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  • Title: Comparative and phylogenomic analyses of mitochondrial genomes in Coccinellidae (Coleoptera: Coccinelloidea).
    Author: Li X, Song N, Zhang H.
    Journal: PeerJ; 2021; 9():e12169. PubMed ID: 34966567.
    Abstract:
    The Coccinellidae are one of the most familiar beetle families, the ladybirds. Despite the great ecological and economic significance, the phylogenetic relationships of Coccinellidae remain poorly understood. One of the reasons is that the sequenced mitogenomes available for this family are very limited. We sequenced complete or nearly complete mitogenomes from seven species of the tribe Coccinellini with next-generation sequencing. All species have the same gene content and gene order as the putatively ancestral insect mitogenome. A large intergenic spacer region (> 890 bp) was found located between trnI and trnQ. The potential for using secondary structures of the large and small ribosomal subunits for phylogenetic reconstruction was predicted. The phylogenetic relationships were explored through comparative analyses across more than 30 coccinellid species. We performed phylogenetic analyses with both concatenation methods (Maximum Likelihood and Bayesian Inference) and multispecies coalescent method (ASTRAL). Phylogenetic results strongly supported the monophyly of Coccinellidae. Within Coccinellidae, the Epilachnini and the Coccinellini including Halyziini were monophyletic, while the Scymnini and Coccidulini were non-monophyletic.
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