Food Water Contribution to the Oxygen Isotope Composition of Land Snail Body Water and Its Environmental Implication
Food Water Contribution to the Oxygen Isotope Composition of Land Snail Body Water and Its Environmental Implication
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DOI：
10.1029/2018gc007468
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发表时间：
2018-06
期刊：
影响因子：
3.7
通讯作者：
N. Zhang;K. Yamada;N. Yoshida
中科院分区：
文献类型：
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作者：
N. Zhang;K. Yamada;N. Yoshida
这是第一项针对实验室耕作土地蜗牛的氧同位素组成（δ 18 O）的研究。在各种受控的环境参数下饲养陆生蜗牛，以便对Balakrishnan和Yapp开发的通量平衡模型的有效性进行评估（）。水体δ 18 O值与供水δ 18 O值的斜率表明，食物水是陆生蜗牛水体的重要来源（19 - 37%）。然而，通量平衡模型没有考虑到这个水源。我们提出了一个新的框架来理解陆生蜗牛体液的来源和控制因素，这将有助于未来利用陆生蜗牛化石重建古环境的研究。研究还表明，生活在非最佳条件（如低温）下的蜗牛可以适应其生物学行为，这反过来又会影响体液和外壳的δ 18 O值，从而导致δ 18 O值偏离最佳温度下的蜗牛。
This is the first study focused on the oxygen isotope composition (δ18O) of laboratory‐cultivated land snails. Land snails were raised under various controlled environmental parameters, permitting an evaluation of the effectiveness of the flux balance model developed by Balakrishnan and Yapp ( ). The slope of body water δ18O values vs. provided water δ18O values, suggest that food water is an important source (19‐37%) of land snail body water. However, the flux balance model does not account for this water source. We suggest a revised framework to understand the sources and controlling factors of the land snail body fluid, which should be helpful to future studies on paleo‐environment reconstruction using land snail fossils. This investigation also indicates that snails living in non‐optimal conditions (e.g. low temperature) can adapt their biological behaviors to the environment, which will in turn affect the δ18O values of both body fluid and shells, giving rise to δ18O values which deviate from those of snails living at optimal temperatures.