The phylogeny of Ephemeroptera in Pterygota revealed by the mitochondrial genome of Siphluriscus chinensis (Hexapoda: Insecta).
The mayfly species Siphluriscus chinensis (Siphluriscidae) has valuable structures useful for phylogeny reconstruction, given its putative basal position within the Ephemeroptera. Here its nearly complete mitochondrial genome is sequenced. We built phylogenetic trees through multiple analytical strategies with some other insect mitogenomes. Structurally, the obtained mitochondrial genome of S. chinensis is 16,616 bp in length,(1) containing 37 genes and an extra trnK-like (trnK2 (AAA)) gene. The 12 PCGs start with typical ATN codons, except the nad1 gene which starts with an unnormalized TTG. Like other known mayfly mitogenomes, the strand bias has negative AT-skew and negative GC-skew. Phylogenetically, our topologies suggest that Odonata is the basally diverged clade in Pterygota; Ephemeroptera is the sister group of the Neoptera; and S. chinensis is indeed the most basal mayfly branch.
The Key Laboratory of Jiangsu Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China; College of Life Sciences, East China Normal University, Shanghai 200241, China.
Dan
D
Li
The Key Laboratory of Jiangsu Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China.
Jia-Chang
JC
Qin
The Key Laboratory of Jiangsu Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China. Electronic address: zhouchangfa@njnu.edu.cn.
Chang-Fa
CF
Zhou
D000818:Animals; D003062:Codon; D017344:Genes, Insect; D049750:Genome, Insect; D054629:Genome, Mitochondrial; D019476:Insect Proteins / Q000235:genetics; D007313:Insecta / Q000145:classification / Q000235:genetics*; D010802:Phylogeny; D012343:RNA, Transfer
D003062:Codon; D019476:Insect Proteins; D012343:RNA, Transfer
China; Ephemeroptera; Insecta; Mitochondrial genome; Phylogeny