title: Complete mitochondrial genome of the soft-shell clam Mya arenaria.
abstract: We have sequenced and characterized the complete mitochondrial genome of the soft-shell clam, Mya arenaria, an important organism for environmental toxicology and aquaculture. Mya arenaria is located in the taxonomic order Myoida, which lacks any member with a completely annotated mitogenome. The M. arenaria mitochondrial genome is 17 947 bp in length. Like most marine bivalves, the circular mitogenome codes entirely on the heavy strand, with no introns. As with other bivalves, the gene order of the mitochondrion is highly rearranged. The mitogenome contains 12 protein-coding genes but ATP8 is missing, consistent with about half of all bivalve genera. Twenty-three tRNAs were identified. Phylogenetic analysis shows that M. arenaria is related most closely with the bivalves Sinonovacula constricta, and Moerella iridescens, of the infraclass Euheterodonta (unassigned). This, along with the close grouping of the phylogenetic trees, confirms a close tie between Myoida and Euheterodonta (unassigned).
authors.affiliation: a Division of Environmental and Biological Sciences , University of Maine at Machias , Machias , ME , USA , and.
authors.forename: John J
authors.initials: JJ
authors.lastname: Wilson
authors.affiliation: a Division of Environmental and Biological Sciences , University of Maine at Machias , Machias , ME , USA , and.
authors.forename: Morgan
authors.initials: M
authors.lastname: Hefner
authors.affiliation: b Molecular, Cellular, & Biomedical Sciences, University of New Hampshire , Durham , NH , USA.
authors.forename: Charles W
authors.initials: CW
authors.lastname: Walker
authors.affiliation: a Division of Environmental and Biological Sciences , University of Maine at Machias , Machias , ME , USA , and.
authors.forename: Shallee T
authors.initials: ST
authors.lastname: Page
mesh_terms: D000818:Animals; D001482:Base Composition; D023061:Gene Order; D020459:Genes, rRNA; D059646:Genome Size; D054629:Genome, Mitochondrial; D008928:Mitochondria / Q000235:genetics*; D049892:Mya / Q000235:genetics*; D010802:Phylogeny; D012343:RNA, Transfer / Q000235:genetics; D017422:Sequence Analysis, DNA / Q000379:methods*
chemical_list: D012343:RNA, Transfer
keywords: Bivalvia control region, mitogenome, mollusca, phylogeny