title: The mitochondrial genome of the land snail Camaenacicatricosa (Müller, 1774) (Stylommatophora, Camaenidae): the first complete sequence in the family Camaenidae.
abstract: The complete mitochondrial (mt) genome of the snail Camaenacicatricosa (Müller, 1774) has been sequenced and annotated in this study. The entire circular genome is 13,843 bp in size and represents the first camaenid mt genome, with content of 31.9%A, 37.9%T, 13.5%C and 16.7%G. Gene content, codon usage and base organization show similarity to a great extent to the sequenced mt genome from Stylommatophora, whereas, gene order is different from them, especially the positions of tRNA(Cys) , tRNA(Phe) , COII, tRNA(Asp) , tRNA(Gly) , tRNA(His) and tRNA(Trp) . All protein coding genes use standard initiation codons ATN except for COII with GTG as start signal. Conventional stop codons TAA and TAG have been assigned to all protein coding genes. All tRNA genes possess the typical clover leaf structure, but the TψC arm of tRNA(Asp) and dihydrouridine arm of tRNA(Ser(AGN)) only form a simple loop. Shorter intergenic spacers have been found in this mt genome. Phylogenetic study based on protein coding genes shows close relationship of Camaenidae and Bradybaenidae. The presented phylogeny is consistent with the monophyly of Stylommatophora.
authors.affiliation: Key Laboratory of Molluscan Quarantine and Identification of AQSIQ, Fujian Entry-Exit Inspection & Quarantine Bureau, Fuzhou, Fujian 350001, China.
authors.forename: Pei
authors.initials: P
authors.lastname: Wang
authors.affiliation: National Wetland Museum of China, Hangzhou, Zhejiang 310013, China.
authors.forename: Hai-Fan
authors.initials: HF
authors.lastname: Yang
authors.affiliation: Key Laboratory of Molluscan Quarantine and Identification of AQSIQ, Fujian Entry-Exit Inspection & Quarantine Bureau, Fuzhou, Fujian 350001, China.
authors.forename: Wei-Chuan
authors.initials: WC
authors.lastname: Zhou
authors.affiliation: Department of Life Sciences, National University of Kaohsiung, No.700, Kaohsiung University Road, Nan-Tzu District, Kaohsiung 81148, Taiwan.
authors.forename: Chung-Chi
authors.initials: CC
authors.lastname: Hwang
authors.affiliation: College of Life Science and Technology, Xinjiang University, Urumqi, Xinjiang 830046, China.
authors.forename: Wei-Hong
authors.initials: WH
authors.lastname: Zhang
authors.affiliation: Zhejiang Museum of Natural History, Hangzhou, Zhejiang 310014, China.
authors.forename: Zhou-Xing
authors.initials: ZX
authors.lastname: Qian
keywords: Camaenacicatricosa; Camaenidae; Stylommatophora; mitochondrial genome; secondary structure