Hunan Provincial Key Laboratory of Protein Engineering in Animal Vaccines, College of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, PR China.
GeneCology Research Centre, School of Science and Engineering, University of the Sunshine Coast, Sippy Downs, Queensland 4556, Australia.
Genomics. 2020 Nov;112(6):4924-4933. doi: 10.1016/j.ygeno.2020.09.005. Epub 2020 Sep 6.
We report for the first time the fragmented mitochondrial (mt) genomes of two Pedicinus species: Pedicinus obtusus and Pedicinus badii, and compared them with the lice of humans and chimpanzees. Despite being congeneric, the two monkey lice are distinct from each other in mt karyotype. The variation in mt karyotype between the two Pedicinus lice is the most pronounced among the congeneric species of sucking lice observed to date and is attributable to the opposite directions between them in mt karyotype evolution. Two of the inferred ancestral mt minichromosomes of the higher primate lice merged as one in the macaque louse whereas one of the ancestral minichromosomes split into two in the colobus louse after these two species diverged from their most recent common ancestor. Our results showed that mt genome fragmentation was a two-way process in the higher primate lice, and minichromosome merger was more common than previously thought.
钝皮蝇和巴氏皮蝇的线粒体（mt）基因组片段，并将其与人类和黑猩猩的虱子进行了比较。尽管是同属物种，但这两种猴虱在 mt 染色体组型上彼此不同。在迄今为止观察到的同属吸虱中，两种皮蝇之间 mt 染色体组型的变化最为明显，这归因于 mt 染色体组型进化的相反方向。在猕猴虱中，两种高等灵长类虱的两个推断的祖先 mt 小染色体融合为一个，而在这两个物种从最近的共同祖先分化后，一个祖先小染色体在疣猴虱中分裂为两个。我们的研究结果表明，在高等灵长类虱中，mt 基因组片段化是一个双向过程，小染色体融合比之前认为的更为常见。
