Molecular Ecology最新文献

{"title":"A Genetic Polymorphism Underlying Alternative Reproductive Tactics in Eurycea Salamanders.","authors":"Yatin Kalki, Todd W Pierson","doi":"10.1111/mec.17621","DOIUrl":"https://doi.org/10.1111/mec.17621","url":null,"abstract":"<p><p>Alternative reproductive tactics are discrete, intrasexual differences in reproductive behaviour within a population. In some cases, these complex phenotypes are determined by autosomal supergenes or sex chromosomes-both of which exhibit reduced recombination and thus enable the linked inheritance of co-adapted alleles from multiple loci. Most alternative reproductive tactics in amphibians are plastic (and reversible), environmentally determined and lacking morphological differentiation, but a striking exception is found in the two-lined salamander (Eurycea bislineata) species complex. In some populations, two distinct male phenotypes coexist: 'searching' males have mental glands, protruding premaxillary teeth and elongate cirri used in terrestrial courtship, while 'guarding' males lack these traits and instead have hypertrophied jaw musculature used in mate guarding at aquatic nesting sites. These tactics differ in many morphological and behavioural phenotypes, but their proximate cause has not yet been described. Here, we generated genome-wide SNP data from > 130 Eurycea cf. wilderae collected from Highlands Biological Station. We provide evidence for an XY sex determination and for a Y-linked polymorphism underlying alternative reproductive tactics in this population. We then develop and validate a PCR-based genotyping assay and apply it to characterise the sex ratio and relative frequency of male tactics from a sample of larvae. Our results add to the growing body of literature exploring the importance of supergenes and sex chromosomes in complex intraspecific polymorphisms, and we highlight opportunities for future work to continue exploring the genomic architecture of these traits.</p>","PeriodicalId":210,"journal":{"name":"Molecular Ecology","volume":" ","pages":"e17621"},"PeriodicalIF":4.5,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142798792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Grassland Afforestation Drives Biotic Homogenisation of Soil Microbial Communities at a Regional Scale.","authors":"Martín Nicolás Ribero, María Romina Schiaffino, Julieta Filloy","doi":"10.1111/mec.17617","DOIUrl":"https://doi.org/10.1111/mec.17617","url":null,"abstract":"<p><p>Grassland afforestation poses a threat to biodiversity beyond land-use conversion. Diversity patterns are shaped by temporal dynamics, particularly, time since afforestation can decline beta diversity and lead to biotic homogenisation. Our study examines the effect of grassland afforestation on soil prokaryotic and fungal beta diversity. We evaluate the contributions of colonisation and extinction processes to beta diversity, as well as the replacement of endemic species by ubiquitous ones. Along a 200 km climatic gradient in Argentina's Pampas region, we analysed grasslands and mature eucalypt plantations at different times since afforestation. Soil samples were collected at each site and analysed using 16S (V3-V4) and ITS2 amplicon sequencing to identify prokaryotic and fungal communities, respectively. The analyses revealed biotic homogenisation at the transition from grassland to newly planted stands, evidenced by a decrease in intratreatment beta diversity. Increasing time since afforestation did not exacerbate this decline. However, our findings indicate that there are different responses between prokaryotes and fungi. The homogenisation of prokaryotes in young stands is due to the low heterogeneity in colonising communities. On the other hand, the decline in fungal beta diversity is likely caused by other mechanisms beyond extinction or replacement. The study highlights the impacts of the afforestation process on the beta diversity of soil microbial communities of grasslands, affecting taxonomic groups in different ways. Although microbial diversity may be partially restored in time in eucalypt plantations, it is important to investigate its underlying mechanisms and the ecological implications for microbial diversity and its spatial distribution.