Discordant temporal and geographic patterns in maternal lineages of eastern north American frogs, Rana catesbeiana (Ranidae) and Pseudacris crucifer (Hylidae)
Discordant temporal and geographic patterns in maternal lineages of eastern north American frogs, Rana catesbeiana (Ranidae) and Pseudacris crucifer (Hylidae)
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DOI：
10.1016/j.ympev.2004.03.006
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发表时间：
2004-09-01
影响因子：
4.1
通讯作者：
Boag, PT
中科院分区：
文献类型：
--
作者：
Austin, JD;Lougheed, SC;Boag, PT
更新世是否对最近温带物种的多样化产生了不成比例的影响，或者在一个更持久的过程中发挥了较小的作用，一直是过去十年的一个突出的进化争论。我们使用细胞色素 b 序列来重建两种广泛共同分布且生态上不同的青蛙（Rana catesbeiana 和 Pseudcris crucifer）的进化历史，以研究更新世在构建这些物种中的作用。 R. catesbeiana 的结果反映了一种异域破碎的模式，很可能出现在密西西比河两侧的沿海平原保护区，其历史可以追溯到更新世中早期。相比之下，十字花科十字花科植物包含许多不同的谱系，包括内陆高地密西西比河以西的一个谱系，以及东部的多个谱系，这些谱系可能是从阿巴拉契亚南部的一些保护区扩展而来的，谱系分裂起源于上新世晚期。这些物种与北美东部其他物种之间的大规模系统发育地理学比较反映了一致和独立的多样化模式，可能反映了分散能力和栖息地关联的相对重要性。尽管谱系内多样化是由更新世重复的冰川作用所构建的，但迄今为止研究的大多数（但不是全部）北温带两栖动物和爬行动物物种的谱系分裂可能至少可以追溯到上新世。 (C) 2004 Elsevier Inc. 保留所有权利。
Whether the Pleistocene has had a disproportionate impact on the recent diversification of temperate species, or played a lesser role in a more protracted process, has been a prominent evolutionary debate for the past decade. We used cytochrome b sequences to reconstruct the evolutionary histories of two widely co-distributed, and ecologically divergent frogs (Rana catesbeiana and Pseudacris crucifer) to examine the role of the Pleistocene in structuring these species. Results for R. catesbeiana reflect a pattern of allopatric fragmentation, likely in Coastal Plain refugia on either side of the Mississippi River dating to the mid to early Pleistocene. In contrast, P. crucifer contains numerous divergent lineages, including one west of the Mississippi River in the Interior Highlands, and in the east, multiple lineages that likely expanded from a number of southern Appalachian refugia with lineage sundering originating in the late Pliocene. Large-scale phylogeographic comparisons between these and other eastern North American species reflect both congruent and independent patterns of diversification, possibly reflecting the relative importance of dispersal ability and habitat associations. Although intra-lineage diversification has been structured by repeated Pleistocene glaciations, lineage sundering likely dates at least to the Pliocene in most (but not all) northern temperate amphibian and reptile species studied to date. (C) 2004 Elsevier Inc. All rights reserved.