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The complete mitochondrial genome of Pelecanus occidentalis (Pelecaniformes: Pelecanidae) and its phylogenetic analysis.

ABSTRACT: Pelecanus occidentalis, in the order Pelecaniformes, is one of the most abundant and widespread waterbird species in the coast of America. However, the phylogenetic relationships among Pelecaniformes, Suliformes, and Ciconiiformes remain unresolved, particularly in Pelecanidae and Ciconiidae. In this study, we first sequenced and described the complete mitochondrial genome and phylogeny of P. occidentalis. The whole genome of P. occidentalis was 17,315 bp in length, and contained 13 protein-coding genes, 21 transfer RNA genes, two ribosome RNA genes, and one non-coding control region. The overall base composition of the mitochondrial DNA was 30.1% for A, 23.7% for T, 31.5% for C, and 14.6% for G, with a GC content of 46.1%. A phylogenetic tree confirmed that P. occidentalis (Pelecaniformes) was sister to C. boyciana (Ciconiiformes), and Ardeidae and Threskiornithidae were both monophyletic group. This information will be useful in the current understanding of the phylogeny and evolution of Pelecaniformes.

SUBMITTER: Huang T

PROVIDER: S-EPMC7800924 | biostudies-literature |

REPOSITORIES: biostudies-literature

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