Exploring the diversity of Asian Cryptocercus (Blattodea : Cryptocercidae): species delimitation based on chromosome numbers, morphology and molecular analysis
Exploring the diversity of Asian Cryptocercus (Blattodea : Cryptocercidae): species delimitation based on chromosome numbers, morphology and molecular analysis
复制标题
探索亚洲隐尾蚴（Blattodea：Cryptocercidae）的多样性：基于染色体数量、形态和分子分析的物种界定
DOI：
10.1071/is17003
复制
发表时间：
2018-01-01
影响因子：
2.2
通讯作者：
Che, Yanli
中科院分区：
文献类型：
--
作者：
Bai, Qikun;Wang, Lili;Che, Yanli
抽象。来自隐尾虫属的Woodroaches Scudder，1862已知显示低水平的形态分歧，但显着的遗传分歧和染色体数目的变异。与北美洲的隐尾虫属相比，亚洲隐尾虫属的多样性较少受到关注。我们进行了形态学和核型检查的多个类群从几个以前未采样的中国中部和西南部的山区，并确定了9个候选种主要的染色体数目的基础上。然后，我们调查了所有亚洲隐尾虫的多样性，通过系统发育分析的135 COI序列和74个28 S rRNA序列从个人的28个地点，包括物种界定分析一般混合圣诞节聚结（GMYC）和自动条形码差距发现（ABGD）。系统发育分析结果表明，来自同一地点的个体构成了支持性较好的分支。GMYC和ABGD结果的一致性几乎完全雅阁，根据核型描述了28个候选种（包括本研究中鉴定的9个）。我们提供的证据表明，在横断山脉的每个山谷人口包含一个单独的进化谱系。青藏高原的隆升是中国隐尾虫多样性丰富的主要原因。
Abstract. Woodroaches from the genus Cryptocercus Scudder, 1862 are known to display low levels of morphological divergence, yet significant genetic divergence and variability in chromosome number. Compared with Cryptocercus taxa from North America, the diversity of the genus in Asia has received relatively little attention. We performed morphological and karyotypic examinations of multiple taxa from several previously unsampled mountainous areas of central and south-western China, and identified nine candidate species primarily on the basis of chromosome number. We then investigated diversity across all Asian Cryptocercus, through phylogenetic analyses of 135 COI sequences and 74 28S rRNA sequences from individuals of 28 localities, including species delimitation analysis in General Mixed Yule Coalescent (GMYC) and Automatic Barcode Gap Discovery (ABGD). Phylogenetic results indicated that individuals from the same locality constituted well supported clades. The congruence of GMYC and ABGD results were in almost perfect accord, with 28 candidate species described on the basis of karyotypes (including the nine identified in this study). We provide evidence that each valley population in the Hengduan Mountains contains a separate evolving lineage. We conclude that the principal cause of the rich Cryptocercus diversity in China has been the uplift of the Qinghai-Tibet Plateau.