Institute of Pathogens and Vectors, Yunnan Provincial Key Laboratory for Zoonosis Control and Prevention, Dali University, Dali, 671000, China.
School of Foreign Languages, Dali University, Dali, 671000, China.
Exp Appl Acarol. 2023 Aug;90(3-4):301-316. doi: 10.1007/s10493-023-00802-6. Epub 2023 Jun 22.
Some mites of the family Haemogamasidae can transmit a variety of zoonotic diseases and have important public health and safety implications. Currently, however, little attention has been paid to molecular data of Haemogamasidae species, limiting our understanding of their evolutionary and phylogenetic relationships. In this study, the complete mitochondrial genome of Eulaelaps huzhuensis was determined for the first time, and its genomic information was analyzed in detail. The mitochondrial genome of E. huzhuensis is 14,872 bp in length with 37 genes and two control regions. The base composition showed a distinct AT preference. Twelve protein-coding genes have a typical ATN as the start codon, and three protein-coding genes have incomplete stop codons. During the folding of tRNA genes, a total of 30 mismatches occurred, and three tRNA genes had an atypical cloverleaf secondary structure. The order of the E. huzhuensis mitochondrial genome arrangement is a new type of rearrangement in Mesostigmata. The phylogenetic analysis confirmed that the family Haemogamasidae is a monophyletic branch and does not belong to a subfamily of the Laelapidae. Our results lay the foundation for subsequent studies on the phylogeny and evolutionary history of the family Haemogamasidae.
有些血革螨科螨可以传播多种人畜共患疾病，对公共卫生和安全具有重要意义。然而，目前人们对血革螨科物种的分子数据关注甚少，这限制了我们对其进化和系统发育关系的理解。本研究首次测定了中华血革螨的完整线粒体基因组，并对其基因组信息进行了详细分析。中华血革螨的线粒体基因组全长为 14872bp，包含 37 个基因和两个控制区。碱基组成表现出明显的 AT 偏好性。12 个蛋白质编码基因以典型的 ATN 作为起始密码子，3 个蛋白质编码基因具有不完全的终止密码子。在 tRNA 基因的折叠过程中，总共发生了 30 个错配，其中 3 个 tRNA 基因具有非典型的三叶草二级结构。中华血革螨线粒体基因组排列的顺序是 Mesostigmata 中的一种新型重排。系统发育分析证实，血革螨科是一个单系分支，不属于革螨科的一个亚科。我们的研究结果为血革螨科的系统发育和进化历史的后续研究奠定了基础。
