两动物和爬行动物的最先进的年龄确定方法
Fabio Maria Guarino1, Marcello Mezzasalma2
1Department of Biology, University of Naples Federico II, Via Cinthia 26, 80126 Naples, Italy.
Animals : an open access journal from MDPI
|September 27, 2025
概括
准确确定两动物和爬行动物的年龄至关重要. 捕获-标记-重新捕获 (CMR) 提供了精确性,但需要大量的时间,而骨架年代学为年龄估计提供了可靠的替代方案.
科学领域:
- 类学 类学 类学 类学
- 脊椎动物动物学 脊椎动物动物学
- 生态方法 生态方法
背景情况:
- 准确的年龄确定对于了解两动物和爬行动物的生命历史,种群动态和保护至关重要.
- 现有的年龄估计方法在可靠性,适用性和侵入性方面各不相同.
研究的目的:
- 为两动物和爬行动物提供当前年龄确定方法的全面概述和批判性评估.
- 评估各种年龄估计技术的方法原则,实用性和局限性.
主要方法:
- 审查和批判性分析已建立的年龄确定技术,包括捕获-标记-重新捕获 (CMR) 和骨架年代学.
- 评估间接方法,如计算表皮皮,皮肤和爪上的生长标记.
- 探索新兴的分子方法,包括端粒长度和DNA甲基化分析.
主要成果:
- 捕获-标记-重新捕获 (CMR) 是最可靠的方法来精确地测定野生动物的年龄,但它耗时且不适用于所有人.
- 基于硬组织中解释生长标志 (停止生长线 - LAG) 的骨年代学是一种高度可靠的间接方法,广泛用于两动物和爬行动物.
- 其他间接方法 (切割,,爪) 通常不太可靠或适用性有限.
- 诸如端粒长度和DNA甲基化等分子方法作为微侵袭技术具有前景,但需要在不同物种中进一步验证.
结论:
- 骨年代学仍然是两动物和爬行动物年龄估计的强大和广泛适用的方法.
- 新兴的分子技术为不那么侵入性地确定年龄提供了潜力,但需要进一步的研究和标准化.
- 选择年龄估计方法时,应考虑物种特定的生物学,研究问题和可用的资源.
相关概念视频
What is Evolutionary History?
Scientists record evolutionary history by analyzing fossil, morphological, and genetic data. The fossil record documents the history of life on Earth and provides evidence for evolution. However, both fossil and living organisms offer evidence that outlines Earth’s evolutionary history.Phylogenetic trees illustrate the evolutionary relationships among these organisms. Scientists infer organisms’ common ancestry by evaluating shared morphological and genetic characteristics. Together, the fossil...
Radioactive Decay and Radiometric Dating
Radioactivity is a spontaneous disintegration of an unstable nuclide and is a random process, as all the nuclei in the sample do not decay simultaneously. The number of disintegrations per unit time is called the activity (A), which is directly proportional to the number of nuclei in the sample. The decay constant (λ) is an average probability of decay per nucleus in unit time.
The Fossil Record
The fossil record documents only a small fraction of all organisms that have ever inhabited Earth. Fossilization is a rare process, and most organisms never become fossils. Moreover, the fossil record only exhibits fossils that have been discovered. Nevertheless, sedimentary rock fossils of long-lived, abundant, hard-bodied organisms dominate the fossil record. These fossils offer valuable information, such as an organism's physical form, behavior, and age. Studying the fossil record helps...


