Deep biogeographical history and cytonuclear discordance in the black-tailed brush lizard
Deep biogeographical history and cytonuclear discordance in the black-tailed brush lizard
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黑尾刷蜥的深层生物地理学历史和细胞核不一致
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
R. Murphy
中科院分区：
文献类型：
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作者：
J. Lindell;F. M. L. Cruz;R. Murphy
分子工具帮助我们推断历史事件，如地理分隔、扩散、基因流动和物种形成。然而，我们的推断不可避免地与我们用来推断历史的人物的性质有关。例如，线粒体DNA（mtDNA）和核DNA（非重组母系与重组双亲遗传）遗传模式的差异可能导致我们提出不同的种内历史。墨西哥西北部下加利福尼亚的半岛，一个受复杂地质历史影响的地区，包括临时航道，允许评估这些字符类型之间的差异。我们对1966 bp的mtDNA进行了测序，以重建来自整个半岛样本的黑尾龙（黑尾灌木蜥蜴）的谱系历史。系谱揭示了几个深刻的分歧，与半岛中部，洛雷托和好望角地区的临时vicariance事件，以及一个主要的分裂整个地峡的拉巴斯，可能是由于晚中新世海道。结果支持一个新兴的图片的历史地理学的下加利福尼亚，这表明，关键的vicariance事件比通常认为的要古老。美国的母系家谱。nigricaudus与等位酶的变化形成鲜明对比，这表明线粒体断裂之间的差异很小，与正在进行的基因流动的模式一致。我们解释这种细胞核的不一致关系到该地区的历史地理。
Molecular tools help us deduce historical events such as vicariance, dispersal, gene flow and speciation. However, our inferences are inevitably linked to the nature of the characters that we use to infer history. For example, the difference in inheritance patterns of mitochondrial DNA (mtDNA) and nuclear DNA (non-recombining maternal vs. recombining biparental inheritance) may lead us to propose different intraspecific histories. The peninsula of Baja California of north-western Mexico, a region affected by a complex geological history involving temporary seaways, permits evaluation of differences between these character types. We sequenced 1966 bp of mtDNA to reconstruct the genealogical history of Urosaurus nigricaudus (black-tailed brush lizard) from samples spanning the entire peninsula. The genealogy revealed several deep divergences, congruent with temporary vicariance events in the mid-peninsular, Loreto and Cape regions, as well as a major split across the Isthmus of La Paz, possibly resulting from a late Miocene seaway. The results support an emerging picture of the historical biogeography of Baja California, which suggests that key vicariance events are older than commonly perceived. The maternal genealogy of U. nigricaudus sharply contrasts with variation in allozymes that suggests very little differentiation across mitochondrial breaks, consistent with a pattern of ongoing gene flow. We interpret this cytonuclear discordance in relation to the historical biogeography of the region.
新世界地鼠、公牛和松蛇（Pituophis：蛇蛇科）（跨大陆物种复合体）的分子系统学。
DOI：
10.1006/mpev.1999.0698
发表时间：
2000
期刊：
Molecular phylogenetics and evolution.
影响因子：
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作者：
Rodriguez-Robles,JA;DeJesus-Escobar,JM
通讯作者：
DeJesus-Escobar,JM