Assessing the relative contribution of molecular and morphological characters in simultaneous analysis trees
Assessing the relative contribution of molecular and morphological characters in simultaneous analysis trees
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DOI：
10.1006/mpev.1998.0519
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发表时间：
1998-06-01
影响因子：
4.1
通讯作者：
DeSalle, R
中科院分区：
文献类型：
--
作者：
Baker, RH;Yu, XB;DeSalle, R
我们研究了15个系统学研究中，这两种数据被用于联合或同时分析的形态和分子特征信息的贡献。评估这些数据来源之间的分歧，测量的不一致长度差异，揭示了大量的冲突调查的研究。此外，分区Bremer支持度被用来衡量一起分析时每个数据分区提供的支持程度。尽管近一半的研究发现了显着的不一致，PBS指数表明，这两种类型的数据有助于积极的综合分析，当标准化的遗传信息字符的数量，形态学数据通常提供相等或更大的支持比分子数据。这一结果，结合形态特征通常表现出更高的一致性的事实，表明这种来源的字符信息继续是有用的系统学研究，尽管可用的分子数据的数量不断增加。(C)北京：科学出版社.
We examined the contribution of morphological and molecular character information for 15 systematics studies in which these two kinds of data were used in combined or simultaneous analyses. Assessment of the disagreement between these data sources, as measured by the incongruence length difference, reveals substantial conflict for the studies surveyed. In addition, the partitioned Bremer support was used to measure the degree of support provided by each data partition when analyzed together. Despite the significant incongruence found for nearly half the studies, the PBS indices suggest both types of data contribute positively to the combined analyses and that, when standardized by the number of phylogenetically informative characters, morphology data generally provide equal or greater support than do the molecular data. This result, combined with the fact that morphological characters generally exhibit higher consistency, indicates that this source of character information continues to be useful in systematics studies despite the increasing volume of available molecular data. (C) 1998 Academic Press.