Contemporary evolution during invasion: evidence for differentiation, natural selection, and local adaptation

Molecular Ecology, Journal Year: 2015, Volume and Issue: 24(9), P. 1999 - 2017

Published: April 20, 2015

Abstract Biological invasions are ‘natural’ experiments that can improve our understanding of contemporary evolution. We evaluate evidence for population differentiation, natural selection and adaptive evolution invading plants animals at two nested spatial scales: (i) among introduced populations (ii) between native genotypes. Evolution during invasion is frequently inferred, but rarely confirmed as adaptive. In common garden studies, quantitative trait differentiation only marginally lower (~3.5%) relative to populations, despite genetic bottlenecks shorter timescales (i.e. millennia vs. decades). However, genotypes from the range less clear confounded by nonrandom geographic sampling; simulations suggest this causes a high false‐positive discovery rate (>50%) in geographically structured populations. Selection differentials (¦s¦) stronger than species, although gradients (¦ β ¦) not, consistent with species experiencing weaker constraints. This could facilitate rapid adaptation, limited. For example, phenotypic often manifests geographical clines, demonstrate nonadaptive clines evolve colonization (~two‐thirds simulations). Additionally, Q ST ‐ F studies may misrepresent strength form acting invasion. Instead, classic approaches evolutionary ecology (e.g. analysis, reciprocal transplant, artificial selection) necessary determine frequency its influence on establishment, spread impact invasive species. These rare crucial managing biological context global change.

Language: Английский

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Is There a Genetic Paradox of Biological Invasion?

Annual Review of Ecology Evolution and Systematics, Journal Year: 2016, Volume and Issue: 47(1), P. 51 - 72

Published: Aug. 8, 2016

Bottlenecks in population size can reduce fitness and evolutionary potential, yet introduced species often become invasive. This poses a dilemma referred to as the genetic paradox of invasion. Three characteristics must hold true for an be considered paradoxical this sense. First, it pass through bottleneck that reduces variation. Second, despite bottleneck, not succumb many problems associated with low Third, adapt novel environment. Some populations are they do combine these conditions. In some cases, apparent is spurious, seen diversity neutral markers maintain high variation ecologically relevant traits. Even when genuine, unique aspects species' biology allow thrive. We propose research directions into remaining invasion genetics.

Language: Английский

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The devil is in the details: genetic variation in introduced populations and its contributions to invasion

Molecular Ecology, Journal Year: 2015, Volume and Issue: 24(9), P. 2095 - 2111

Published: April 3, 2015

Abstract The influence of genetic variation on invasion success has captivated researchers since the start field genetics 50 years ago. We review history work this question and conclude that variation—as surveyed with molecular markers—appears to shape rarely. Instead, there is a significant disconnect between marker assays ecologically relevant in introductions. argue potential for adaptation facilitate will be shaped by details genotypes affecting phenotypes, we highlight three areas which see opportunities make powerful new insights. (i) architecture adaptive variation. Traits large‐effect alleles may strongly impacted founder events yet more likely respond selection when drift strong. Large‐effect loci especially traits involved biotic interactions. (ii) Cryptic exposed during invasion. Introductions have strong uncover masked due alterations ecological environments. (iii) Genetic interactions admixture multiple source populations. As divergence among sources increases, positive followed increasingly negative effects should expected. Although generally hypothesized beneficial invasion, most often reported intermediate divergence, supporting possibility incompatibilities divergent populations might limiting their introgression. Finally, note these can coupled comparative demographic analyses link changes evolution invasiveness itself.

