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首页> 外文期刊>Chinese science bulletin >The phylogenetic relationship of the family Lutjanidae based on analyses of AFLP and mitochondrial 12S rRNA sequences
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The phylogenetic relationship of the family Lutjanidae based on analyses of AFLP and mitochondrial 12S rRNA sequences

机译：基于AFLP和线粒体12S rRNA序列分析的Lutjanidae科系统发育关系

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摘要

Fishes of the family Lutjanidae are commercially important in South China Sea. However, the phylogeny of Lutjanids is still unclear and there are many controversies over it. Herein, studies about the phylogeny of Lutjanids were performed based on Amplified Fragment Length Polymorphism (AFLP) analysis of genome DNA and sequence analysis of mitochondrial 12S rRNA gene, and 10 Lutjanidae species and 1 Lethrinidae species were employed. The topologies of minimum evolution (ME) trees based on the two analyses respectively were congruent except for positions of genera Pristipomoides and Caesio. The optimal substitution model TrN + G for DNA sequences of 12S rRNA genes in Lutjanids was obtained using MODELTEST 3.6 software and maximum likelihood (ML) analysis supports the topology displayed by the ME tree. The test of log-likelihood suggests that the use of molecular clock calibrations to estimate species divergence time appeared valid. Phylogenetic analyses using AFLP data and DNA sequences of mitochondrial 12S rRNA genes indicated the monophyly of Lutjanus genra. However, further studies are required to reveal the phylogenetic relationship among other genera. In addition, the results demonstrated that AFLP genetic marker was suitable for the phylogenetic analysis of Lutjanids.
机译：Lutjanidae科的鱼类在南中国海具有重要的商业意义。但是，尚不清楚Lutjanids的系统发育，并且存在许多争议。在此，基于基因组DNA的扩增片段长度多态性（AFLP）分析和线粒体12S rRNA基因的序列分析，进行了Lutjanids系统发育的研究，并且使用了10个Lutjanidae种和1个丝藻科。分别基于这两种分析的最小进化（ME）树的拓扑是一致的，除了Pristipomoides和Caesio属的位置。使用MODELTEST 3.6软件获得了Lutjanids中12S rRNA基因的DNA序列的最佳替代模型TrN + G，并且最大似然（ML）分析支持ME树显示的拓扑。对数似然性的测试表明，使用分子钟校准来估计物种发散时间似乎是有效的。使用AFLP数据和线粒体12S rRNA基因的DNA序列进行的系统发育分析表明，Lutjanus属的单性。但是，需要进一步的研究来揭示其他属之间的系统发育关系。此外，结果表明AFLP遗传标记物适合进行Lutjanids的系统发育分析。

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