</p>","PeriodicalId":210,"journal":{"name":"Molecular Ecology","volume":" ","pages":"e17617"},"PeriodicalIF":4.5,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142793981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Genomic-Guided Conservation Actions to Restore the Most Endangered Conifer in the Mediterranean Basin.","authors":"José Carlos Del Valle, Montserrat Arista, Carmen Benítez-Benítez, Pedro Luis Ortiz, Francisco J Jiménez-López, Anass Terrab, Francisco Balao","doi":"10.1111/mec.17605","DOIUrl":"https://doi.org/10.1111/mec.17605","url":null,"abstract":"<p><p>Species with extremely small population sizes are critically endangered because of reduced genetic diversity, increased inbreeding and hybridisation threats. Genomic tools significantly advance conservation by revealing genetic insights into endangered species, notably in monitoring frameworks. Sicilian fir (Abies nebrodensis) is the most endangered conifer in Europe with only 30 adult trees in an 84-ha area. Using 20,824 SNPs from RAD-seq, employing genome assembly and a custom 120 SNP-array, we evaluated genetic diversity, mating patterns, and effective population size in adult trees, 118 natural seedlings, and 2064 nursery seedlings from past conservation actions. We assessed introgression from neighbouring non-native fir plantations (~6%) and established an intra-population assisted gene flow (AGF) program selecting the most genetically dissimilar individuals and investigating the outcome through simulations. Genomic analysis unveiled significant genetic diversity among adult Sicilian firs, comparable to non-endangered Mediterranean firs with larger populations. However, the genetic diversity of the forthcoming generation declined due to high self-fertilisation, leading to marked inbreeding (F_IS = 0.38) and an alarmingly low effective population size (N_e = 6). Nursery seedling monitoring revealed similar selfing rates and introgression (~2%) from non-native firs. Although intra-population AGF could help to mitigate genetic loss, it may not alleviate the species vulnerability to imminent environmental challenges, perpetuating the risk of an extinction vortex. Hence, investigating the impact of Sicilian fir population decline and selfing on inbreeding depression, along with exploring the potential of hybrids for genetic load alleviation and future adaptation, is crucial for effective conservation strategies.</p>","PeriodicalId":210,"journal":{"name":"Molecular Ecology","volume":" ","pages":"e17605"},"PeriodicalIF":4.5,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142783577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Circumpolar and Regional Seascape Drivers of Genomic Variation in a Southern Ocean Octopus.","authors":"Sally C Y Lau, Nerida G Wilson, Phillip C Watts, Catarina N S Silva, Ira R Cooke, A Louise Allcock, Felix C Mark, Katrin Linse, Toni Jernfors, Jan M Strugnell","doi":"10.1111/mec.17601","DOIUrl":"https://doi.org/10.1111/mec.17601","url":null,"abstract":"<p><p>Understanding how ecological, environmental and geographic features influence population genetic patterns provides crucial insights into a species' evolutionary history, as well as their vulnerability or resilience under climate change. In the Southern Ocean, population genetic variation is influenced across multiple spatial scales ranging from circum-Antarctic, which encompasses the entire continent, to regional, with varying levels of geographic separation. However, comprehensive analyses testing the relative importance of different environmental and geographic variables on genomic variation across these scales are generally lacking in the Southern Ocean. Here, we examine genome-wide single nucleotide polymorphisms of the Southern Ocean octopus Pareledone turqueti across the Scotia Sea and the Antarctic continental shelf, at depths between 102 and 1342 m, throughout most of this species' range. The circumpolar distribution of P. turqueti is biogeographically structured with a clear signature of isolation-by-geographical distance, but with long-distance genetic connectivity also detected between East and West Antarctica. Genomic variation of P. turqueti was also associated with bottom water temperature at a circumpolar scale, driven by a genotype-temperature association with the warmer sub-Antarctic Shag Rocks and South Georgia. Within the Scotia Sea, geographic distance, oxygen and fine-scale isolation-by-water depth were apparent drivers of genomic variation at regional scales. Putative positive selection of haemocyanin (oxygen transport protein), calcium ion transport and genes linked to RNA modification, detected within the Scotia Sea, suggest physiological adaptation to the regional sharp temperature gradient (~0-+2°C). Overall, we identified seascape drivers of genomic variation in the Southern Ocean at circumpolar and regional scales in P. turqueti and contextualised the role of environmental adaptations in the Southern Ocean.