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首页> 外文期刊>Genomics >Complete mtDNA genome of Otus sunia (Aves, Strigidae) and the relaxation of selective constrains on Strigiformes mtDNA following evolution
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Complete mtDNA genome of Otus sunia (Aves, Strigidae) and the relaxation of selective constrains on Strigiformes mtDNA following evolution

机译：Otus Sunia（Aves，Strigidae）的完全MTDNA基因组，以及在演化之后的Strigiformes MTDNA上的选择性约束的放松

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Most of owls are nocturnal raptor and usually use their soft and fluffy feathers to flight silently to catch prey while other diurnal raptors prefer fierce attack and swift flight. For energy cost of these different hunting strategies can be greatly different, we speculate that mitochondrial gene of owls may undergo a different evolution pattern following raptors evolution. To test our hypothesis, we sequenced the mtDNA genome of Otus sunia and calculated the ratio of nonsynonymous to synonymous nucleotide substitutions (ω, Ka/Ks, dN/dS) of raptors. The mtDNA genome of O. sunia was 17,609?bp in length, containing 13 PCGs, 2 ribosomal RNAs, 22 transfer RNAs and a control region. Secondly structure of tRNAs and rRNAs were predicted and conserved sequence blocks (CSBs) on control region were identified. The Bayesian inference tree and maximum likelihood tree based on 13 PCGs and 2 rRNAs suggested the owls were related to other raptors. Finally, calculation of ω-values of each owls and other raptors mtDNA PCGs indicated that owls accumulated more nonsynonymous nucleotide substitutions relative to synonymous substitutions compared to other raptors. For mtDNA PCGs associated with energy metabolism, this finding may reveal the degeneration of flight abilities of owls.
机译：大多数猫头鹰是夜间猛禽，通常使用他们的柔软和蓬松的羽毛来静静地捕捉猎物，而其他昼夜猛龙队更喜欢激烈的攻击和快速航班。对于这些不同的狩猎策略的能源成本可以大不相同，我们推测猛禽演变后猫头鹰的线粒体基因可能会发生不同的演化模式。为了测试我们的假设，我们测序了Otus Sunia的MTDNA基因组，并计算了猛龙队的二型核苷酸取代（ω，ka / ks，dn / ds）的比例。 O. Sunia的MTDNA基因组长度为17,609磅，含有13pcgs，2个核糖体RNA，22转移RNA和对照区域。其次，预测了TrNA和RRNA的结构，并且鉴定了对照区域的保守序列块（CSB）。贝叶斯推理树和基于13个PCG和2 RRNA的最大似然树建议猫头鹰与其他猛禽有关。最后，计算每个猫头鹰和其他猛禽MTDNA PCG的ω-值表明，与其他猛禽相比，猫头鹰相对于同义替换累积了更多的非纯核苷酸取代。对于与能量新陈代谢相关的MTDNA PCG，这一发现可能揭示了猫头鹰的飞行能力退化。

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