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Novel phylogeographic patterns in a Lowland Fish, Etheostoma proeliare (Percidae)

机译:低地鱼类Etherostoma proeliare(Percidae)中的新系统地理学模式

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Etheostoma proeliare is distributed in the Gulf Coastal Plain of southeastern North America from the Colorado River of eastern Texas through the Choctawhatchee River of eastern Alabama, north to the Fall Line, and upstream along the Arkansas River valley into eastern Oklahoma. Parsimony and Bayesian analysis of the ND2 gene from 28 populations recovered a monophyletic E. proeliare (PP: 1.0) containing a basal split between a novel clade of populations in the northern apex of the Mississippi embayment, from the Black and St. Francis rivers to the west of, through the Yazoo River to the east of, the main channel of the Mississippi River, and all other populations (PB:99, PP: 1.0). Southern populations are resolved into three clades: Trinity plus Neches Rivers (PB: 100, PP: 1.0), Sabine River east through western tributaries to the Mississippi River plus the Lake Pontchartrain drainage (PP: 1.0), and eastern tributaries to the Mississippi River east through the Escambia River (PP:0.99). The eastern clade is further divided into Pearl plus Big Black rivers (PB:97, PP: 1.0) and Mobile Basin plus Escambia River clades (PP:0.98). These results indicate that although the mainstem of the Mississippi River corresponds to some phylogeographic breaks in a lowland species, it is not an absolute barrier. Future studies of species in the region should further explore the placement of Lake Pontchartrain populations and the existence of divergent populations in the northern Gulf Coastal Plain.
机译:Etheostoma proeliare分布在北美东南部的墨西哥湾沿岸平原上,从得克萨斯州东部的科罗拉多河穿过阿拉巴马州东部的Choctawhatchee河,北至Fall Line,再沿阿肯色河谷向上游进入俄克拉荷马州东部。对来自28个种群的ND2基因进行简约和贝叶斯分析,发现了单一种类的大肠埃希氏菌(PP:1.0),其中包含从密西西比河北部顶点的一个新种群进化的基础分裂,从黑河和圣弗朗西斯河到密西西比河的主要河道以西,通过亚祖河以东,以及其他所有人口(PB:99,PP:1.0)。南部人口分为三类:三位一体加内希河(PB:100,PP:1.0),萨宾河以东通过西部支流至密西西比河,再加上庞恰特雷恩湖排水系统(PP:1.0),东部支流为密西西比河向东穿过埃斯坎比亚河(PP:0.99)。东部支流进一步分为珍珠河和大黑河(PB:97,PP:1.0)和莫比尔盆地和埃斯坎比亚河支流(PP:0.98)。这些结果表明,尽管密西西比河的主干对应于低地物种的某些系统学断裂,但它并不是绝对的屏障。对该地区物种的进一步研究应进一步探索庞恰特雷恩湖的种群分布和海湾北部沿海平原北部种群的多样性。

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