Do temporal size differences influence species identification of archaeological albatross remains when using modern reference samples?
Do temporal size differences influence species identification of archaeological albatross remains when using modern reference samples?
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DOI：
10.1016/j.jas.2005.07.017
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发表时间：
2006-03-01
影响因子：
2.8
通讯作者：
Higuchi, H
中科院分区：
文献类型：
--
作者：
Eda, M;Baba, Y;Higuchi, H
动物考古学遗迹已被确定为物种，使用基于现代标本中特定形态变化的鉴定标准。然而，由于微观进化和/或表型可塑性，骨骼的时间大小变化可能会扭曲根据这些标准对考古遗迹的鉴定。我们开发了北太平洋信天翁（短尾，Laysan和黑脚信天翁）的物种鉴定标准，使用定量和DNA为基础的分析，并实际上确定了许多考古遗址使用这些标准。我们的定量为基础的标准可以准确地区分现代短尾信天翁从现代Laysan和黑脚信天翁，并表明，考古遗迹包括短尾和Laysan或黑脚信天翁。然而，基于DNA的标准表明，所有遗骸都是短尾信天翁。对这种不一致性最合理的解释是使用基于定量的分析进行错误识别，这是由于骨骼的时间大小变化或存在来自灭绝种群或繁殖区的鸟类，其骨骼与最近的鸟类有定量差异。这是第一项研究表明，根据现代尺寸变化，骨骼的时间尺寸变化可能会扭曲考古遗迹的物种鉴定。需要进一步的研究来判断这种模式是否不寻常。(c)2005爱思唯尔有限公司保留所有权利。
Zooarchaeological remains have been identified to species, using identification criteria based oil specific morphological variations among modern specimens. However, temporal size changes in bones, due to micro-evolution and/or phenotypic plasticity, could distort identification of archaeological remains according to these criteria. We developed species identification criteria for North Pacific albatrosses (Short-tailed, Laysan and Black-footed Albatrosses) using both mensural- and DNA-based analysis and actually identified many archaeological remains from a site using these criteria. Our mensural-based criteria could accurately discriminate the modern Short-tailed Albatross from modern Laysan and Black-footed Albatrosses and indicated that the archaeological remains included both Short-tailed and Laysan or Black-footed Albatrosses. DNA-based criteria, however, suggested that all remains were Short-tailed Albatross. The most plausible explanation for this inconsistency would be misidentification using mensural-based analysis, due to temporal size changes in bones or existence of birds from extinct population(s) or breeding region(s) with mensurally different bones from recent birds. This is the first Study that suggests temporal size changes in bones may distort the species identification of archaeological remains according to modern size variations. Further studies are required to judge if this pattern is unusual or not. (c) 2005 Elsevier Ltd. All rights reserved.