Multilocus species trees show the recent adaptive radiation of the mimetic heliconius butterflies.
Multilocus species trees show the recent adaptive radiation of the mimetic heliconius butterflies.
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多焦点树木显示了模仿螺旋藻蝴蝶的最新自适应辐射。
DOI：
10.1093/sysbio/syv007
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发表时间：
2015-05
影响因子：
6.5
通讯作者：
Jiggins CD
中科院分区：
文献类型：
--
作者：
Kozak KM;Wahlberg N;Neild AF;Dasmahapatra KK;Mallet J;Jiggins CD
新热带区Heliconiini蝴蝶之间的Müllerian拟态是自然选择的一个很好的例子，与大的大陆尺度辐射的多样化有关。一些驱动拟态环进化的过程可能会在整个组合中产生不一致的系统发育信号，从而对系统学提出挑战。我们使用的数据集的22个线粒体和核标记，从92%的物种在部落中，通过桑格测序和从头组装的短读数据，重新检查的超矩阵和多物种结合的方法，表征冲突的信号模式，并比较各种方法的性能，以反映数据的异质性。尽管大范围的网状信号和标记之间的强烈冲突，几乎相同的拓扑结构是一致的恢复大多数的分析，虽然超矩阵的方法未能反映潜在的变化，在历史上的个别位点。然而，超矩阵代表了一种有用的近似，其中可以容易地并入由短序列表示的多个稀有物种。第一个全面的，时间校准的这一组是用来测试多样化率增加的假设，在过去的23万年的新热带地区的剧烈环境变化，或变化所造成的多样性依赖的影响多样化的速度。我们发现，多样化的速度增加了分支导致目前物种最丰富的属Heliconius，但变化逐渐发生，不能明确归因于一个特定的环境驱动程序。我们的研究提供了全面的比较不同物种的树木重建方法，并提供了一个重要的昆虫辐射在地球上生物多样性最丰富的地区的多样化的见解。
Müllerian mimicry among Neotropical Heliconiini butterflies is an excellent example of natural selection, associated with the diversification of a large continental-scale radiation. Some of the processes driving the evolution of mimicry rings are likely to generate incongruent phylogenetic signals across the assemblage, and thus pose a challenge for systematics. We use a data set of 22 mitochondrial and nuclear markers from 92% of species in the tribe, obtained by Sanger sequencing and de novo assembly of short read data, to re-examine the phylogeny of Heliconiini with both supermatrix and multispecies coalescent approaches, characterize the patterns of conflicting signal, and compare the performance of various methodological approaches to reflect the heterogeneity across the data. Despite the large extent of reticulate signal and strong conflict between markers, nearly identical topologies are consistently recovered by most of the analyses, although the supermatrix approach failed to reflect the underlying variation in the history of individual loci. However, the supermatrix represents a useful approximation where multiple rare species represented by short sequences can be incorporated easily. The first comprehensive, time-calibrated phylogeny of this group is used to test the hypotheses of a diversification rate increase driven by the dramatic environmental changes in the Neotropics over the past 23 myr, or changes caused by diversity-dependent effects on the rate of diversification. We find that the rate of diversification has increased on the branch leading to the presently most species-rich genus Heliconius, but the change occurred gradually and cannot be unequivocally attributed to a specific environmental driver. Our study provides comprehensive comparison of philosophically distinct species tree reconstruction methods and provides insights into the diversification of an important insect radiation in the most biodiverse region of the planet.
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影响因子：
6.6
作者：
Bapst, David W.
通讯作者：
Bapst, David W.
影响因子：
4.9
作者：
Arias, Carlos F.;Salazar, Camilo;Mcmillan, W. Owen
通讯作者：
Mcmillan, W. Owen
影响因子：
6.5
作者：
Bergsten J;Nilsson AN;Ronquist F
通讯作者：
Ronquist F
影响因子：
6.8
作者：
AKAIKE, H
通讯作者：
AKAIKE, H
DOI：
10.1111/j.1095-8312.2007.00830.x
发表时间：
2007-10-01
影响因子：
1.9
作者：
Beltran, Margarita;Jiggins, Chris D.;Mallet, James
通讯作者：
Mallet, James