Abstract
The circular mitochondrial genome (mitogenome) of Aleuroglyphus ovatus was sequenced. It was 14,328 bp long, and consisted of 37 coding genes including 13 protein-coding genes, two ribosomal RNA genes, and 22 transfer RNA genes. This is the first description of the complete mitogenome of a species in the Acaridae (Acari: Sarcoptiformes). The mtDNA gene order for A. ovatus is identical to those of Dermatophagoides farinae and D. pteronyssinus, but distinctly different from the mtDNA of other Acari. Most inferred tRNA genes of A. ovatus are extremely truncated (48-62 bp), lack stem-loops on either the T- or D-arm (except the trnK), and are unable to fold into the canonical tRNA cloverleaf structure. The largest non-coding region (378 bp) contained several conserved sequences involved in the regulation of mitogenome replication, including one core sequence (ACAT) associated with termination of the J-strand replication and several hypothetical stem-loop structures. The microsatellite-like (AT)n sequence in the largest non-coding region was observed in two other Astigmata species, but it has not been found in other Acari.
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