Phylogeographic Diversity of the Lower Central American Cichlid Andinoacara coeruleopunctatus (Cichlidae)
Phylogeographic Diversity of the Lower Central American Cichlid Andinoacara coeruleopunctatus (Cichlidae)
复制标题
中美洲下游丽鱼科 Andinoacara coeruleopunctatus（丽鱼科）的系统发育多样性
DOI：
10.1155/2012/780169
复制
发表时间：
2012
期刊：
影响因子：
--
通讯作者：
E. Bermingham
中科院分区：
文献类型：
--
作者：
S. McCafferty;Andrew P. Martin;E. Bermingham
历史和生态过程是淡水沉积组合的重要决定因素。系统地理学可以潜在地提供重要的见解的相对贡献的历史进程中的地理。然而，植被地理学反映排水连接的历史模式的程度可能在很大程度上取决于物种的扩散能力。在这里，我们测试的假设，由于其相对较大的传播能力，新热带区慈鲷属物种Andinoacara coeruleopunctatus将显示一个不同的地理模式，从以前描述的在这一重要地区的生物学组合。基于对318个个体的线粒体ATP酶6/8序列和限制性片段长度多态性数据的分析，我们发现了8个不同的分支，与地理模式密切相关。分支之间的分支模式和贝叶斯时钟分析表明，相对快速的殖民化和多样化的排水系统在巴拿马的紧急地峡，其次是合并的一些排水系统，由于历史的联系。我们还提出了证据，广泛的跨科迪勒拉共享在巴拿马中部和运河地区的分支。我们的研究结果表明，当代的地理格局和多样化的中美洲鱼类反映了历史排水连接，扩散和人口过程的相互作用。
It is well appreciated that historical and ecological processes are important determinates of freshwater biogeographic assemblages. Phylogeography can potentially lend important insights into the relative contribution of historical processes in biogeography. However, the extent that phylogeography reflects historical patterns of drainage connection may depend in large part on the dispersal capability of the species. Here, we test the hypothesis that due to their relatively greater dispersal capabilities, the neotropical cichlid species Andinoacara coeruleopunctatus will display a phylogeographic pattern that differs from previously described biogeographic assemblages in this important region. Based on an analysis of 318 individuals using mtDNA ATPase 6/8 sequence and restriction fragment length polymorphism data, we found eight distinct clades that are closely associated with biogeographic patterns. The branching patterns among the clades and a Bayesian clock analysis suggest a relatively rapid colonization and diversification among drainages in the emergent Isthmus of Panama followed by the coalescing of some drainages due to historical connections. We also present evidence for extensive cross-cordillera sharing of clades in central Panama and the Canal region. Our results suggest that contemporary phylogeographic patterns and diversification in Lower Central American fishes reflect an interaction of historical drainage connections, dispersal, and demographic processes.