drastic environmental changes. In general, species can respond to such changes by behavioral accommodation, distributional shifts, ecophenotypic modifications (nongenetic), evolution (genetic) or ultimately face local extinction. How those responses manifested in the past is essential for properly predicting future ones especially as the current warm phase is further intensified by rising levels of atmospheric carbon dioxide. Here, we use ancient DNA (aDNA) and morphological features in combination with ecological niche modeling (ENM) to investigate genetic and nongenetic responses of Central European Palearctic shrews to past climatic change. We show that a giant form of shrew, previously described as an extinct Pleistocene Sorex species, represents a large ecomorph of the common shrew (Sorex araneus), which was replaced by populations from a different gene‐pool and with different morphology after the Pleistocene Holocene transition. We also report the presence of the cold‐adapted tundra shrew (S. tundrensis) in Central Europe. This species is currently restricted to Siberia and was hitherto unknown as an element of the Pleistocene fauna of Europe. Finally, we show that there is no clear correlation between climatic oscillations within the last 50 000 years and body size in shrews and conclude that a special nonanalogous situation with regard to biodiversity and food supply in the Late Glacial may have caused the observed large body size.