Using genomic data to revisit an early example of reproductive character displacement in Haitian Anolis lizards
Using genomic data to revisit an early example of reproductive character displacement in Haitian Anolis lizards
复制标题
利用基因组数据重新审视海地安乐蜥蜴生殖特征置换的早期例子
DOI：
10.1111/mec.12292
复制
发表时间：
2013
影响因子：
4.9
通讯作者：
R. Glor
中科院分区：
文献类型：
--
作者：
Shea M Lambert;Shea M Lambert;Anthony J. Geneva;D. L. Mahler;R. Glor
生殖特征置换（RCD）的模式-在与生殖隔离相关的特征是更不同的两个物种一起发生的地方比他们发生在隔离-经常归因于强化，在此过程中，自然选择对适应不良的交配事件导致物种或初期物种之间的增强前合子隔离。40年前，在海地干变色蜥蜴的复合体中使用少量等位酶位点描述了RCD的第一个研究，包括分子遗传数据。在这个例子中，Anolis caudalis似乎在其活动范围的北方和南方界限与密切相关的物种接触的区域中经历了可扩展喉扇或垂肉的颜色和图案的分歧。然而，几十年来，这种案例研究在很大程度上被忽视了;同时，对垂肉颜色和图案的地理变化的解释主要集中在适应当地信号环境上。我们重新调查这个例子，使用扩增片段长度多态性（AFLP）基因组扫描，mtDNA序列数据，信息的赘肉表型和GIS数据的环境变化，以测试的假设，RCD产生的海地树干anoles加固。总之，我们的表型和遗传结果与RCD在A范围的南部和北方界限一致。尾侧肌我们评估的证据，加强作为解释RCD在海地树干anoles，考虑替代的解释，并提供建议，为今后的工作之间的关系垂肉变化和形态在海地树干anoles。
The pattern of reproductive character displacement (RCD)—in which traits associated with reproductive isolation are more different where two species occur together than where they occur in isolation—is frequently attributed to reinforcement, a process during which natural selection acting against maladaptive mating events leads to enhanced prezygotic isolation between species or incipient species. One of the first studies of RCD to include molecular genetic data was described 40 years ago in a complex of Haitian trunk anole lizards using a small number of allozyme loci. In this example, Anolis caudalis appears to experience divergence in the color and pattern of an extensible throat fan, or dewlap, in areas of contact with closely related species at the northern and southern limits of its range. However, this case study has been largely overlooked for decades; meanwhile, explanations for geographic variation in dewlap color and pattern have focused primarily on adaptation to local signalling environments. We reinvestigate this example using amplified fragment length polymorphism (AFLP) genome scans, mtDNA sequence data, information on dewlap phenotypes and GIS data on environmental variation to test the hypothesis of RCD generated by reinforcement in Haitian trunk anoles. Together, our phenotypic and genetic results are consistent with RCD at the southern and northern limits of the range of A. caudalis. We evaluate the evidence for reinforcement as the explanation for RCD in Haitian trunk anoles, consider alternative explanations and provide suggestions for future work on the relationship between dewlap variation and speciation in Haitian trunk anoles.
使用多位点基因型数据推断群体结构：连锁位点和相关等位基因频率。
影响因子：
3.3
作者：
Falush,Daniel;Stephens,Matthew;Pritchard,JonathanK
通讯作者：
Pritchard,JonathanK