2025-10-10 中国科学院(CAS)
Web要約 の発言:
<関連情報>
- https://english.cas.cn/newsroom/research_news/earth/202510/t20251010_1089005.shtml
- https://www.cell.com/iscience/fulltext/S2589-0042(25)01875-9
カワゲラの進化史の再構築:系統学的知見と時間的ダイナミクス Reconstructing the evolutionary history of stoneflies: Phylogenetic insights and temporal dynamics
Yehao Wang ∙ Xiao Yang ∙ Michael S. Engel ∙ Qing-Bo Huo ∙ Yu-Zhou Du ∙ Chenyang Cai
iScience Published:September 19, 2025
DOI:https://doi.org/10.1016/j.isci.2025.113614
Graphical abstract
Highlights
- Accounting for site compositional heterogeneity improves the robustness of the Plecoptera phylogeny
- Comprehensive analysis of mitochondrial genomes across all 17 Plecoptera families
- Scopuridae is identified as the earliest-diverging lineage within Euholognatha
- Taeniopterygidae and Leuctridae form a sister group, the second divergence in Euholognatha
Summary
Stoneflies (order Plecoptera), one of the earliest winged insects, are ecologically vital as freshwater bioindicators. Despite their ecological and evolutionary significance, a robust phylogeny for stoneflies has remained elusive. Here, we analyzed mitogenomes from 97 species representing all 17 families, employing site-heterogeneous models to reconstruct a comprehensive phylogeny of global Plecoptera. Our results provide several key insights: 1) Scopuridae is the earliest diverging lineage within Euholognatha; 2) Taeniopterygidae and Leuctridae form sister groups, representing the second diverging clade within Euholognatha; 3) Capniidae is resolved as the sister group to Nemouridae + Notonemouridae; and 4) the phylogenetic relationships within Systellognatha are resolved. Furthermore, by integrating palaeontological and chronostratigraphic data, we selected well-vetted fossil calibrations to reconstruct a temporal framework for Plecoptera evolution. Our study identifies key periods in Plecoptera’s early divergence and the origins of extant stonefly families, establishing a foundation for future research into their biogeography, morphology, and behavioral evolution.
