Analysis of complete mitochondrial DNA sequences of three members of the Montastraea annularis coral species complex (Cnidaria, Anthozoa, Scleractinia)
Analysis of complete mitochondrial DNA sequences of three members of the Montastraea annularis coral species complex (Cnidaria, Anthozoa, Scleractinia)
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DOI：
10.1007/s00338-005-0023-3
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发表时间：
2005-11-01
期刊：
影响因子：
3.5
通讯作者：
Knowlton, N
中科院分区：
文献类型：
--
作者：
Fukami, H;Knowlton, N
完整的线粒体核苷酸序列的两个个体的每个Montastraea annularis，Montastraea faveolata，和Montastraea franksi进行了测定。基因的组成和顺序显着不同的海葵Metridium老年人，但相同的，与acromegenetically遥远的珊瑚属鹿角珊瑚。然而，非编码区的特点不同的两个石蟹属。在M. annularis复合体的16，134个碱基对中只有25个是可变的。其中16例发生在M. franksi，这（与其他数据一起）表明该物种存在多个不同的线粒体谱系。总的来说，这些线粒体基因组的进化速度非常缓慢（根据M. annularis复合体）。在更高的分类水平，遗传分化和同义/非同义取代模式表明Montastraea和Acropora所属的两个谱系之间的非中性和不平等的进化速率。
Complete mitochondrial nucleotide sequences of two individuals each of Montastraea annularis, Montastraea faveolata, and Montastraea franksi were determined. Gene composition and order differed substantially from the sea anemone Metridium senile, but were identical to that of the phylogenetically distant coral genus Acropora. However, characteristics of the non-coding regions differed between the two scleractinian genera. Among members of the M. annularis complex, only 25 of 16,134 base pair positions were variable. Sixteen of these occurred in one colony of M. franksi, which (together with additional data) indicates the existence of multiple divergent mitochondrial lineages in this species. Overall, rates of evolution for these mitochondrial genomes were extremely slow (0.03-0.04% per million years based on the fossil record of the M. annularis complex). At higher taxonomic levels, patterns of genetic divergence and synonymous/nonsynonymous substitutions suggest non-neutral and unequal rates of evolution between the two lineages to which Montastraea and Acropora belong.