Melo-Ferreira J, Boursot P, Suchentrunk F, Ferrand N, Alves P C
CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, Campus Agrário de Vairão, 4485-661 Vairão, Portugal.
Mol Ecol. 2005 Jul;14(8):2459-64. doi: 10.1111/j.1365-294X.2005.02599.x.
Mitochondrial DNA introgression from Lepus timidus into Lepus granatensis and Lepus europaeus was recently reported in Iberia, although L. timidus presumably retreated from this region at the end of the last ice age. Here we assess the extent of this ancient mtDNA introgression by RFLP analysis of 695 specimens representing the three hare species present in Iberia. The introgressed L. timidus lineage was found in 23 of the 37 populations sampled. It is almost fixed in L. europaeus across its Iberian range in the Pyrenean foothills, and in L. granatensis, which occupies the rest of the peninsula, it is predominant in the north and gradually disappears further south. We also found it in Lepus castroviejoi, a species endemic to Cantabria. Multiple hybridizations and, potentially, a selective advantage for the L. timidus lineage can explain the remarkable taxonomic and geographical range of this mitochondrial introgression.
最近在伊比利亚半岛报道了从草原兔（Lepus timidus）到 Granada 兔（Lepus granatensis）和欧洲兔（Lepus europaeus）的线粒体 DNA 渗入，尽管草原兔可能在上个冰河时代末期从该地区退缩了。在这里，我们通过对代表伊比利亚半岛现存三种野兔的 695 个标本进行 RFLP 分析，评估了这种古老线粒体 DNA 渗入的程度。在采样的 37 个种群中的 23 个中发现了渗入的草原兔谱系。它在比利牛斯山麓伊比利亚范围内的欧洲兔中几乎固定，而在占据半岛其余部分的 Granada 兔中，它在北部占主导地位，并在更南部逐渐消失。我们还在坎塔布里亚特有的 Castroviejo 兔（Lepus castroviejoi）中发现了它。多次杂交以及草原兔谱系可能具有的选择优势可以解释这种线粒体渗入显著的分类学和地理范围。
