Phylogenetic Analysis of Chalcidoid Wasps
Summary
Chalcidoid wasps constitute one of the most hyperdiverse lineages of Hymenoptera, encompassing an estimated half a million species occupying virtually all terrestrial ecosystems. These minute parasitoids display a remarkable array of life histories, from gall-forming and plant-feeding to koinobiont and idiobiont parasitism across insect hosts. Resolving the superfamily’s evolutionary history has been impeded by rapid radiations, morphological homoplasy and saturation in molecular markers. Recent integrative efforts combining high-throughput sequencing of conserved loci with classical morphology have yielded robust phylogenies that clarify family-level relationships, reveal non-monophyly in several traditional taxa and propose a revised classification framework. Divergence time analyses place the origin of major chalcidoid lineages in the Jurassic, coincident with key angiosperm and host-insect diversifications. Understanding these patterns not only illuminates insect macroevolution but also underpins the development of biological-control agents, as many species are applied against agricultural and forest pests worldwide.
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Phylogenetic Analysis of Chalcidoid Wasps publication trend
The graph below shows the total number of articles in phylogenetic analysis of chalcidoid wasps across all publications each year (not limited to Nature Index journals).
Technical terms
Phylogenetic analysis: Reconstruction of evolutionary relationships among organisms based on genetic or morphological data.
Ultra-conserved element (UCE): Genomic region highly similar across divergent taxa used as stable markers for phylogenomic studies.
Anchored hybrid enrichment: Targeted sequencing technique that isolates hundreds of conserved genomic loci for comparative analysis.
Monophyletic: Describes a group containing an ancestor and all its descendants in a phylogenetic tree.
Paraphyletic: Describes a group containing an ancestor and some, but not all, of its descendants.
Polyphyletic: Describes a group composed of unrelated lineages lacking a unique common ancestor in the set.
Concatenated analysis: Phylogenetic approach combining multiple gene alignments into a single dataset to infer relationships.
References
- The Chalcidoidea bush of life: evolutionary history of a massive radiation of minute wasps. Cladistics (2023).
- From hell’s heart I stab at thee! A determined approach towards a monophyletic Pteromalidae and reclassification of Chalcidoidea (Hymenoptera). Journal of Hymenoptera Research (2022).
- A Molecular Phylogeny of the Chalcidoidea (Hymenoptera). PLOS ONE (2011).
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