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Despite Diplostomum baeri (Dubois, 1937) being one of the most widely distributed parasites of freshwater fish, there is no complete mitochondrial (mt) genome currently available. The complicated systematics presented by D. baeri has hampered investigations into the species distributions and infective dynamics of the species. Within this study we obtained complete mt genome sequences of D. baeri and assessed its phylogenetic relationship with other species of Digenea. The complete mitochondrial genome of D. baeri is 14,480 bp in length, containing 36 genes in total. The phylogenetic tree resulting from Bayesian inference of concatenated 12 protein coding gene sequences placed D. baeri alongside published mt genomes of Diplostomidae, with the overall taxonomic placement of the genus being a sister lineage of the order Plagiochiida The characterization of further mitochondrial genomes within the family Diplostomidae will help progress phylogenetic and epidemiological investigations as well as providing a framework for the analysis of diagnostic markers to be used in further monitoring of the parasite worldwide. |
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