Language: Английский

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Rapid and repeated local adaptation to climate in an invasive plant

New Phytologist, Journal Year: 2018, Volume and Issue: 222(1), P. 614 - 627

Published: Oct. 27, 2018

Summary Biological invasions provide opportunities to study evolutionary processes occurring over contemporary timescales. To explore the speed and repeatability of adaptation, we examined divergence life‐history traits climate, using latitude as a proxy, in native North American introduced European Australian ranges annual plant Ambrosia artemisiifolia . We explored niche changes following introductions climate dynamic models. In common garden, trait by growing seeds collected across three with highly distinct demographic histories. Heterozygosity–fitness associations were used effect invasion history on potential success. accounted for nonadaptive population differentiation 11 598 single nucleotide polymorphisms. revealed centroid shift warmer, wetter climates ranges. identified repeated latitudinal traits, populations positioned at either end clines. Our data indicate rapid adaptation local despite recent bottleneck limiting genetic variation Australia. Centroid shifts suggest more productive environments, potentially contributing between

Language: Английский

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Deciphering the routes of invasion of Drosophila suzukii by means of ABC random forest

Molecular Biology and Evolution, Journal Year: 2017, Volume and Issue: unknown, P. msx050 - msx050

Published: Jan. 5, 2017

Deciphering invasion routes from molecular data is crucial to understanding biological invasions, including identifying bottlenecks in population size and admixture among distinct populations. Here, we unravel the of invasive pest Drosophila suzukii using a multi-locus microsatellite dataset (25 loci on 23 worldwide sampling locations). To do this, use approximate Bayesian computation (ABC), which has improved reconstruction routes, but can be computationally expensive. We our study illustrate new, more efficient, ABC method, random forest (ABC-RF) compare it standard method (ABC-LDA). find that Japan emerges as most probable source earliest recorded into Hawaii. Southeast China Hawaii together are sources populations western North America, then turn served for those eastern America. European genetically homogeneous than American populations, their northeast China, with evidence limited gene flow US well. All introduced passed through bottlenecks, analyses reveal five events. These findings inform hypotheses concerning how this species evolved between different independent Methodological comparisons indicate ABC-RF ABC-LDA show concordant results if based large number simulated datasets out-performs when comparable manageable datasets, especially analyzing complex introduction scenarios.

Language: Английский

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Multiple introductions, admixture and bridgehead invasion characterize the introduction history of Ambrosia artemisiifolia in Europe and Australia

Molecular Ecology, Journal Year: 2017, Volume and Issue: 26(20), P. 5421 - 5434

Published: Aug. 12, 2017

Admixture between differentiated populations is considered to be a powerful mechanism stimulating the invasive success of some introduced species. It generally facilitated through multiple introductions; however, importance admixture prior introduction has rarely been considered. We assess likelihood that Ambrosia artemisiifolia Europe and Australia developed introductions or were sourced from historical zone within native North America. To do this, we combine large genomic sampling data sets analysed with approximate Bayesian computation random forest scenario evaluation compare single invasion scenarios pre- postintroduction simultaneously. show America originated before global this weed could act as potential source populations. provide evidence supporting hypothesis established range into subsequent bridgehead Australia. discuss evolutionary mechanisms promote invasiveness alien species invasions admixed

Language: Английский

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Genomic biosurveillance of forest invasive alien enemies: A story written in code

Evolutionary Applications, Journal Year: 2019, Volume and Issue: 13(1), P. 95 - 115

Published: Aug. 12, 2019

Abstract The world's forests face unprecedented threats from invasive insects and pathogens that can cause large irreversible damage to the ecosystems. This threatens capacity provide long‐term fiber supply ecosystem services range carbon storage, nutrient cycling, water air purification, soil preservation maintenance of wildlife habitat. Reducing threat forest alien species requires vigilant biosurveillance, process gathering, integrating, interpreting, communicating essential information about pest pathogen achieve early detection warning enable better decision‐making. is challenging due diversity pests need be identified, diverse pathways introduction, difficulty in assessing risk establishment. Genomics powerful new solutions biosurveillance. invasion a story written four chapters: transport, establishment, spread. series processes lead successful leave behind DNA signature tells an invasion. help us understand dynamic, multistep inform management current future introductions. review describes application genomic tools pipelines will accurate identification pathogens, assign outbreak or survey samples putative sources identify spread, assess based on traits impact outcome.

