Ren Jianfeng, Pu Jiafei, Buchinger Tyler, Zhu Xinyun, Baker Cindy, Li Weiming
a College of Fisheries and Life Sciences, Shanghai Ocean University , Shanghai , China .
b Department of Fisheries and Wildlife , Michigan State University , East Lansing , MI , USA , and.
Mitochondrial DNA A DNA Mapp Seq Anal. 2016 Sep;27(5):3560-2. doi: 10.3109/19401736.2015.1074218. Epub 2015 Aug 27.
We report the mitogenomes of the pouched lamprey (Geotria australis) and least brook lamprey (Lampetra aepyptera) in the families Geotriidae and Petromyzontidae, respectively. Both of the mitogenomes contain the 37 typical vertebrate genes. Their gene order and contents are identical to those of previously described lamprey mitogenomes. The mitogenome of G. australis (17 080 bp) is the largest among the 10 reported lamprey mitogenomes, owed to two long noncoding regions. The mitogenome of L. aepyptera is 77 bp longer (16 236 bp) than that of the congeneric European river lamprey L. fluviatilis, a size difference mostly due to different copy numbers of tandem repeats in the noncoding regions. The phylogenetic analysis supports that the pouched lamprey (Geotriidae) diverged earlier from the common ancestor of lampreys than the Petromyzonids, and the placement of the least brook lamprey in the genus Lampetra.
我们分别报告了七鳃鳗科的袋七鳃鳗（Geotria australis）和盲鳗科的小brook盲鳗（Lampetra aepyptera）的线粒体基因组。这两个线粒体基因组均包含37个典型的脊椎动物基因。它们的基因顺序和内容与先前描述的七鳃鳗线粒体基因组相同。袋七鳃鳗的线粒体基因组（17080 bp）是已报道的10个七鳃鳗线粒体基因组中最大的，这归因于两个长的非编码区。小brook盲鳗的线粒体基因组比同属的欧洲河盲鳗L. fluviatilis长77 bp（16236 bp），这种大小差异主要是由于非编码区串联重复的拷贝数不同。系统发育分析支持袋七鳃鳗（七鳃鳗科）比盲鳗科更早地从七鳃鳗的共同祖先中分化出来，以及小brook盲鳗在Lampetra属中的位置。
