Patterns of evolution in the scleractinian coral genus Montipora (Acroporidae)
Patterns of evolution in the scleractinian coral genus Montipora (Acroporidae)
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石珊瑚属 Montipora（顶孔珊瑚科）的进化模式
DOI：
10.1007/s00227-003-1188-3
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发表时间：
2004
期刊：
影响因子：
2.4
通讯作者：
John Veron
中科院分区：
文献类型：
--
作者：
M. J. H. V. Oppen;M. J. H. V. Oppen;E. M. Koolmees;John Veron
珊瑚进化生物学的关键问题之一是种间杂交在塑造现代珊瑚礁中的重要性。尽管如此，对石珊瑚的物种形成和进化的详细研究还很少。我们使用核和线粒体标记检查了从伊里安查亚（印度尼西亚）和磁岛（大堡礁中部）取样的 25 个物种丰富的石珊瑚属 Montipora 之间的分子关系。线粒体 DNA (mtDNA) 单倍型在多个物种之间共享，并且根据核内含子序列，至少有四个物种不是单系的。此外，尽管线粒体DNA和核树具有相似的拓扑结构，但存在一些重要的不一致之处。这些结果，结合一些Montipora物种之间同时产卵和体外交叉受精的观察，表明该珊瑚属的少数物种之间偶尔会通过种间杂交进行基因交换。形态学和分子关系之间几乎没有观察到相关性。
One of the key issues in coral evolutionary biology is the significance of interspecific hybridisation in shaping modern reef corals. Despite this, few detailed studies of speciation and evolution exist for scleractinians. We examined molecular relationships among 25 species of the species-rich scleractinian genusMontiporasampled from Irian Jaya (Indonesia) and Magnetic Island (central Great Barrier Reef) using a nuclear and mitochondrial marker. Mitochondrial DNA (mtDNA) haplotypes are shared among several species and at least four species are not monophyletic based on the nuclear intron sequences. Moreover, although the mtDNA and nuclear trees have similar topologies, there are several important inconsistencies. These results, in combination with the observation of simultaneous spawning of and in vitro cross-fertility between someMontiporaspecies, suggest that occasional gene exchange through interspecific hybridisation occurs between a small number of species in this coral genus. Little correlation was observed between morphological and molecular relationships.