首页|Evolutionary timescale of chalcidoid wasps inferred from over one hundred mitochondrial genomes

Evolutionary timescale of chalcidoid wasps inferred from over one hundred mitochondrial genomes

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Chalcidoidea is one of the most biologically diverse groups among Hymenoptera.Members are characterized by extraordinary parasitic lifestyles and extensive host ranges,among which several species attack plants or serve as pollinators.However,higher-level chalcidoid relationships remain controversial.Here,we performed mitochondrial phylogenomic analyses for major clades(18 out of 25 families)of Chalcidoidea based on 139 mitochondrial genomes.The compositional heterogeneity and conflicting backbone relationships in Chalcidoidea were assessed using various datasets and tree inferences.Our phylogenetic results supported the monophyly of 16 families and polyphyly of Aphelinidae and Pteromalidae.Our preferred topology recovered the relationship(Mymaridae+(Signiphoridae+Leucospidae)+(Chalcididae+((Perilampidae+Eucharitidae)+remaining Chalcidoidea)))).The monophyly of Agaonidae and Sycophaginae was rejected,while the gall-associated((Megastigmidae+Ormyridae)+(Ormocerinae+Eurytomidae))relationship was supported in most results.A six-gene inversion may be a synapomorphy for most families,whereas other derived gene orders may introduce confusion in phylogenetic signals at deeper nodes.Dating estimates suggested that Chalcidoidea arose near the Jurassic/Cretaceous boundary and that two dynamic shifts in diversification occurred during the evolution of Chalcidoidea.We hypothesized that the potential codiversification between chalcidoids and their hosts may be crucial for accelerating the diversification of Chalcidoidea.Ancestral state reconstruction analyses supported the hypothesis that gall-inducers were mainly derived from parasitoids of gall-inducers,while other gall-inducers were derived from phytophagous groups.Taken together,these findings advance our understanding of mitochondrial genome evolution in the major interfamilial phylogeny of Chalcidoidea.

Mitochondrial genomeChalcidoideaCompositional heterogeneityDivergence timeEvolution of host and gall associations

Jia-Chen Zhu、Hui Xiao、Pu Tang、Xiao-Fei Li、Xuan-Kun Li、Chao-Dong Zhu、Qiong Wu、Jin-Hua Xiao、Cornelis van Achterberg、Da-Wei Huang、Xue-Xin Chen

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State Key Laboratory of Rice Biology,Ministry of Agriculture and Rural Affairs Key Lab of Molecular Biology of Crop Pathogens and Insect Pests,Provincial Key Lab of Biology of Crop Pathogens and Insect Pests of Zhejiang,Institute of Insect Sciences,Zhejiang University,Hangzhou,Zhejiang 310058,China

Key Laboratory of Zoological Systematics and Evolution,Institute of Zoology,Chinese Academy of Sciences,Beijing 100101,China

Florida Museum of Natural History,University of Florida,Gainesville,FL 32611 USA

College of Life Sciences,Nankai University,Tianjin 300071,China

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Key International Joint Research Program of the National Natural Science Foundation of ChinaGeneral Program of the National Natural Science Foundation of ChinaProvincial Key R&D Program of Zhejiang,ChinaKey Project of Laboratory of Lingnan Modern AgricultureFundamental Research Funds for the Central Universities,and Special Research Fund for Distinguished Scholars of Zhejiang Provinc

31920103005320704672021C02045NT20210032018R51004

2023

10.24272/j.issn.2095-8137.2022.379

动物学研究
中国科学院昆明动物研究所 中国动物学会

动物学研究

CSTPCDCSCD
影响因子：0.582
ISSN：0254-5853
年,卷(期)：2023.44(3)
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