Journal of Tropical Oceanography ›› 2010, Vol. 29 ›› Issue (6): 71-78.doi: 10.11978/j.issn.1009-5470.2010.06.071cstr: 32234.14.j.issn.1009-5470.2010.06.071

• Marine biology • Previous Articles     Next Articles

Characterization of mitochondrial control region sequence of Psettodes erumei and phylogenetic analysis of Pleuronectiformes

ZHANG Yan-chun1, KONG Xiao-yu2, WANG Zhong-ming2   

  1. 1. The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, China;  2. Key Labo-ratory of Marine Bio-resources Sustainable Utilization, South China Sea Institute of Oceanology, CAS, Guangzhou 510301, China
  • Received:2009-01-23 Revised:2009-05-27 Online:2010-12-15 Published:2010-12-15
  • Contact: 孔晓瑜。 E-mail:xykong@scsio.ac.cn
  • About author:张艳春(1984—), 女, 吉林省吉林市人, 硕士, 主要从事鱼类分子生物研究。E-mail: zhangyc_601@yahoo.com.cn
  • Supported by:

    国家自然科学基金项目(30870283)

Abstract:

Complete control region (CR) of Psettodes erumei mitochondrial genome was determined. Its size is 1,601 bp in length, with a 56 bp tandem repeat at 5’ end and a 8 bp one at 3’ end. Based on the alignment of CR sequences in this species and seven other flatfishes, three domains (the termination associated sequence domain, TAS; the central conserved domains, CSB-F, CSB-E, CSB-D and the conserved sequence block domains, CSB-1, CSB-2, CSB-3) and a Poly-T tract are identified. The difference of base composition of complete CR sequences is greater than that of CR sequence without repeated regions among eight flatfishes, and the variation coefficient of the former is about twice of the latter, which is mainly due to the het-erogenicity as length, base composition and copy numbers of repeated regions. With Carangoides armatus as the outgroup, the molecular phylogenetic relationship of 12 flatfishes was analyzed using the ML and BI methods. The results showed that P. erumei is the most primitive species among the flatfishes. Soleoidei and Pleuronectoidei are clustered into one clade, and then Psettodoidei merges to it. These results are consistent with that based on the morphological analyses.

Key words: mitochondrial DNA, control region, Psettodes erumei, phylogenesis, Pleuronectiformes