Li Yanze, Ru Bingyi, Zhang Yuan, Wan Dongmei
School of Life Sciences, Liaoning University, Liaoning, China.
Mitochondrial DNA B Resour. 2024 Apr 10;9(4):483-487. doi: 10.1080/23802359.2024.2338266. eCollection 2024.
The brown-eared bulbul ( is a medium-sized songbird native to East Asia and characterized by its prominent reddish-brown ear-coverts. Previous studies on it have primarily been from the taxonomic and morphological aspects, with limited research in the realm of molecular biology. In this study, we sequenced and annotated the complete mitochondrial genome of , which was the first reported complete mitogenome of the genus . The mitogenome of is 17,871 bp in length and was predicted to encode 37 typical mitochondrial genes, including 13 protein-coding genes (PCGs), 22 transfer RNA genes (tRNAs), two ribosomal RNA genes (rRNAs). Specifically, this mitogenome contains two D-loop control regions that are of similar length and sequencing pattern. A total of 8 Pycnonotidae and six outgroup taxa were used to determine the phylogenetic placement with two methods: Maximum Likelihood Approximation (IQ-TREE) and Bayesian inference (MrBayes). Our findings reveal that is phylogenetically closely related to . The outcomes are generally consistent with the phylogenetic trees constructed in previous studies. The data gathered from this research provides valuable insights for future genomic investigations into the evolution, ecology, and conservation of this species.
棕耳鹎是一种原产于东亚的中型鸣禽，其显著特征是有突出的红褐色耳羽。此前对它的研究主要集中在分类学和形态学方面，在分子生物学领域的研究有限。在本研究中，我们对棕耳鹎的完整线粒体基因组进行了测序和注释，这是该属首次报道的完整线粒体基因组。棕耳鹎的线粒体基因组长度为17,871 bp，预计编码37个典型的线粒体基因，包括13个蛋白质编码基因（PCGs）、22个转运RNA基因（tRNAs）、两个核糖体RNA基因（rRNAs）。具体而言，该线粒体基因组包含两个长度和测序模式相似的D-loop控制区。总共使用了8种鹎科鸟类和6个外类群分类单元，通过两种方法确定系统发育位置：最大似然近似法（IQ-TREE）和贝叶斯推断法（MrBayes）。我们的研究结果表明，棕耳鹎在系统发育上与[具体物种]密切相关。这些结果总体上与先前研究构建的系统发育树一致。本研究收集的数据为该物种未来在进化、生态和保护方面的基因组研究提供了有价值的见解。
