Barcoding snakeheads (Teleostei, Channidae) revisited: Discovering greater species diversity and resolving perpetuated taxonomic confusions.
Barcoding snakeheads (Teleostei, Channidae) revisited: Discovering greater species diversity and resolving perpetuated taxonomic confusions.
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DOI：
10.1371/journal.pone.0184017
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发表时间：
2017
期刊：
影响因子：
3.7
通讯作者：
Rüber L
中科院分区：
文献类型：
--
作者：
Conte-Grand C;Britz R;Dahanukar N;Raghavan R;Pethiyagoda R;Tan HH;Hadiaty RK;Yaakob NS;Rüber L
乌鳢科鱼类是分布于非洲和亚洲的肉食性淡水硬骨鱼类，共有38种。乌鳢是重要的食用鱼（水产养殖，活的食品贸易），并已被广泛引入，其中几个物种成为高度入侵。Serrao及其同事最近组装了一个通道条形码库，以更好地检测和识别潜在的和已建立的入侵黑鱼物种。将我们自己最近的系统发育结果与以前报道的结果进行比较，发现了一些不一致之处，促使我们扩大和改进以前的研究。通过生成343个新的蛇头coxI序列，并将它们与来自GenBank的另外434个coxI序列相结合，我们强调了先前努力组装蛇头参考条形码文库的几个问题。我们发现，16.3%的channid coxI序列存储在GenBank中是基于错误的鉴定。然而，通过纳入我们自己的数据，我们能够解决这些长期存在的分类混乱的情况。我们采用的不同物种划界方法（BIN，GMYC和PTP）是一致的，表明黑鱼内的物种多样性可能比目前公认的要高得多。总共回收了90个生物识别号，在总共15个目前确认的物种中，确定了多个生物识别号。这种较高的物种多样性主要是由于纳入未描述的，范围狭窄，特有的东喜马拉雅生物多样性热点或纳入几个广泛分布的物种，其特征是地理上明确界定的谱系之间的深刻的遗传分裂。在后一种情况下，过去的过度集中已经缩小了实际物种数量。进一步的整合方法显然是需要提供一个更好的分类学的理解黑鱼的多样性，新物种的描述和分类修订组。
Snakehead fishes of the family Channidae are predatory freshwater teleosts from Africa and Asia comprising 38 valid species. Snakeheads are important food fishes (aquaculture, live food trade) and have been introduced widely with several species becoming highly invasive. A channid barcode library was recently assembled by Serrao and co-workers to better detect and identify potential and established invasive snakehead species outside their native range. Comparing our own recent phylogenetic results of this taxonomically confusing group with those previously reported revealed several inconsistencies that prompted us to expand and improve on previous studies. By generating 343 novel snakehead coxI sequences and combining them with an additional 434 coxI sequences from GenBank we highlight several problems with previous efforts towards the assembly of a snakehead reference barcode library. We found that 16.3% of the channid coxI sequences deposited in GenBank are based on misidentifications. With the inclusion of our own data we were, however, able to solve these cases of perpetuated taxonomic confusion. Different species delimitation approaches we employed (BIN, GMYC, and PTP) were congruent in suggesting a potentially much higher species diversity within snakeheads than currently recognized. In total, 90 BINs were recovered and within a total of 15 currently recognized species multiple BINs were identified. This higher species diversity is mostly due to either the incorporation of undescribed, narrow range, endemics from the Eastern Himalaya biodiversity hotspot or the incorporation of several widespread species characterized by deep genetic splits between geographically well-defined lineages. In the latter case, over-lumping in the past has deflated the actual species numbers. Further integrative approaches are clearly needed for providing a better taxonomic understanding of snakehead diversity, new species descriptions and taxonomic revisions of the group.
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DOI：
10.1093/bioinformatics/bts199
发表时间：
2012-06-15
期刊：
Bioinformatics (Oxford, England)
影响因子：
--
作者：
Kearse M;Moir R;Wilson A;Stones-Havas S;Cheung M;Sturrock S;Buxton S;Cooper A;Markowitz S;Duran C;Thierer T;Ashton B;Meintjes P;Drummond A
通讯作者：
Drummond A
影响因子：
6.5
作者：
Fujisawa T;Barraclough TG
通讯作者：
Barraclough TG
影响因子：
3.7
作者：
Kekkonen M;Mutanen M;Kaila L;Nieminen M;Hebert PD
通讯作者：
Hebert PD
影响因子：
3.7
作者：
Khedkar GD;Jamdade R;Naik S;David L;Haymer D
通讯作者：
Haymer D
影响因子：
6.5
作者：
Lohse, Konrad
通讯作者：
Lohse, Konrad