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Complete Mitochondrial Genome of the South American Fur Seal Arctocephalus australis (Carnivora: Otariidae) and Its Phylogenetic Implications

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Abstract

The South American fur seal, Arctocephalus australis, is a common Otariidae species, and it is widely distributed on the Atlantic and Pacific rocky coasts and off-shore islands of South America. Despite information about genetic characteristics of some fur seals had been published, the genetic information of A. australis is limit and there is still no its complete mitochondrial genome report. In present study, the complete mitochondrial genome of A. australis was determined and the size of genome is 16,579 bp. It contains 37 genes, including 13 protein-coding genes, 22 tRNA genes and two rRNA genes, and one displacement loop (D-loop) region. The A+T content of the A. australis is 59.2% (A = 33.1%; C = 26.7%; G = 14.1%; T = 26.1%). The PCGs of A. australis (11,394 bp) encode 3,798 amino acids. The 12S rRNA and 16S rRNA mitochondrial genes of A. australis are encoded on the heavy strand, with 960 bp and 1,577 bp, respectively. The tRNA genes range in size from 59 to 76 bp. The origin region of replication on the light strand (OL) is located in 5186–5218 bp. The D-loop region located between the tRNA-Pro gene and tRNA-Phe gene is 1,121 bp in length. Phylogenetic analyses suggest that A. australis belongs to the family Otariidae and has a close relationship with Arctocephalus forsteri.

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Funding

This work was supported by the Foundation of Liaoning Province Department of Ocean and Fisheries (201812/201822) and China Environment and Zoology Protection for Offshore Oil and Ocean Foundation (CF-MEEC/ER/2019-10).

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Authors and Affiliations

  1. Dalian Key Laboratory of Conservation Biology for Endangered Marine Mammals, Liaoning Ocean and Fisheries Science Research Institute, 116023, Dalian, Liaoning, China

    J. Tian, J. Du & J. Han

  2. Dalian Modern Agricultural Production Development Service Center, 116001, Dalian, Liaoning, China

    D. Li

  3. Dalian Sun Asia Tourism Holding Co., Ltd., 116023, Dalian, Liaoning, China

    X. Song

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Correspondence to J. Du.

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Tian, J., Du, J., Han, J. et al. Complete Mitochondrial Genome of the South American Fur Seal Arctocephalus australis (Carnivora: Otariidae) and Its Phylogenetic Implications. Russ J Genet 57, 582–590 (2021). https://doi.org/10.1134/S1022795421050124

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