| Abstract: | The complete mitochondrial genome of Acanthacorydalis orientalis(McLachlan)was determined and analyzed(GenBank accession number:KF840564).This paper represents the first mitochondrial(mt) genome of the dobsonfly genus Acanthacorydalis.The mt genome is a typical circular DNA of 15 753 bp composed of 37 genes with an A+T content of 76.7%.It has an ancestral gene arrangement of the insect mt genomes.Eleven of the 13 PCGs start with codon ATT and ATG,while several exceptions such as ATA and TTG respectively for atpS and nad\ are also present.Five protein-coding genes end with a single T,while others have a termination codon of TAA or TAG.Most tRNAs are folded into the typical clover-leaf structure except for the trnS 1 whose dihydrouridine arm was a simple loop.The secondary structure of rrnl consists of five structural domains and 50 helices,while the rrns includes three domains and 34 helices.The control region has a stretches of Ts with a length of 22 bp but lacks obvious tandem repeat region.Both Bayesian inference and maximum likelihood(ML) analyses,based on all 13 protein-coding genes and two rRNA genes of the mt genomes,confirm the monophyly of Corydalinae and suggest that Acanthacorydalis,together with Corydalus,which is an endemic dobsonfly genus from the New World,belong to a monophyletic lineage. |
