PDF(Pubmed)
Abstract：
Anagyrus, a genus of Encyrtidae (Hymenoptera, Chalcidoidea), represents a successful group of parasitoid insects that attack various mealybug pests of agricultural and forestry plants. Until now, only 20 complete mitochondrial genomes have been sequenced, including those in this study. To enrich the diversity of mitochondrial genomes in Encyrtidae and to gain insights into their phylogenetic relationships, the mitochondrial genomes of two species of Anagyrus were sequenced, and the mitochondrial genomes of these species were compared and analyzed. Encyrtid mitochondrial genomes exhibit similarities in nucleotide composition, gene organization, and control region patterns. Comparative analysis of protein-coding genes revealed varying molecular evolutionary rates among different genes, with six genes (ATP8, ND2, ND4L, ND6, ND4 and ND5) showing higher rates than others. A phylogenetic analysis based on mitochondrial genome sequences supports the monophyly of Encyrtidae; however, the two subfamilies, Encyrtinae and Tetracneminae, are non-monophyletic. This study provides valuable insights into the phylogenetic relationships within the Encyrtidae and underscores the utility of mitochondrial genomes in the systematics of this family.
摘要：
Anagyrus,encyrtidae的一个属（膜翅目，Chalcidoidea)，代表了一群成功的寄生虫，它们攻击了农业和林业植物的各种mealybug害虫。直到现在,只有20个完整的线粒体基因组被测序，包括这项研究中的那些。为了丰富Encyrtidae线粒体基因组的多样性，并深入了解它们的系统发育关系，对两种Anagyrus的线粒体基因组进行了测序，并对这些物种的线粒体基因组进行了比较和分析。Encyrtid线粒体基因组在核苷酸组成上表现出相似性，基因组织，和控制区域模式。蛋白质编码基因的比较分析揭示了不同基因之间不同的分子进化速率，具有六个基因(ATP8，ND2，ND4L，ND6，ND4和ND5）显示出比其他更高的比率。基于线粒体基因组序列的系统发育分析支持Encyrtidae的单生；但是，这两个子家族，Encyrtinae和Tetracneminae，是非单系的。这项研究提供了有关Encyrtidae内部系统发育关系的宝贵见解，并强调了线粒体基因组在该家族系统学中的实用性。