</p>","PeriodicalId":210,"journal":{"name":"Molecular Ecology","volume":" ","pages":"e17601"},"PeriodicalIF":4.5,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142764752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Divergence in Regulatory Regions and Gene Duplications May Underlie Chronobiological Adaptation in Desert Tortoises.","authors":"N Jade Mellor, Timothy H Webster, Hazel Byrne, Avery S Williams, Taylor Edwards, Dale F DeNardo, Melissa A Wilson, Kenro Kusumi, Greer A Dolby","doi":"10.1111/mec.17600","DOIUrl":"https://doi.org/10.1111/mec.17600","url":null,"abstract":"<p><p>Many cellular processes and organismal behaviours are time-dependent, and asynchrony of these phenomena can facilitate speciation through reinforcement mechanisms. The Mojave and Sonoran desert tortoises (Gopherus agassizii and G. morafkai respectively) reside in adjoining deserts with distinct seasonal rainfall patterns and they exhibit asynchronous winter brumation and reproductive behaviours. We used whole genome sequencing of 21 individuals from the two tortoise species and an outgroup to understand genes potentially underlying these characteristics. Genes within the most diverged 1% of the genome (F_ST ≥ 0.63) with putatively functional variation showed extensive divergence in regulatory elements, particularly promoter regions. Such genes related to UV nucleotide excision repair, mitonuclear and homeostasis functions. Genes mediating chronobiological (cell cycle, circadian and circannual) processes were also among the most highly diverged regions (e.g., XPA and ZFHX3). Putative promoter variants had significant enrichment of genes related to regulatory machinery (ARC-Mediator complex), suggesting that transcriptional cascades driven by regulatory divergence may underlie the behavioural differences between these species, leading to asynchrony-based prezygotic isolation. Further investigation revealed extensive expansion of respiratory and intestinal mucins (MUC5B and MUC5AC) within Gopherus, particularly G. morafkai. This expansion could be a xeric-adaptation to water retention and/or contribute to differential Mycoplasma agassizii infection rates between the two species, as mucins help clear inhaled dust and bacterial. Overall, results highlight the diverse array of genetic changes underlying divergence, adaptation and reinforcement during speciation.</p>","PeriodicalId":210,"journal":{"name":"Molecular Ecology","volume":" ","pages":"e17600"},"PeriodicalIF":4.5,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142764765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recent Crop-To-Weed Adaptive Introgression Has Reshaped the Genomic Composition and Geographical Structure of US Weedy Rice (Oryza spp.).","authors":"Marshall J Wedger, Evan Xiao, Thomas R Butts, Justin L Chlapecka, L Connor Webster, Kenneth M Olsen","doi":"10.1111/mec.17604","DOIUrl":"https://doi.org/10.1111/mec.17604","url":null,"abstract":"<p><p>Weedy rice is a close relative of cultivated rice (Oryza sativa) that infests rice fields worldwide and drastically reduces yields. To combat this agricultural pest, rice farmers in the southern US began to grow herbicide-resistant (HR) rice cultivars in the early 2000s, which permitted the application of herbicides that selectively targeted weedy rice without harming the crop. The widespread adoption of HR rice coincided with increased reliance on hybrid rice cultivars in place of traditional inbred varieties. Although both cultivated and weedy rice are predominantly self-fertilising, the combined introductions of HR and hybrid rice dramatically altered the opportunities and selective pressure for crop-weed hybridization and adaptive introgression. In this study, we generated genotyping-by-sequencing data for 178 weedy rice samples collected from across the rice growing region of the southern US; these were analysed together with previously published rice and weedy rice genome sequences to determine the recent genomic and population genetic consequences of adaptive introgression and selection for herbicide resistance in US weedy rice populations. We find a reshaped geographical structure of southern US weedy rice as well as purging of crop-derived alleles in some weed strains of crop-weed hybrid origin. Furthermore, we uncover evidence that related weedy rice strains have made use of different genetic mechanisms to respond to selection. Lastly, we identify widespread presence of HR alleles in both hybrid-derived and nonadmixed samples, which further supports an overall picture of weedy rice evolution and adaptation through diverse genetic mechanisms.</p>","PeriodicalId":210,"journal":{"name":"Molecular Ecology","volume":" ","pages":"e17604"},"PeriodicalIF":4.5,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142764823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Extreme Environmental Variability Induces Frontloading of Coral Biomineralisation Genes to Maintain Calcification Under pCO₂ Variability.","authors":"Kristen T Brown, Zoe Dellaert, Marcelina P Martynek, Julia Durian, Tali Mass, Hollie M Putnam, Katie L Barott","doi":"10.1111/mec.17603","DOIUrl":"https://doi.org/10.1111/mec.17603","url":null,"abstract":"<p><p>Corals residing in habitats that experience high-frequency seawater pCO₂ variability may possess an enhanced capacity to cope with ocean acidification, yet we lack a clear understanding of the molecular toolkit enabling acclimatisation to environmental extremes or how life-long exposure to pCO₂ variability influences biomineralisation. Here, we examined the gene expression responses and micro-skeletal characteristics of Pocillopora damicornis originating from the reef flat and reef slope of Heron Island, southern