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.

SUBMITTER: Xu K 

PROVIDER: S-EPMC7510617 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature