Complete mitochondrial genome of a golden orb-web spider Trichonephila clavata (Chelicerata, Arachnida) from South Korea

Eun Hwa Choi; Ui Wook Hwang

doi:10.1080/23802359.2021.1955633

Complete mitochondrial genome of a golden orb-web spider Trichonephila clavata (Chelicerata, Arachnida) from South Korea

Mitochondrial DNA B Resour. 2023 Jul 4;8(7):723-725. doi: 10.1080/23802359.2021.1955633. eCollection 2023.

Authors

Eun Hwa Choi¹, Ui Wook Hwang^{1

2

3}

Affiliations

¹ Department of Biology Education, Teachers College and Institute for Phylogenomics and Evolution, Kyungpook National University, Daegu, South Korea.
² Institute for Korean Herb-Bio Convergence Promotion, Kyungpook National University, Daegu, South Korea.
³ School of Industrial Technology Advances, Kyungpook National University, Daegu, South Korea.

Abstract

The mitochondrial genome of a golden orb-web spider Trichonephila clavata (L. Koch, 1878) from South Korea is determined and characterized in detail, which is the second mitochondrial genome reported from this species: the first was published from the Chinese sample by Pan et al. (2016). It was 14,436 bp in length being composed of 13 protein-coding genes (PCGs), 22 transfer RNA genes, two ribosomal RNA genes, and one control region (CR). It has a base composition of 35.99% for 'A,' 14.88% for 'G,' 9.09% for 'C,' and 40.04% for 'T.' Comparing the South Korean and Chinese mitochondrial genomes, we observed 8% nucleotide sequence differences between their CRs, caused by the different numbers and sorts of possessed tandem repeats, suggesting a promising molecular marker to distinguish South Korean individuals from Chinese ones. The phylogenetic trees using the maximum likelihood (ML) method were reconstructed with nucleotides (without 3rd codon position) and amino acids from 13 PCGs, respectively, which consistently confirmed that T. clavata (Subfamily Nephilinae) from South Korea and China are clustered together, distinctly separated from the other subfamily Araneinae in the monophyletic family Araneidae.

Keywords: Chelicerata; Nephilinae; Trichonephila clavata; mitochondrial genome; phylogeny.

Grants and funding

This research was financially supported by National Institute of Biological Resources, Ministry of Environment, Republic of Korea [granted to U.W.H.; no. NIBR202104202].