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Title: Delimiting species of Protaphorura (Collembola: Onychiuridae): integrative evidence based on morphology, DNA sequences and geography
Author: X. Sun, F. Zhang, Y. H. Ding, T. W. Davies, Y. Li and D. H. Wu
Corresponding Author: Zhang, F. 吴东辉
Source: Scientific Reports
Issued Date: 2017
DOI: 10.1038/S41598-017-08381-4
Volume: 7
Abstract: Species delimitation remains a significant challenge when the diagnostic morphological characters are limited. Integrative taxonomy was applied to the genus Protaphorura (Collembola: Onychiuridae), which is one of most difficult soil animals to distinguish taxonomically. Three delimitation approaches (morphology, molecular markers and geography) were applied providing rigorous species validation criteria with an acceptably low error rate. Multiple molecular approaches, including distance-and evolutionary model-based methods, were used to determine species boundaries based on 144 standard barcode sequences. Twenty-two molecular putative species were consistently recovered across molecular and geographical analyses. Geographic criteria were was proved to be an efficient delimitation method for onychiurids. Further morphological examination, based on the combination of the number of pseudocelli, parapseudocelli and ventral mesothoracic chaetae, confirmed 18 taxa of 22 molecular units, with six of them described as new species. These characters were found to be of high taxonomical value. This study highlights the potential benefits of integrative taxonomy, particularly simultaneous use of molecular/geographical tools, as a powerful way of ascertaining the true diversity of the Onychiuridae. Our study also highlights that discovering new morphological characters remains central to achieving a full understanding of collembolan taxonomy.
WOS ID: WOS:000407570000138
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Content Type: 期刊论文
URI: http://ir.iga.ac.cn/handle/131322/7539
Appears in Collections:湿地与全球变化学科组_期刊论文

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