The complete mitochondrial genome of Cylicocyclus ultrajectinus (Ihle, 1920)

In this study, the mitochondrial genome of Cylicocyclus ultrajectinus (Ihle, 1920) was sequenced for the first time using next-generation sequencing technology, and its compositional characteristics, structure, and phylogenetic relationship with other strongylid nematodes were analyzed by biological software. The results showed that these sequences contained 12 protein-coding genes, 22 tRNA genes, 2 rRNA genes, and 2 non-coding regions, all exhibiting a significant AT bias. Phylogenetic studies showed that C. ultrajectinus formed a distinct branch form other Cylicocyclus nematodes. This study contributes to the mitochondrial genome database of Strongylidae, laying a foundation for genetic variation, molecular classification, and evolutionary studies of strongylid nematodes.