Mitochondrial introgression and mito-nuclear discordance obscured the closely related species boundaries in Cletus Stål from China (Heteroptera: Coreidae)

Xue, Dayuan; Zhang, Haiguang; Wang, Kaibin; Zhu, Xiuxiu; Xue, Huai‐Jun; Ye, Zhen; Zheng, Chenguang; Bu, Wenjun

doi:10.1016/j.ympev.2023.107802

Cited by 3 publications

(1 citation statement)

References 87 publications

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“…Because of the documented pitfalls associated with interpretation of population structure from single-locus mitochondrial data (Zhang & Hewitt, 2003; Dong et al, 2023), the overall genetic dichotomy of AOL and AAL lineages, that was initially detected in our haplotype network analyses of CO1 data (Fig. 1b) required verification on a genomic scale.…”

Section: Discussionmentioning

confidence: 99%

A shift in the host web occupancy of dew-drop spiders associated with genetic divergence in the Southwest Pacific

Elias,

Responte,

et al. 2023

Preprint

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AimWe assessed the population genetic structure of the kleptoparasitic spiderArgyrodes bonadeaacross the Southwestern Pacific islands. Our focus is on assessing the impact of overseas distances and, in particular, the Kerama gap, as potential drivers of genetic differentiation. We found that the spider kleptoparasite’s switch to a specific host species is associated with significant genetic variation at fine scales, whereas the same species adoption of a generalist host strategy has likely facilitated its broad dispersal, colonization, and recent range expansion across the southwestern Pacific, and is associated with a lack of geographically– structured genetic variation in these latter, subsequently-colonized landmasses.LocationSouthwestern Pacific IslandsTaxonArgyrodes bonadeaMethodsWe used mitochondrial Cytochrome Oxidase 1 (CO1) gene sequences, and Restriction Site-associated DNA Sequencing (RAD-seq) for our analyses.ResultsTwo strongly supported lineages, an Amami-Okinawa Lineage (AOL) and an Austral-Asia Lineage (AAL) correspond to two separate clades, roughly divided by the Kerama Gap, in phylogenetic trees estimated here. However, species delimitation led to the interpretation of only a single species present. The AOL exhibits complex, geographically-structured host web spider species specificity, wherein the Amami population utilizesCyrtophora, but AOL samples in Okinawa associates exclusively withNephila—and yet all broadly distributed AAL populations show no evidence of host web spider species specificity.Main conclusionThe population boundary between AOL and AAL likely results from local adaptation to novel hosts—instead of isolation by the Kerama Gap—following long-distance dispersal and range expansion. Our results suggest kleptoparasitic spiders have the capacity to overcome permanent deep-sea barriers and colonize distant landmasses. Whereas peripheral populations (AOL) demonstrate the capacity for specialization to a single host, which may have contributed to genetic differentiation and isolation, the broadly-distributed AAL persists and has successfully expanded its geographical range as a host generalist, which may contribute to ongoing gene flow inferred in this study.

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Section: Discussionmentioning

confidence: 99%

A shift in the host web occupancy of dew-drop spiders associated with genetic divergence in the Southwest Pacific

Elias,

Responte,

et al. 2023

Preprint

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Species boundaries and phylogenetics of Aelia stink bugs (Hemiptera: Pentatomidae) in China, with notes on mito‐nuclear discordance

Wang,

Zhu,

Dong

et al. 2024

Zoologica Scripta

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Five stink bugs, Aelia acuminata, A. fieberi, A. furcula, A. klugii and A. sibirica, are found in China and have similar morphologies. Due to the lack of molecular data, the species boundaries and phylogenetic relationships among these five species remain uncertain. In this study, we integrated mitochondrial DNA and nuclear single nucleotide polymorphisms (SNPs) generated by double‐digest restriction site‐associated DNA sequencing (ddRAD‐seq) to perform species delimitation and phylogenetic analyses of the five Aelia species. Most species delimitation analyses based on the cytochrome c oxidase subunit I (COI) gene, mitochondrial genomes and nuclear SNPs yielded five molecular operational taxonomic units (MOTUs), which correspond well to the five Aelia species identified based on morphological characters. We obtained a clear mito‐nuclear discordance between the tree topologies based on mitochondrial genome and genome‐wide SNP data. The D‐statistic and TreeMix analysis suggested that introgression is the most likely cause of mito‐nuclear discordance in Aelia species, which requires confirmation through more extensive sampling and comprehensive data. This study provides the first molecular evidence of the species boundaries and phylogenetic relationships of these five Aelia stink bugs, which is crucial to our understanding of the biodiversity and evolution of Aelia species.

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Phylogenetic conflict between species tree and mitochondrial gene trees in Murininae (Mammalia, Chiroptera) and validation of the genus Harpiola

Wang,

Liang,

et al. 2024

Zoologica Scripta

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The subfamily Murininae is renowned for its inherent taxonomic challenges associated with sampling difficulties and morphological similarities. At present, three genera are acknowledged within the subfamily; however, their phylogenetic interrelations and systematic classification remain debated. In this study, the separation of Harpiola at the genus level was robustly supported by our phylogenomic analyses based on the mitochondrial genome, coding sequences (CDSs) and ultraconserved elements (UCEs) from 12 individuals covering all three genera of Murininae. Notably, a distinctive mito‐nuclear discordance emerged, with the nuclear genealogy ((Harpiocephalus, Harpiola), Murina) contrasting with the mitochondrial genealogy (Harpiocephalus, (Harpiola, Murina)). The integration of these findings with inferences of demographic history reveals that dramatic environmental changes during the Pleistocene glacial and inter‐glacial cycles have shaped the current distribution of Murininae. Moreover, the detection of extensive gene flow between ancient lineages of Harpiola and Murina suggests that an ancestral ‘ghost’ Murina lineage may have contributed its mitochondrial DNA, along with a limited portion of nuclear DNA, to Harpiola in a bygone hybridization zone. In addition to molecular analyses, we employed traditional and geometric morphometric analyses of skulls to differentiate the three genera. Harpiocephalus is readily distinguishable, but Harpiola and certain species of Murina exhibit overlapping characteristics both morphometrically and geometrically which may be the outcome of ancient introgression events. This finding highlights the importance of fine‐scale morphological distinctions within the latter genera, which may be the outcome of ancient introgression events.

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Mitochondrial introgression and mito-nuclear discordance obscured the closely related species boundaries in Cletus Stål from China (Heteroptera: Coreidae)

Cited by 3 publications

References 87 publications

A shift in the host web occupancy of dew-drop spiders associated with genetic divergence in the Southwest Pacific

A shift in the host web occupancy of dew-drop spiders associated with genetic divergence in the Southwest Pacific

Species boundaries and phylogenetics of Aelia stink bugs (Hemiptera: Pentatomidae) in China, with notes on mito‐nuclear discordance

Phylogenetic conflict between species tree and mitochondrial gene trees in Murininae (Mammalia, Chiroptera) and validation of the genus Harpiola

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