01462nas a2200181   4500008004100000245013100041210006900172260000800241300001000249490000800259520087600267100001901143700001801162700001701180700001801197700001601215856004901231       2008                        eng d00aThe complete mitochondrial genome of Parafronurus youi (Insecta: Ephemeroptera) and phylogenetic position of the Ephemeroptera0 acomplete mitochondrial genome of Parafronurus youi Insecta Ephem  cNov  a18-240 v4243 aThe first complete mitochondrial genome of a mayfly, Parafronurus youi (Arthropoda: Insecta: Pterygota: Ephemeroptera: Heptageniidae), was sequenced using a long PCR-based approach. The genome is a circular molecule of 15,481 bp in length, and encodes the set of 38 genes. Among them, 37 genes are found in other conservative insect mitochondrial genomes, and the 38(th) unique gene is trnM-like (trnM2). The duplication-random loss model can be used to explain one of the translocations at least. The A+T content of the control region is 57%, the lowest proportion detected so far in Hexapoda. Based on the nucleotide dataset and the corresponding amino acid dataset of 12 protein-coding genes, Bayesian inference and maximum likelihood analyses yielded stable support for the relationship of the three basal clades of winged insects as Ephemeroptera+(Odonata+Neoptera).1 aZhang, Jiayong1 aZhou, Changfa1 aGai, Yonghua1 aSong, Daxiang1 aZhou, Kaiya  uhttps://worldodonata.myspecies.info/node/217