The complete mitochondrial genome of Brevimulticaecum sinensis (Nematoda: Heterocheilidae), the first representative of the genus Brevimulticaecum.

The complete mitochondrial genome sequence of Brevimulticaecum sinensis was clarified in this study, and this is the first member of the genus Brevimulticaecum ever sequenced for complete mitochondrial genome. The circular mitochondrial genome (13887 bp) of B. sinensis encodes 12 protein-coding genes, 22 transfer RNA genes, 2 ribosomal RNA genes, and 2 non-coding regions, all genes exhibiting a nucleotide composition bias toward AT. Phylogenetic studies showed that B. sinensis and Ortleppascaris sinensis formed a monophyletic group belonging to the family Heterocheilidae. The complete mitochondrial genome sequence of B. sinensis should enrich molecular markers for studying the molecular classification, genetic variation, and phylogenetic studies of the Ascaridida nematodes.