Collier Glen E, Murphy William J, Espinoza Michael
Department of Biological Science, The University of Tulsa, 800 S. Tucker Avenue, Tulsa, OK 74104-3189, USA.
Mol Phylogenet Evol. 2009 Jan;50(1):190-6. doi: 10.1016/j.ympev.2008.10.006. Epub 2008 Oct 19.
There are six major genera of aplocheiloid killifishes endemic to West Africa. Five of these are largely restricted to the two major blocks of rainforest. Two are found within the Eastern rainforest block (Nigeria to the central Congo) while three are found within the Western rainforest block (Sierra Leone to Togo). The sixth genus (Epiplatys) has a range that exceeds that of the combined area of the other five genera. Phylogenetically this genus is related to the Western rainforest taxa. Phylogeographic analysis of this genus suggests that it escaped the confines of the Western block by first expanding into lowland habitats exposed after a sea level drop and then dispersed along coastal habitats to the east. One lineage managed to penetrate the interior of the Eastern rainforest block and one derivative of this lineage penetrated the Congo basin. A second route out of the Western rainforest block was to the north through what is now savannah habitat. The greater phylogeographic range of Epiplatys is hypothesized to be due to retention of ancestral morphology related to a greater adaptability compared to the other five genera.
有六种主要的非洲胎鳉科鳉鱼是西非特有的。其中五种主要分布在两大片热带雨林地区。两种分布在东部雨林地区（从尼日利亚到刚果中部），而三种分布在西部雨林地区（从塞拉利昂到多哥）。第六个属（Epiplatys）的分布范围超过了其他五个属的总面积。从系统发育角度来看，这个属与西部雨林类群有关。对这个属的系统地理学分析表明，它首先通过扩展到海平面下降后暴露的低地栖息地，从而摆脱了西部区域的限制，然后沿着沿海栖息地向东扩散。一个谱系成功地深入到东部雨林地区的内部，并且这个谱系的一个分支深入到了刚果盆地。从西部雨林地区出去的第二条路线是向北穿过现在的稀树草原栖息地。据推测，Epiplatys更大的系统地理学范围是由于保留了与其他五个属相比具有更强适应性的祖先形态。
