Kim Keun-Yong, Lee Sang Yoon, Bang In-Chul, Nam Yoon Kwon
Department of Aquaculture, Pukyong National University, Busan, South Korea.
Mitochondrial DNA. 2008 Oct;19(5):438-45. doi: 10.1080/19401730802449188.
Iksookimia choii (Teleostei; Cypriniformes; Cobitidae) is an endangered freshwater fish species because of anthropogenic pressures around its natural habitats. We present the complete mitogenome sequence of L. choii to provide baseline data for use in the development of conservation plans and captive breeding programs. The total size, gene content and arrangement, and cloverleaf secondary structures of transfer RNA genes of I. choii mitogenome were highly homogeneous to previously known vertebrate mitogenomes. Phylogenetic analysis using nucleotide sequences of protein-coding and transfer RNA genes reflected the taxonomic clustering in the familial levels among species of the superfamily Cobitoidea. I. choii, which was recently transferred to the newly erected genus Iksookimia from Cobitis, was phylogenetically affiliated to one of two Cobitis species with strong statistical supports, indicating its taxonomically unstable status.
长吻异鱊（硬骨鱼纲；鲤形目；鳅科）是一种濒危淡水鱼类，因其自然栖息地周围受到人为压力。我们展示了长吻异鱊的完整线粒体基因组序列，为制定保护计划和圈养繁殖计划提供基础数据。长吻异鱊线粒体基因组的总大小、基因内容和排列以及转运RNA基因的三叶草二级结构与先前已知的脊椎动物线粒体基因组高度同源。使用蛋白质编码和转运RNA基因的核苷酸序列进行的系统发育分析反映了鳅超科物种在科级水平上的分类聚类。长吻异鱊最近从鳅属转移到新建立的异鱊属，在系统发育上与两个鳅属物种之一有很强的统计支持，表明其分类地位不稳定。
