A New Integrated Approach to Taxonomy: The Fusion of Molecular and Morphological Systematics with Type Material in Benthic Foraminifera.
A New Integrated Approach to Taxonomy: The Fusion of Molecular and Morphological Systematics with Type Material in Benthic Foraminifera.
复制标题
DOI：
10.1371/journal.pone.0158754
复制
发表时间：
2016
期刊：
影响因子：
3.7
通讯作者：
Darling K
中科院分区：
文献类型：
--
作者：
Roberts A;Austin W;Evans K;Bird C;Schweizer M;Darling K
在古环境研究和生物多样性长期评估中使用化石材料的基础是一个强大而一致的分类学。这项研究提出了一个新的综合底栖有孔虫的分类协议，明确协调传统的分类名称，以一个特定的遗传类型。为了实现这一协议，一个片段的小亚基核糖体RNA（SSU rRNA）基因的组合与16个定量形态测量变量，以充分验证底栖有孔虫种的概念Elphidium willensoni海恩斯，1973年。在这项研究中使用了活的当代拓扑型标本，原始类型标本和遗传离群值标本的组合。通过一系列的多元统计检验，我们表明，遗传特征的地形模式标本是形态一致的正模式和副模式标本的E。1973年，威廉·海恩斯。我们首次提出了形态特征类型材料与大肠杆菌独特的SSU rRNA遗传类型之间的明确联系。威勒索尼。这个例子为底栖有孔虫提供了一个标准框架，它弥合了目前分子和形态学证据之间的不连续性，使其与传统的林奈命名法的根源相结合，为分类学的稳定性提供了一个新的前景。
A robust and consistent taxonomy underpins the use of fossil material in palaeoenvironmental research and long-term assessment of biodiversity. This study presents a new integrated taxonomic protocol for benthic foraminifera by unequivocally reconciling the traditional taxonomic name to a specific genetic type. To implement this protocol, a fragment of the small subunit ribosomal RNA (SSU rRNA) gene is used in combination with 16 quantitative morphometric variables to fully characterise the benthic foraminiferal species concept of Elphidium williamsoni Haynes, 1973. A combination of live contemporary topotypic specimens, original type specimens and specimens of genetic outliers were utilised in this study. Through a series of multivariate statistical tests we illustrate that genetically characterised topotype specimens are morphologically congruent with both the holotype and paratype specimens of E. williamsoni Haynes, 1973. We present the first clear link between morphologically characterised type material and the unique SSU rRNA genetic type of E. williamsoni. This example provides a standard framework for the benthic foraminifera which bridges the current discontinuity between molecular and morphological lines of evidence, allowing integration with the traditional Linnaean roots of nomenclature to offer a new prospect for taxonomic stability.