Language: Английский

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Population genetics of the Asian tiger mosquito Aedes albopictus, an invasive vector of human diseases

Heredity, Journal Year: 2016, Volume and Issue: 117(3), P. 125 - 134

Published: June 8, 2016

The Asian tiger mosquito Aedes albopictus is currently one of the most threatening invasive species in world. Native to Southeast Asia, has spread throughout world past 30 years and now present every continent but Antarctica. Because it was main vector recent Dengue Chikungunya outbreaks, because its competency for numerous other viruses pathogens such as Zika virus, A. stands out a model diseases studies. A synthesis current knowledge about genetic diversity needed, knowing interplays between vector, pathogens, environment their epidemiological consequences. Such resources are also valuable assessing role success. We review here large sometimes dispersed literature population genetics albopictus. first debate experimental design these studies an up-to-date assessment available molecular markers. then summarize characteristics natural populations synthesize data regarding worldwide structuring vector. Finally, we pinpoint gaps that remain be addressed suggest possible research directions.

Language: Английский

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Unravelling the invasion history of the Asian tiger mosquito in Europe

Molecular Ecology, Journal Year: 2019, Volume and Issue: 28(9), P. 2360 - 2377

Published: March 8, 2019

Multiple introductions are key features for the establishment and persistence of introduced species. However, little is known about contribution genetic admixture to invasive potential populations. To address this issue, we studied recent invasion Asian tiger mosquito (Aedes albopictus) in Europe. Combining genome-wide single nucleotide polymorphisms historical knowledge using an approximate Bayesian computation framework, reconstruct colonization routes establish demographic dynamics invasion. The Europe involved at least three independent Albania, North Italy Central that subsequently acted as dispersal centres throughout We show topology human transportation networks shaped histories with being main Introduction modalities conditioned levels diversity invading populations, genetically diverse admixed populations promoted more secondary have spread farther than single-source invasions. This genomic study provides further crucial insights into a general understanding role by modern trade driving biological

Language: Английский

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Unravelling the global invasion routes of a worldwide invader, the red swamp crayfish (Procambarus clarkii)

Freshwater Biology, Journal Year: 2019, Volume and Issue: 64(8), P. 1382 - 1400

Published: May 15, 2019

Abstract Understanding how introduced species succeed and become widely distributed within non‐native areas is critical to reduce the threats posed by them. Our goal was reconstruct main invasion routes dynamics of a global freshwater invader, red swamp crayfish, Procambarus clarkii , through analysis its genetic variability in both native invasive ranges. We inferred population structure from fragment (608 base pairs) mitochondrial marker cytochrome c oxidase subunit I 1,062 individuals P. addition 354 GenBank sequences, for total 122 populations (22 natives 100 invaded). Genetic assessed using molecular variance non‐metric multidimensional scaling analyses. analysed haplotype frequencies each locality region. The network depicted Pop ART software. A high diversity found range (haplotype [Hd]: 0.90), but also some areas, such as western U.S.A. (Hd: 0.80), Mexico 0.78), hotspots Europe (e.g. southern Spain or Italy), suggesting complex pattern multiple introductions. grouped all localities five differentiated groups according biogeographic origin: area, west Americas, east U.S.A., Asia, Europe. Additionally, identification 15 haplotypes shared between at least two localities, phylogenetic estimation indices differentiation among allowed us identify large admixture range; independent (i.e. westwards eastwards) (Louisiana Texas) with translocations area; stepping‐stone introduction Japan (involving few individuals) themselves China afterwards; entry Louisiana ( ) into their secondary introductions over well other possible central study emphasises need unravelling demographic processes underlying exotic admixture, bridgehead effect, propagule pressure) control spread species. findings highlight value analyses geographic origin source invaded order facilitate management environmental DNA monitoring).

Language: Английский

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