Abstract
In this study, we analyzed the complete mitochondrial genome of the spike-topped apple snail, Pomacea diffusa Blume, 1957 (Gastropoda: Ampullariidae). The mitochondrial genome of P. diffusa was 16,373 bp, consisting 13 protein-coding genes, 2 rRNAs, and 22 tRNAs and a non-coding region with a 12 bp repeat unit. There were 29 mitochondrial genes of P. diffusa are distributed on the H-strand, and the other eight tRNA genes encoded on the L-strand. The average AT content of 13 protein-coding genes was 68.7%. A phylogenetic analysis showed that there was a close relationship between P. diffusa and invasive apple snail species, Pomacea canaliculata and Pomacea aff. maculata.
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