The complete mitochondrial genome of the freshwater crab Longpotamon kenliense (Decapoda, Brachyura, Potamidae) with phylogenetic consideration

Abstract

Abstract The authors herein report for the first time the complete sequence of the mitochondrial genome of Longpotamon kenliense. The results showed that the mitochondrial genome of L. kenliense is 18,499 bp in length, shares 37 genes and 1 control region with the typical metazoan mitochondrial genome, and has a strong A + T bias (74.48%), i.e., a characteristic of the metazoan mitochondrial genome. In addition, the authors used the 13 protein-coding genes from the mitochondrial genomes of L. kenliense and 67 other species of Brachyura available from the NCBI to estimate divergence times. The divergence time of L. kenliense was 14.39 Ma, which is close to the divergence times of L. xiushuiense and L. yangtsekiense, but later than that of Sinopotamon yaanense. The results indicate that the genera Sinopotamon and Longpotamon are closely related and that the genus Sinopotamon has a longer history, which may have been caused by geological events.