The mitochondrial genome of the deep-sea tubeworm Paraescarpia echinospica (Siboglinidae, Annelida) and its phylogenetic implications

Yanan Sun; Qianyong Liang; Jin Sun; Yi Yang; Jun Tao; Jinqiang Liang; Dong Feng; Jian-Wen Qiu; Pei-Yuan Qian

doi:10.1080/23802359.2018.1424576

The mitochondrial genome of the deep-sea tubeworm Paraescarpia echinospica (Siboglinidae, Annelida) and its phylogenetic implications

Mitochondrial DNA B Resour. 2018 Jan 18;3(1):131-132. doi: 10.1080/23802359.2018.1424576.

Authors

Yanan Sun¹, Qianyong Liang², Jin Sun¹, Yi Yang¹, Jun Tao², Jinqiang Liang², Dong Feng³, Jian-Wen Qiu⁴, Pei-Yuan Qian¹

Affiliations

¹ Division of Life Science, The Hong Kong University of Science and Technology, Hong Kong, China.
² MLR Key Laboratory of Marine Mineral Resources, Guangzhou Marine Geological Survey, China Geological Survey, Guangzhou, China.
³ CAS Key Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China.
⁴ Department of Biology, Hong Kong Baptist University, Hong Kong, China.

Abstract

Paraescarpia echinospica is a conspicuous annelid living in the cold seeps and hydrothermal vents of the Western Pacific region and relying on their endosymbiont bacteria as a source of energy and organic carbon. We report the complete mitochondrial genome of P. echinospica, which is 15,280 bp in length, containing 13 protein-coding genes, two ribosomal RNA genes, 22 tRNA genes and a putative control region. The overall base composition is AT-biased. The control region contains repeated nucleotide motifs. Phylogenetic analyses of the concatenated mitochondrial genes strongly support a sister relationship of P. echinospica with a clade containing Escarpia and Seepiophila.

Keywords: Paraescarpia echinospica; Tubeworm; deep-sea; mitogenome; next generation sequencing.