Cryptic lineages in a small frog:: the post-glacial history of the spring peeper, Pseudacris crucifer (Anura:Hylidae)
Cryptic lineages in a small frog:: the post-glacial history of the spring peeper, Pseudacris crucifer (Anura:Hylidae)
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DOI：
10.1016/s1055-7903(02)00260-9
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发表时间：
2002-11-01
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
春蝉（Pseudacris crucifer）被认为是北美东部最近一次冰川退缩后的主要爬虫类入侵者。我们研究了P. crucifer的地理分布格局和种群结构，以确定单倍型变异的分布是否反映了更新世后的进化动力学。一些地理上孤立的进化谱系支持最大简约和相邻连接分析，并适用于mtDNA的聚结方法。西南部的安大略代表了高水平的基因型多样性（pi），由于存在两个不同的血统。这些谱系的地理分布被解释为反映冰后期的独立，孤立的避难所在更新世晚期，已进入二次接触，在西南安大略的tenonization动态。来自P. crucifer bartramiana（佛罗里达和南卡罗来纳州）的单倍型的系统发育位置不允许P. crucifer crucifer的单系性，因此bartramiana亚种名称并不反映单独的进化谱系。(C)2002 Elsevier Science（美国）。All rights reserved.
The spring peeper (Pseudacris crucifer) is believed to have been a primary herpetological invader of eastern North America following the most recent period of glacial retreat. We examined the phylogeographic pattern and population structure of P. crucifer to determine whether the distribution of haplotypic variants reflect post-Pleistocene recolonization dynamics. A number of geographically isolated evolutionary lineages were supported by both maximum parsimony and neighbor-joining analyses, and by coalescence approaches applied to mtDNA. South-western Ontario represents a high level of genotypic diversity (pi) due to the presence of two divergent lineages. The geographic distribution of these lineages are interpreted as reflecting post-glacial recolonization dynamics from separate, isolated refugia during the late Pleistocene that have come into secondary contact in SW Ontario. The phylogenetic placement of haplotypes from the range of P. crucifer bartramiana (Florida and South Carolina) does not allow for monophyly of P. crucifer crucifer, and therefore the bartramiana subspecies designation does not reflect a separate evolutionary lineage. (C) 2002 Elsevier Science (USA). All rights reserved.