The complete mitochondrial genomes of Umalia orientalis and Lyreidus brevifrons: The phylogenetic position of the family Raninidae within Brachyuran crabs

Marine Genomics
Guohui ShiChengwen Song

Abstract

The complete mitochondrial genome (mitogenome) sequences of two primitive crabs, Umalia orientalis and Lyreidus brevifrons (Decapoda: Brachyura: Raninidae) were determined. The mitogenomes of the two species are 15,466 and 16,112bp in length with AT content of 68.0% and 70.6%, respectively. Each genome contains 13 protein-coding genes (PCGs), two rRNA genes, and 22 tRNA genes. The gene arrangement of U. orientalis is the same with those reported for most brachyuran species. Nevertheless, the gene arrangement of L. brevifrons differs from that of U. orientalis in having an additional non-coding region. The newly found non-coding region is located between nad3 and trnA with 641bp in length. Its nucleotide composition and secondary structure are similar to the typical control region. In L. brevifrons, the secondary structures of trnS-AGN and trnI are significantly different from those in U. orientalis and other brachyuran species. The start codon for cox1 is ATG in all reported Eubrachyura mitogenomes, while a common start codon ACG is found in the Podotremata. Phylogenetic analyses for crustacean decapods based on the nucleotide and amino acid of 13 PCGs indicate that Homolidae is more primitive in Brachyura, and Raninidae is a s...Continue Reading

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Citations

Aug 30, 2016·Comparative Biochemistry and Physiology. Part D, Genomics & Proteomics·Guohui ShiChengwen Song
Mar 28, 2016·Mitochondrial DNA. Part B, Resources·Chi Woo LeeSanghee Kim

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