The complete mitochondrial genome of a walnut weevil, Alcidodes juglans Chao (Coleoptera: Curculionidae)

Abstract

The walnut weevil, Alcidodes juglans Chao (Coleoptera: Curculionidae), is an important agricultural pest and distributed widely in China. The complete mitochondrial genome of A. juglans is 15,638 bp long, and consists of 13 protein-coding genes (PCGs), two ribosomal RNA genes, 21 transfer RNA (tRNA) genes and a putative control region (GenBank accession No. MH819192). The trnI gene has not been observed in the A. juglans mitogenome. The nucleotide composition is significantly biased (A, G, C, and T was 38.35%, 10.02%, 14.96%, and 36.67%, respectively) with A + T contents of 75.02%. All of the 21 tRNAs have the typical cloverleaf structure, with an exception for trnS₁ (AGN). All PCGs are initiated by ATN codons, except for cox1 with AAT instead. Ten PCGs use a common stop codon of TAA or TAG, whereas the remaining three were terminated with a single T. The phylogenetic relationships based on neighbour-joining method showed that A. juglans is closely related to Naupactus xanthographus, which is in accordance with the traditional morphological classification.

Keywords:

• Alcidodes juglans Chao
• walnut weevil
• mitochondrial genome

Disclosure statement

The authors report no conflicts of interests. The authors alone are responsible for the content and writing of the paper.

Additional information

Funding

This study was supported in part by the Special Funding of Guiyang Science and Technology Bureau and Guiyang University (GYU-KYZ-2018-02-08), the Training Program for High-level Innovative Talents of Guizhou Province (20164020), the Natural Science Foundation of Guizhou Educational Committee (2014277), the Program for First-class Discipline Construction in Guizhou Province (201785), and the Engineering Research Center of Pest Ecological Management in Guizhou Province (1491).