Great Barrier Reef. The reef flat and reef slope had similar mean seawater pCO₂, but the reef flat experienced twice the mean daily pCO₂ amplitude (range of 797 v. 399 μatm day^-1, respectively). A controlled mesocosm experiment was conducted over 8 weeks, exposing P. damicornis from the reef slope and reef flat to stable (218 ± 9) or variable (911 ± 31) diel pCO₂ fluctuations (μatm; mean ± SE). At the end of the exposure, P. damicornis originating from the reef flat demonstrated frontloading of 25% of the expressed genes regardless of treatment conditions, suggesting constitutive upregulation. This included higher expression of critical biomineralisation-related genes such as carbonic anhydrases, skeletal organic matrix proteins, and bicarbonate transporters. The observed frontloading corresponded with a 40% increase of the fastest deposited areas of the skeleton in reef flat corals grown under non-native, stable pCO₂ conditions compared to reef slope conspecifics, suggesting a compensatory response that stems from acclimatisation to environmental extremes and/or relief from stressful pCO₂ fluctuations. Under escalating ocean warming and acidification, corals acclimated to environmental variability warrant focused investigation and represent ideal candidates for active interventions to build reef resilience while societies adopt strict policies to limit climate change.</p>","PeriodicalId":210,"journal":{"name":"Molecular Ecology","volume":" ","pages":"e17603"},"PeriodicalIF":4.5,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142737958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Genomic Update on the Evolutionary Impact of Chromosomal Rearrangements","authors":"Hannah Augustijnen,&nbsp;Cristina Arias-Sardá,&nbsp;Marta Farré,&nbsp;Kay Lucek","doi":"10.1111/mec.17602","DOIUrl":"10.1111/mec.17602","url":null,"abstract":"&lt;p&gt;The field of evolutionary and speciation genomics has been revolutionised by the ubiquity and availability of genomic data even for non-model organisms. The capability to sequence long-fragment DNA has particularly spurred trans-national initiatives to generate publicly available chromosome-resolved reference genomes across the Tree of Life. Initiatives such as the Darwin Tree of Life (The Darwin Tree of Life Project Consortium et al. &lt;span&gt;2022&lt;/span&gt;) or the European Genome Atlas (ERGA; Mazzoni, Ciofi, and Waterhouse &lt;span&gt;2023&lt;/span&gt;) enable researchers around the globe to address unresolved questions and pursue novel lines of research. The role of chromosomal rearrangements (CRs) in driving evolution has been a long-standing question in evolutionary biology (Berdan et al. &lt;span&gt;2023&lt;/span&gt;; Dobzhansky and Sturtevant &lt;span&gt;1938&lt;/span&gt;; King &lt;span&gt;1995&lt;/span&gt;; Robertson &lt;span&gt;1916&lt;/span&gt;; Wellenreuther and Bernatchez &lt;span&gt;2018&lt;/span&gt;; White &lt;span&gt;1978&lt;/span&gt;). CRs comprise an array of rearrangements that reorganise the linear sequence of the genome, ranging from local structural variants (SVs) such as inversions or duplications, to large-scale karyological changes, including chromosomal fusions and fissions (Berdan et al. &lt;span&gt;2023&lt;/span&gt;; Lucek et al. &lt;span&gt;2023&lt;/span&gt;). Current genomic data have already highlighted that CRs are much more common and diverse across taxa than previously thought (e.g., Damas et al. &lt;span&gt;2022&lt;/span&gt;; Weissensteiner et al. &lt;span&gt;2020&lt;/span&gt;). While CRs can now more easily be mapped within and across taxa, their potential role for evolution and species diversification has often remained enigmatic, and theoretical explorations exist for only a few types of CR (Berdan et al. &lt;span&gt;2023&lt;/span&gt;). At the dawn of broad genome availability for model and non-model organisms alike, our special issue aims to provide a genomic update on the evolutionary impact of various types of CRs. Specifically, our special issue asks what causes the evolution and establishment of CRs and whether these causes differ among taxa? Are CRs randomly distributed across the genome, and do they cause other chromosomal rearrangements? How can CRs promote diversification and how do they potentially lead to speciation? Is the evolutionary impact of CRs the same among different types of CRs? Finally, do CRs have a different evolutionary impact depending on whether autosomes or sex chromosomes are involved?