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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Isotopic evidence for omnivory among European cave bears: Late Pleistocene Ursus spelaeus from the Pestera cu Oase, Romania
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Isotopic evidence for omnivory among European cave bears: Late Pleistocene Ursus spelaeus from the Pestera cu Oase, Romania

机译：欧洲洞熊中杂食动物的同位素证据：来自罗马尼亚Pestera cu Oase的晚更新世Ursus spelaeus

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摘要

Previous bone collagen carbon and nitrogen isotopic studies of Late Pleistocene European cave bears (Ursus spelaeus) have shown that these bears frequently had low nitrogen isotope values, similar to those of herbivores and indicating either unusual physiology related to hibernation or a herbivorous diet. Isotopic analysis of animal bone from the Pestera cu Oase (Cave with Bones), Romania, shows that most of its cave bears had higher nitrogen isotope values than the associated herbivores and were, therefore, omnivorous. The Oase bears are securely identified as cave bears by both their morphology and DNA sequences. Although many cave bear populations may have behaved like herbivores, the Oase isotopic data demonstrate that cave bears were capable of altering their diets to become omnivores or even carnivores. These data therefore broaden the dietary profile of U. spelaeus and raise questions about the nature of the carnivore guild in Pleistocene Europe.
机译：欧洲更新世晚期洞熊（Ursus spelaeus）的先前骨胶原碳和氮同位素研究表明，这些熊的氮同位素值通常很低，类似于草食动物，表明与冬眠或草食有关的异常生理。来自罗马尼亚的Pestera cu Oase（有骨头的洞穴）的动物骨头的同位素分析表明，其大部分洞穴熊的氮同位素值均高于相关的草食动物，因此是杂食性的。绿洲熊的形态和DNA序列均被可靠地识别为洞熊。尽管许多穴居熊的行为可能像草食动物一样，但是Oase同位素数据表明，穴居熊能够改变其饮食，成为杂食动物甚至食肉动物。因此，这些数据拓宽了美人鱼的饮食结构，并引发了有关欧洲更新世食肉动物行会性质的质疑。

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