Complete mitochondrial genome and phylogenetic analysis of Bombyx mandarina (Lepidoptera: Bombycidae)

Abstract

Bombyx mandarina is generally thought to be the wild ancestor nearest to the domesticated silkworm, B. mori. Here, we sequenced and assembled a complete mitochondrial genome (mitogenome) of B. mandarina. The mitogenome contains 13 protein-coding genes (PCGs), 22 tRNA genes, 2 rRNA genes, and one A + T-rich region. Phylogenetic analysis confirmed that B. mori is more closely related to the Chinese B. mandarina than the Japanese B. mandarina. The new mitogenome provides useful information to further explore the origin and domestication of this species.

Keywords

• wild silkworm
• mitogenome
• phylogenetic relationship