&lt;/p&gt;&lt;p&gt;Whether CRs are directly or indirectly involved in adaptation and diversification, detecting them and understanding the factors influencing their appearance in the first place are key to start shedding light on the evolutionary processes linked to CRs. Traditionally, CRs were detected either directly, with cytogenetic screenings (Krimbas and Powell &lt;span&gt;1992&lt;/span&gt;; Stebbins &lt;span&gt;1971&lt;/span&gt;; White &lt;span&gt;1973&lt;/span&gt;), or indirectly, by looking at the consequences of the rearrangements (e.g., Dobzhansky and Sturtevant &lt;span&gt;1938&lt;/span&gt;).","PeriodicalId":210,"journal":{"name":"Molecular Ecology","volume":"33 24","pages":""},"PeriodicalIF":4.5,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/mec.17602","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142708712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Genetic Architecture of Immune Cell DNA Methylation in the Rhesus Macaque.","authors":"Christina E Costa, Marina M Watowich, Elisabeth A Goldman, Kirstin N Sterner, Josue E Negron-Del Valle, Daniel Phillips, Michael L Platt, Michael J Montague, Lauren J N Brent, James P Higham, Noah Snyder-Mackler, Amanda J Lea","doi":"10.1111/mec.17576","DOIUrl":"https://doi.org/10.1111/mec.17576","url":null,"abstract":"<p><p>Genetic variation that impacts gene regulation, rather than protein function, can have strong effects on trait variation both within and between species. Epigenetic mechanisms, such as DNA methylation, are often an important intermediate link between genotype and phenotype, yet genetic effects on DNA methylation remain understudied in natural populations. To address this gap, we used reduced representation bisulfite sequencing to measure DNA methylation levels at 555,856 CpGs in peripheral whole blood of 573 samples collected from free-ranging rhesus macaques (Macaca mulatta) living on the island of Cayo Santiago, Puerto Rico. We used allele-specific methods to map cis-methylation quantitative trait loci (meQTL) and tested for effects of 243,389 single nucleotide polymorphisms (SNPs) on local DNA methylation levels. Of 776,092 tested SNP-CpG pairs, we identified 516,213 meQTL, with 69.12% of CpGs having at least one meQTL (FDR < 5%). On average, meQTL explained 21.2% of nearby methylation variance, significantly more than age or sex. meQTL were enriched in genomic compartments where methylation is likely to impact gene expression, for example, promoters, enhancers and binding sites for methylation-sensitive transcription factors. In support, using mRNA-seq data from 172 samples, we confirmed 332 meQTL as whole blood cis-expression QTL (eQTL) in the population, and found meQTL-eQTL genes were enriched for immune response functions, like antigen presentation and inflammation. Overall, our study takes an important step towards understanding the genetic architecture of DNA methylation in natural populations, and more generally points to the biological mechanisms driving phenotypic variation in our close relatives.</p>","PeriodicalId":210,"journal":{"name":"Molecular Ecology","volume":" ","pages":"e17576"},"PeriodicalIF":4.5,"publicationDate":"2024-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142708714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Population Genetics and Invasion History of the European Starling Across Aotearoa New Zealand.","authors":"Bryan Thompson, Kamolphat Atsawawaranunt, Melissa C Nehmens, William S Pearman, E Owen Perkins, Pavel Pipek, Lee A Rollins, Hui Zhen Tan, Annabel Whibley, Anna W Santure, Katarina C Stuart","doi":"10.1111/mec.17579","DOIUrl":"https://doi.org/10.1111/mec.17579","url":null,"abstract":"<p><p>The expansion of human settlements over the past few centuries is responsible for an unprecedented number of invasive species introductions globally. An important component of biological invasion management is understanding how introduction history and postintroduction processes have jointly shaped present-day distributions and patterns of population structure, diversity and adaptation. One example of a successful invader is the European starling (Sturnus vulgaris), which was intentionally introduced to numerous countries in the 19th century, including Aotearoa New Zealand, where it has become firmly established. We used reduced representation sequencing to characterise the genetic population structure of the European starling in New Zealand, comparing it to that present in sampling locations in the native range and invasive Australian range. The population structure and genetic diversity patterns we found suggested restricted gene flow from the majority of New Zealand to the northmost sampling location (Auckland). We also profiled genetic bottlenecks and shared outlier genomic regions, which supported historical accounts of translocations between both Australian subpopulations and New Zealand, and provided evidence of which documented translocation events were more likely to have been successful. Using these results as well as historic demographic patterns, we demonstrate how genomic analysis complements even well-documented invasion histories to better understand invasion processes, with direct implications for understanding contemporary gene flow and informing invasion management.</p>","PeriodicalId":210,"journal":{"name":"Molecular Ecology","volume":" ","pages":"e17579"},"PeriodicalIF":4.5,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142685382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}