Complete mitochondrial DNA sequence and phylogenetic analysis of Zhikong scallop Chlamys farreri (Bivalvia: Pectinidae)

Kefeng Xu, Manami Kanno, Hong Yu, Qi Li, Akihiro Kijima

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

The complete mitochondrial genome of Zhikong scallop Chlamys farreri is 21,695 bp in length and contains 12 protein-coding genes (the atp8 gene is absent, as in most bivalves), 2 ribosomal RNA genes, and 22 transfer RNA genes. The heavy strand has an overall A?T content of 58.7%. GC and AT skews for the mt genome of C. farreri are 0.337 and -0.184, respectively, indicating the nucleotide bias against C and A. The mitochondrial gene order of C. farreri differs drastically from the scallops Argopecten irradians, Mimachlamys nobilis and Placopecten magellanicus, which belong to the same family Pectinidae. 6623 bp non-coding nucleotides exist intergenically in the mitogenome of C. farreri, with a large continuous sequence (4763 bp) between tRNAVal and tRNAAsn. Two repeat families are found in the large continuous sequence, which seems to be a common feature of scallops. Phylogenetic analysis based on 12 concatenated amino acid sequences of protein-coding genes supports the monophyly of Pectinidae and paraphyletic Pteriomorphia with respect to Heteroconchia.

Original languageEnglish
Pages (from-to)3067-3074
Number of pages8
JournalMolecular Biology Reports
Volume38
Issue number5
DOIs
Publication statusPublished - 2011 Jun 1

Keywords

  • Chlamys farreri
  • Complete mitochondrial genome
  • Pectinidae
  • Repeated sequences

ASJC Scopus subject areas

  • Molecular Biology
  • Genetics

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