Intra-individual variation in stable carbon (δ13C) and nitrogen (δ15N) isotopes in mandibles of modern caribou of Qamanirjuaq (Rangifer tarandus groenlandicus) and Banks Island (Rangifer tarandus pearyi): Implications for tracing seasonal and temporal changes in diet

Intra-individual variation in stable carbon (δ13C) and nitrogen (δ15N) isotopes in mandibles of modern caribou of Qamanirjuaq (Rangifer tarandus groenlandicus) and Banks Island (Rangifer tarandus pearyi): Implications for tracing seasonal and temporal changes in diet
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Qamanirjuaq (Rangifer tarandus groenlandicus) 和班克斯岛 (Rangifer tarandus pearyi) 现代驯鹿下颌中稳定碳 (δ13C) 和氮 (δ15N) 同位素的个体内变化:对追踪饮食季节性和时间变化的影响

DOI:
10.1002/oa.1220
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发表时间:
2012
影响因子:
1
通讯作者:
A. Pike-Tay
A. Pike-Tay
中科院分区:
人文科学4区
文献类型:
--
作者:
Drucker;Hobson;Münzel;A. Pike-Tay

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有蹄类动物牙齿中牙本质胶原蛋白的碳(δ13C)和氮(δ15N)同位素测量的个体内差异可能与动物生命中不同时期的饮食和环境变化有关。对加拿大 Qamanirjuaq 群 (Rangifer tarandus groenlandicus) 的现代驯鹿(17-27 个月大)应用了第一、第二和第三磨牙根的连续采样方案。根据之前的研究,我们预测 M2 将反映冬季,M3 反映夏季,M1 反映一整年的同位素记录。在不同标本的不同磨牙中发现了相对较高的 δ15N 值(约 6 至 8‰),先前归因于冬季压力,反映了 1966 年 4 月至 1967 年 4 月之间的生长时期。之前对同一群体的其他牙齿的结果证实,高 δ15Ncoll 值信号对应于 1966/67 年的冬季。 δ15N 值的暂时增加可能与饮食和/或环境变化有关。 M1 的胶原蛋白反映了幼年驯鹿生命的第一个冬天,而 M2 和 M3 则反映了生命的第二个冬天。包括夏季在内的较长时间记录是由下颌骨的骨胶原蛋白代表的。对班克斯岛驯鹿群(Rangifer tarandus pearyi)的现代驯鹿的臼齿根和下颌骨获得的结果证实了这一季节性记录。这种对 M1、M2 和 M3 根和颌骨的胶原同位素分析可应用于考古遗址中发现的驯鹿。保留乳前磨牙的下颌骨更可取,以避免在 2 岁以上动物中观察到的冬季牙齿信号可能丢失。版权所有 © 2010 约翰威利父子有限公司
Intra‐individual variations in carbon (δ13C) and nitrogen (δ15N) isotope measurements of dentine collagen in ungulate teeth can be related to diet and environmental changes at different periods during the life of the animal. A protocol of serial sampling of first, second and third molar roots was applied to modern caribou (17–27 months old) of the Qamanirjuaq herd (Rangifer tarandus groenlandicus), Canada. Based on a previous study, we predicted that M2 would reflect winter, M3 summer and M1 a complete year in terms of the isotopic record. Relatively high δ15N values (ca. 6 to 8‰), previously attributed to winter stress, were found in different molars of different specimens, reflecting a period of growth between April 1966 to April 1967. Previous results on other teeth from the same population confirmed that a high δ15Ncollvalue signal corresponded to the winter of 1966/67. This temporary increase in δ15N value was probably linked to diet and/or environmental change. Collagen from M1 reflects the first winter whereas M2 and M3 reflect the second winter of life of young caribou. A longer time record including summer is represented by the bone collagen of the mandible. Results obtained on molar roots and mandible bone of the modern caribou of Banks Island herd (Rangifer tarandus pearyi) confirmed this seasonal record. Such collagen isotopic analysis on M1, M2 and M3 roots and jawbone can be applied to reindeer found in archaeological sites. Mandibles retaining deciduous premolars are preferable to avoid the possible loss of the winter tooth signal observed in animals older than 2 years. Copyright © 2010 John Wiley & Sons, Ltd.
DOI: 10.1016/s0016-7037(98)00114-8
发表时间: 1998-06-01
影响因子: 5
作者:
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发表时间: 1992
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发表时间: 2006
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DOI: --
发表时间: 1978
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作者:
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