Application of bomb radiocarbon chronologies to shortfin mako (Isurus oxyrinchus) age validation
Application of bomb radiocarbon chronologies to shortfin mako (Isurus oxyrinchus) age validation
复制标题
炸弹放射性碳年代学在短鳍鲭鱼（Isurus oxyrinchus）年龄验证中的应用
DOI：
10.1007/s10641-006-9106-4
复制
发表时间：
2006
影响因子：
1.4
通讯作者：
T. Brown
中科院分区：
文献类型：
--
作者：
D. Ardizzone;G. Cailliet;L. Natanson;A. Andrews;L. Kerr;T. Brown
由于对椎带沉积周期的不同，对短鳍金枪鱼的年龄估计是一个问题。在20世纪50-60年代，热核试验向大气中释放了大量放射性碳，这些放射性碳通过气体交换扩散到海洋中。这种涌入创造了一个特定时间的标记，可以用于年龄验证。在先前的一项研究中，通过对一个脊椎骨的四个样本的研究，证实了海豚的年度带状沉积，并初步表明短鳍沙鼠的年沉积。在本研究中，从1950-1984年收集的54个短鳍椎的年龄估计在1-31岁之间。读者之间的年龄误差是一致的，76%的估计在两年内不等。从1963年至1984年在北大西洋西部采集的8个短鳍马科脊椎骨的21个Δ14C值在−154.8‰到86.8‰之间。结果与Δ14C时间线的结果一致，支持短鳍马科动物椎骨中每年的带状沉积。
Age estimation is an issue for the shortfin mako, Isurus oxyrinchus, because of disagreement on vertebral band-pair deposition periodicity. In the 1950s–1960s, thermonuclear testing released large amounts of radiocarbon into the atmosphere, which diffused into the ocean through gas exchange. This influx created a time-specific marker that can be used in age validation. Annual band-pair deposition in the porbeagle, Lamna nasus, was validated in a previous study and indicated preliminary annual deposition in the shortfin mako, using four samples from one vertebra. In the present study, age estimates from 54 shortfin mako vertebrae collected in 1950–1984 ranged 1–31 years. Ageing error between readers was consistent, with 76% of the estimates ranging within 2 years. Twenty-one Δ14C values from eight shortfin mako vertebrae (collected in the western North Atlantic in 1963–1984) ranged −154.8‰ to 86.8‰. The resulting conformity with the Δ14C timeline for the porbeagle supported annual band-pair deposition in vertebrae of the shortfin mako.
影响因子：
8.3
作者：
STUIVER, M;POLACH, HA
通讯作者：
POLACH, HA