Global Rate Variation in Bony Vertebrates.
Global Rate Variation in Bony Vertebrates.
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DOI：
10.1093/gbe/evy125
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发表时间：
2018-07-01
影响因子：
3.3
通讯作者：
Takezaki N
中科院分区：
文献类型：
--
作者：
Takezaki N
本研究调查了长期的替代率的差异，使用三个校准点，分歧之间的lobe-finned脊椎动物和射线鳍鱼，哺乳动物和蜥脚类，和之间的全骨类（雀鳝和弓鳍）和硬骨鱼与25个脊椎动物的625个基因的氨基酸序列数据。结果表明，在哺乳动物与蜥脚类动物分化之前，叶鳍类脊椎动物的茎枝中的替换率比哺乳动物高2 ~ 3倍。在干分支的辐鳍鱼之前的全骨类，硬骨鱼类的分歧率也比全骨类率高出几倍，而它是类似于或稍慢于硬骨鱼类率。腔棘鱼和肺鱼与四足动物的系统发育关系因分歧间隔时间短而难以确定。考虑到腔棘鱼和肺鱼在主干分支中的高比例，估计它们从主干分支中分化出来的时间分别为408-427 Ma和399-414 Ma，间隔为9-13 Myr。与外部校准的哺乳动物sauropsid分裂，估计的时间内的真兽目哺乳动物的顺序分歧往往是小于以前的研究中使用的校准点内的谱系，更深的分歧之前的古近纪边界和浅的边界后。与此相反，鸟类内部的估计时间比以前的研究更大，与鸡形目和雁形目之间的分歧为180 Ma，鸡形目和Neoaves之间的分歧为110 Ma。
This study investigated long-term substitution rate differences using three calibration points, divergences between lobe-finned vertebrates and ray-finned fish, between mammals and sauropsids, and between holosteans (gar and bowfin) and teleost fish with amino acid sequence data of 625 genes for 25 bony vertebrates. The result showed that the substitution rate was two to three times higher in the stem branches of lobe-finned vertebrates before the mammal-sauropsid divergence than in amniotes. The rate in the stem branch of ray-finned fish before the holostean-teleost fish divergence was also a few times higher than the holostean rate, whereas it was similar to or somewhat slower than the teleost fish rate. The phylogenetic relationship of coelacanth and lungfish with tetrapod was difficult to determine because of the short interval of the divergences. Considering the high rate in the stem branches, the divergences of coelacanth and lungfish from the stem branch were estimated as 408–427 Ma and 399–414 Ma, respectively, with the interval of 9–13 Myr. With the external calibration of the mammal-sauropsid split, the estimated times for ordinal divergences within eutherian mammals tend to be smaller than those in previous studies that used the calibration points within the lineage, with deeper divergences before the Cretaceous–Paleogene boundary and shallower ones after the boundary. In contrast the estimated times within birds were larger than those of previous studies, with the divergence between Galliformes and Anseriformes ∼80 Ma and that between Galloanserae and Neoaves 110 Ma.
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影响因子：
64.8
作者：
通讯作者：
--
影响因子：
5.4
作者：
Brown JW;Rest JS;García-Moreno J;Sorenson MD;Mindell DP
通讯作者：
Mindell DP
影响因子：
56.9
作者：
Asher, RJ;Meng, J;Novacek, MJ
通讯作者：
Novacek, MJ
影响因子：
10.7
作者：
Battistuzzi, Fabia U.;Billing-Ross, Paul;Kumar, Sudhir
通讯作者：
Kumar, Sudhir
DOI：
10.1073/pnas.95.21.12386
发表时间：
1998-10-13
影响因子：
11.1
作者：
Bromham, L;Rambaut, A;Penny, D
通讯作者：
Penny, D