Dental evidence for variation in diet over time and space in the Arctic fox, Vulpes lagopus
Dental evidence for variation in diet over time and space in the Arctic fox, Vulpes lagopus
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北极狐饮食随时间和空间变化的牙科证据
DOI：
10.1007/s00300-021-02821-8
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发表时间：
2021
期刊：
影响因子：
1.7
通讯作者：
Volkovitskiy, Alexander
中科院分区：
文献类型：
--
作者：
Ungar, Peter S.;Van Valkenburgh, Blaire;Peterson, Alexandria S.;Sokolov, Aleksandr A.;Sokolova, Natalia A.;Ehrich, Dorothee;Fufachev, Ivan A.;Gilg, Olivier;Terekhina, Alexandra;Volkovitskiy, Alexander
研究资源可用性变化的影响对了解高纬度哺乳动物的生态具有重要意义。本文研究了北极狐的牙齿证据（牙齿磨损和断裂）作为饮食和食物选择的代理。它提出了一个初步研究的牙齿微磨损，总磨损评分和牙齿断裂的样本（n= 78个人）来自俄罗斯北极亚马尔半岛。虽然这些措施都与大型食肉动物的摄食生态有关（例如，饮食中骨骼的比例），但它们尚未在任何研究中结合起来，而且很少应用于较小的物种或来自高纬度地区的物种。来自半岛北部和南部的北极狐，以及来自啮齿动物密度高峰和低谷期的北极狐，进行了比较，以评估食物供应在空间和时间上的变化的影响。结果表明，在亚马尔北部啮齿动物稀少的时期，微磨损纹理分布各异，纹理复杂性变化更大，包括更高的值（表明更多的骨消耗）。亚马尔北部的总磨损评分和牙齿断裂也明显高于南部。这些数据合在一起表明，牙齿证据可以为北极狐摄食生态的变化提供重要的见解，并可能为跨越时空的食物丰度变化的影响提供潜在的见解。
Studies of the effects of variation in resource availability are important for understanding the ecology of high-latitude mammals. This paper examines the potential of dental evidence (tooth wear and breakage) as a proxy for diet and food choice inVulpes lagopus, the Arctic fox. It presents a preliminary study of dental microwear, gross wear score, and tooth breakage in a sample (n= 78 individuals) from the Yamal Peninsula of the Russian Arctic. While these measures have each been associated with feeding ecology in larger carnivorans (e.g., proportion of bone in the diet), they have yet to be combined in any study and have rarely been applied to smaller species or those from high latitudes. Arctic foxes from the north and south of the peninsula, and those from rodent peak and trough density periods, are compared to assess impact of changes in food availability across space and time. Results indicate that microwear textures vary in dispersion, with more variation in texture complexity, including higher values (suggesting more consumption of bone), in the rodent-poor period in the north of Yamal. Gross wear scores and tooth breakage are also significantly higher for the north of Yamal than the south. These data together suggest that dental evidence can provide important insights into variation in the feeding ecology of Arctic foxes and potentially into the impacts of changes in food abundance across space and time.
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DOI：
10.1515/mamm.2010.015
发表时间：
2010-06
期刊：
--
影响因子：
--
作者：
P. Ungar;J. Scott;B. Schubert;Deano D. Stynder
通讯作者：
P. Ungar;J. Scott;B. Schubert;Deano D. Stynder
影响因子：
--
作者：
Ehrich D;Cerezo M;Rodnikova AY;Sokolova NA;Fuglei E;Shtro VG;Sokolov AA
通讯作者：
Sokolov AA
影响因子：
2.8
作者：
Krueger, Kristin L.;Scott, Jessica R.;Ungar, Peter S.
通讯作者：
Ungar, Peter S.
影响因子：
4.8
作者：
Eide, Nina E.;Stien, Audun;Fuglei, Eva
通讯作者：
Fuglei, Eva
影响因子：
4
作者：
Flower, Lucy O. H.;Schreve, Danielle C.
通讯作者：
Schreve, Danielle C.