title: The complete mitochondrial genome of the dusky shark Carcharhinus obscurus.
abstract: The dusky shark Carcharhinus obscurus is economically important but vulnerable to overharvesting. The complete C. obscurus mitogenome was assembled from approximately 1 million whole genome shotgun sequences using a combination of reference mapping and de novo assembly (mean coverage 59x). This resulted in a 16,706 bp double-stranded circular mitochondrial sequence. Following the consensus vertebrate mtDNA genome, it comprises 13 protein-coding genes, 22 transfer RNAs, two ribosomal RNAs and has 2 non-coding areas. The A + T (56.9%) versus G + C (43.1%) composition confirmed an A + T bias previously noted for sharks. This genome is the first for the speciose Carcharhinus genus and provides a valuable resource for studies of shark molecular systematics, phylogeography, conservation genetics, and stock structure.
authors.affiliation: School of Biological Sciences, The University of Queensland , St. Lucia, QLD 4072 , Australia.
authors.forename: Dean C
authors.initials: DC
authors.lastname: Blower
authors.forename: James P
authors.initials: JP
authors.lastname: Hereward
authors.forename: Jennifer R
authors.initials: JR
authors.lastname: Ovenden
mesh_terms: D000818:Animals; D001482:Base Composition; D004272:DNA, Mitochondrial / Q000235:genetics*; D054629:Genome, Mitochondrial; D011506:Proteins / Q000235:genetics; D012335:RNA, Ribosomal / Q000235:genetics; D012343:RNA, Transfer / Q000235:genetics; D012754:Sharks / Q000235:genetics*
chemical_list: D004272:DNA, Mitochondrial; D011506:Proteins; D012335:RNA, Ribosomal; D012343:RNA, Transfer