Molecular phylogeny of major lineages of Trichadenotecnum and a review of diagnostic morphological characters (Psocoptera: Psocidae)
Molecular phylogeny of major lineages of Trichadenotecnum and a review of diagnostic morphological characters (Psocoptera: Psocidae)
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DOI：
10.1111/j.0307-6970.2004.00249.x
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发表时间：
2004-07
影响因子：
4.8
通讯作者：
K. Yoshizawa
中科院分区：
文献类型：
--
作者：
K. Yoshizawa
抽象的。根据形态和5个基因区(线粒体12S rDNA、16S rDNA、细胞色素氧化酶I、NADH脱氢酶亚基5和核18S rDNA)的部分序列，推测了Trichadenotecnum物种群之间的系统发育关系。所有的分析都支持Trichadenotecnum的单系性和以前提出的所有物种组，除了圆毛虫被排除在Spiniserrulum组之外。为了检验形态数据在系统发育中的作用，在分子树上简约地定位了用于构建毛状菌早期分类系统的形态特征。其结果是：(1)常用的前翅标记特征(稀疏或广泛斑点)被认为是非常同质的，在较高级别的系统发育关系中信息量较低；(2)广泛扩展的表直叶被认为至少独立进化了两到三次，详细的形态重新检查允许识别这些收敛的结构；(3)性突的短腹瓣至少独立进化了三到四次，尽管这一特征最初被用于诊断棘突群。
Abstract. Phylogenetic relationships among species groups of Trichadenotecnum were inferred based on morphology and the partial sequences of five gene regions (mitochondrial 12S rDNA, 16S rDNA, cytochrome oxidase I, NADH dehydrogenase subunit 5 and nuclear 18S rDNA). All analyses supported the monophyly of Trichadenotecnum and all previously proposed species groups, except that T. circularoides was excluded from the spiniserrulum group. To examine the phylogenetic usefulness of morphological data, the morphological characters used in the construction of an earlier taxonomic system for Trichadenotecnum were mapped parsimoniously on the molecular tree. As a result: (1) commonly used forewing marking features (sparsely or extensively spotted) are considered to be very homoplastic and less informative of higher‐level phylogenetic relationships; (2) a broadly expanded epiproct lobe is considered to be independently evolved at least two or three times, and a detailed morphological re‐examination allows recognition of these convergent structures; (3) the short ventral valve of gonapophyses independently evolved at least three or four times, although this character was used initially to diagnose the spiniserrulum group.