论文
论文标题: Comparative Mitogenome Analyses Uncover Mitogenome Features and Phylogenetic Implications of the Parrotfishes (Perciformes: Scaridae)
作者: Gao, Jiaxin; Li, Chunhou; Yu, Dan; Wang, Teng; Lin, Lin; Xiao, Yayuan; Wu, Peng; Liu, Yong
出版刊物: BIOLOGY-BASEL
出版日期: MAR
出版年份: 2023
卷/期:
DOI: 10.3390/biology12030410
论文摘要: Simple Summary Parrotfishes are among the most colorful and diverse inhabitants of the coral reefs and sea grass beds and are ecologically important in these habitats. Here, we presented the complete mitogenome sequences from twelve parrotfish species and conducted comparative analysis of mitogenome features among the seven published species for the first time. The comparative analysis revealed both the conserved and unique characteristics of parrotfish mitogenomes. The mitogenome structure, organization, gene overlaps, putative secondary structures of transfer RNAs, and codon usage were relatively conserved among all the analyzed species. However, the base composition and the intergenic spacers varied largely among species. All of the protein-coding genes were under purifying selection. Phylogenetic analysis revealed that the parrotfishes could be divided into two clades with distinct ecological adaptations. Early divergence of these two clades was probably related to the expansion of sea grass habitat, and later diversifications were likely associated with the geomorphology alternation since the closing of the Tethys Ocean. This work offered fundamental materials for further studies on the evolution and conservation of parrotfishes. In order to investigate the molecular evolution of mitogenomes among the family Scaridae, the complete mitogenome sequences of twelve parrotfish species were determined and compared with those of seven other parrotfish species. The comparative analysis revealed that the general features and organization of the mitogenome were similar among the 19 parrotfish species. The base composition was similar among the parrotfishes, with the exception of the genus Calotomus, which exhibited an unusual negative AT skew in the whole mitogenome. The PCGs showed similar codon usage, and all of them underwent a strong purifying selection. The gene rearrangement typical of the parrotfishes was detected, with the tRNA(Met) inserted between the tRNA(Ile) and tRNA(Gln), and the tRNA(Gln) was followed by a putative tRNA(Met) pseudogene. The parrotfish mitogenomes displayed conserved gene overlaps and secondary structure in most tRNA genes, while the non-coding intergenic spacers varied among species. Phylogenetic analysis based on the thirteen PCGs and two rRNAs strongly supported the hypothesis that the parrotfishes could be subdivided into two clades with distinct ecological adaptations. The early divergence of the sea grass and coral reef clades occurred in the late Oligocene, probably related to the expansion of sea grass habitat. Later diversification within the coral reef clade could be dated back to the Miocene, likely associated with the geomorphology alternation since the closing of the Tethys Ocean. This work provided fundamental molecular data that will be useful for species identification, conservation, and further studies on the evolution of parrotfishes.
== 实验室与学会 ==
  • == 实验室与学会 ==
  • 淡水生态与生物技术国家重点实验室
  • 中国科学院藻类生物学重点实验室
  • 农业部淡水养殖病害防治重点实验室
  • 武汉白暨豚保护基金会
  • 湖北省海洋湖沼学会
  • 中国动物学会原生动物学分会
  • 中国动物学会斑马鱼分会
  • 湖北省暨武汉动物学会
  • 中国水产学会鱼病学专业委员会
  • 中国鱼类学会
== 平台建设 ==
  • == 平台建设 ==
  • “一带一路”海域赤潮数据库
  • 国家水生生物种质资源库
  • 国家斑马鱼资源中心
  • 中国科学院淡水藻种库
  • 中国科学院武汉生命科学大型仪器区域中心
  • 湿地生态系统观测研究野外站联盟
  • 中国科学院水生生物研究所分析测试中心
  • 中国科学院超级计算武汉分中心
  • 水生生物博物馆
== 相关网站推荐 ==
  • == 相关网站推荐 ==
  • 中国科学院
  • 农业农村部
  • 科学技术部
  • 生态环境部
  • 国家自然科学基金委员会
  • 中国科学院武汉分院
  • 湖北省科学技术厅
  • 湖北省生态环境厅
  • 湖北省农业农村厅