海洋哺乳动物古生态研究中骨和牙本质δ13C和δ15N的结合:来自齿鲸的见解。

IF 1.1 4区 环境科学与生态学 Q4 CHEMISTRY, INORGANIC & NUCLEAR
Alba Rey-Iglesia, Tess Wilson, Jennifer Routledge, Mikkel Skovrind, Eva Garde, Mads Peter Heide-Jørgensen, Paul Szpak, Eline D Lorenzen
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引用次数: 0

摘要

从博物馆标本中提取的骨和牙本质胶原蛋白的稳定碳(δ13C)和氮(δ15N)同位素组成已被广泛用于研究过去种群的古生态。由于骨和牙本质之间的稳定同位素值可能存在系统性差异,因此需要使用校正因子将牙本质值转换为骨-胶原当量,以便对两种胶原来源进行比较。本文采用校正因子将独角鲸和白鲸两种齿鲸的牙本质δ13C和δ15N值转化为骨胶原等价物。我们从11头独角鲸和26头白鲸的头骨上取样了骨头和牙本质。在独角鲸身上,牙本质是从长牙和嵌牙中取样的;在白鲸身上,牙本质是从牙齿上取样的。测量了δ13C和δ15N,并使用个体内骨和牙本质同位素组成来计算每个物种的校正因子。我们检测到δ13C和δ15N的差异。独角鲸和白鲸骨骼的δ13C和δ15N平均值均低于牙本质。该研究提供的校正因子能够对这些物种的骨和牙本质的稳定同位素数据进行综合分析。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Combining δ13C and δ15N from bone and dentine in marine mammal palaeoecological research: insights from toothed whales.

Stable carbon (δ13C) and nitrogen (δ15N) isotopic compositions of bone and dentine collagen extracted from museum specimens have been widely used to study the paleoecology of past populations. Due to possible systematic differences in stable isotope values between bone and dentine, dentine values need to be transformed into bone-collagen equivalent using a correction factor to allow comparisons between the two collagen sources. Here, we provide correction factors to transform dentine δ13C and δ15N values into bone-collagen equivalent for two toothed whales: narwhal and beluga. We sampled bone and dentine from the skulls of 11 narwhals and 26 belugas. In narwhals, dentine was sampled from tusk and embedded tooth; in belugas, dentine was sampled from tooth. δ13C and δ15N were measured, and intra-individual bone and dentine isotopic compositions were used to calculate correction factors for each species. We detected differences in δ13C and δ15N. In both narwhals and belugas, we found lower average δ13C and δ15N in bone compared with dentine. The correction factors provided by the study enable the combined analysis of stable isotope data from bone and dentine in these species.

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来源期刊
CiteScore
2.80
自引率
7.70%
发文量
21
审稿时长
3.0 months
期刊介绍: Isotopes in Environmental and Health Studies provides a unique platform for stable isotope studies in geological and life sciences, with emphasis on ecology. The international journal publishes original research papers, review articles, short communications, and book reviews relating to the following topics: -variations in natural isotope abundance (isotope ecology, isotope biochemistry, isotope hydrology, isotope geology) -stable isotope tracer techniques to follow the fate of certain substances in soil, water, plants, animals and in the human body -isotope effects and tracer theory linked with mathematical modelling -isotope measurement methods and equipment with respect to environmental and health research -diagnostic stable isotope application in medicine and in health studies -environmental sources of ionizing radiation and its effects on all living matter
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