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<p>Pentatomidae stink bugs comprise ecologically diverse lineages, including predatory and phytophagous taxa, yet comparative data on their mitochondrial genome architecture and nuclear mitochondrial DNA segments (NUMTs) remain limited. Here, we report a high-quality mitochondrial genome assembly for the predatory stink bug <i>Eocanthecona furcellata</i> (Asopinae) and conduct comparative analyses with the predatory <i>Arma custos</i> (Asopinae) and the phytophagous <i>Nezara viridula</i> (Pentatominae). The mitochondrial genome of <i>E. furcellata</i> exhibits the typical insect gene complement and conserved organization, including canonical protein-coding genes, rRNAs and tRNAs, with nucleotide composition and codon usage patterns consistent with other pentatomids. We identified a conservative set of high-confidence NUMTs in the <i>E. furcellata</i> nuclear genome and characterized their genomic distribution and flanking gene contexts. Transcriptomic comparisons between early instar nymphs and adults of <i>E. furcellata</i> revealed stage-associated differences in the expression of mitochondrial function-related genes. Comparative analyses across <i>E. furcellata</i>, <i>A. custos</i>, and <i>N. viridula</i> suggested broadly conserved mitochondrial genome organization, alongside lineage-associated variation in nucleotide composition, NUMT distribution, and curated orthologous genes involved in core mitochondrial energy metabolism. Together, this study provides foundational genomic resources and a comparative framework for understanding mitochondrial genome evolution and NUMT dynamics in Pentatomidae. Future studies incorporating congeneric species and phylogenetically matched sampling designs will be necessary to disentangle lineage effects from ecological divergence.</p>

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Comparative mitochondrial genome architecture and nuclear mitochondrial DNA (NUMT) landscapes in stink bugs of the family Pentatomidae

  • 期刊论文

  • 发表日期：

    2026年5月7日

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  • He Wu,
  • Yunbin Li,
  • Rentao Liao,
  • Jiaxin Zhang,
  • Youshou Gao,
  • Gang Chen,
  • Wei Ren,
  • Zichao Mao,
  • Zhengjie Liu

摘要

Pentatomidae stink bugs comprise ecologically diverse lineages, including predatory and phytophagous taxa, yet comparative data on their mitochondrial genome architecture and nuclear mitochondrial DNA segments (NUMTs) remain limited. Here, we report a high-quality mitochondrial genome assembly for the predatory stink bug Eocanthecona furcellata (Asopinae) and conduct comparative analyses with the predatory Arma custos (Asopinae) and the phytophagous Nezara viridula (Pentatominae). The mitochondrial genome of E. furcellata exhibits the typical insect gene complement and conserved organization, including canonical protein-coding genes, rRNAs and tRNAs, with nucleotide composition and codon usage patterns consistent with other pentatomids. We identified a conservative set of high-confidence NUMTs in the E. furcellata nuclear genome and characterized their genomic distribution and flanking gene contexts. Transcriptomic comparisons between early instar nymphs and adults of E. furcellata revealed stage-associated differences in the expression of mitochondrial function-related genes. Comparative analyses across E. furcellata, A. custos, and N. viridula suggested broadly conserved mitochondrial genome organization, alongside lineage-associated variation in nucleotide composition, NUMT distribution, and curated orthologous genes involved in core mitochondrial energy metabolism. Together, this study provides foundational genomic resources and a comparative framework for understanding mitochondrial genome evolution and NUMT dynamics in Pentatomidae. Future studies incorporating congeneric species and phylogenetically matched sampling designs will be necessary to disentangle lineage effects from ecological divergence.