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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Genetic reconstructions of invasion history

Molecular Ecology, Journal Year: 2015, Volume and Issue: 24(9), P. 2212 - 2225

Published: Feb. 20, 2015

Abstract A diverse array of molecular markers and constantly evolving analytical approaches have been employed to reconstruct the invasion histories most notorious invasions. Detailed information on source(s) introduction, route, type vectors, number independent introductions pathways secondary spread has corroborated for a large biological In this review, I present promises limitations current techniques while discussing future directions. Broad phylogeographic surveys native introduced populations traced back routes with surprising precision. These often further clarify species boundaries reveal complex patterns genetic relationships noninvasive relatives. Moreover, fine‐scale analyses population genetics or genomics allow deep inferences colonization dynamics across invaded ranges can extent gene flow among various geographical scales, major demographic events such as bottlenecks well other important evolutionary hybridization taxa, inbreeding selective sweeps. Genetic data successfully historical, ecological enable comprehensive reconstruction process. The advent next‐generation sequencing, along availability extensive databases repository sequences generated by barcoding projects opens opportunity broadly monitor biodiversity, identify early invasions quantify failed that would otherwise remain inconspicuous human eye.

Language: Английский

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Transposable elements as agents of rapid adaptation may explain the genetic paradox of invasive species

Molecular Ecology, Journal Year: 2015, Volume and Issue: 24(9), P. 2241 - 2252

Published: Jan. 22, 2015

Abstract Rapid adaptation of invasive species to novel habitats has puzzled evolutionary biologists for decades, especially as this often occurs in the face limited genetic variability. Although some ecological traits common have been identified, little is known about possible genomic/genetic mechanisms that may underlie their success. A scenario many introductions small founder population sizes will lead reduced diversity, but invading populations experience large environmental perturbations, such changes habitat and stress. sudden intense stress usually considered a negative context, these perturbations actually facilitate rapid by affecting genome structure, organization function via interactions with transposable elements ( TE s), low diversity. Stress‐induced activity can alter gene action promote structural variation observed new environments. We focus here on adaptive potential s relation highlight role powerful mutational forces rapidly create hypothesize explain despite (the paradox species), provide framework under which hypothesis be tested using recently developed emerging genomic technologies.

Language: Английский

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The role of life history traits in mammalian invasion success

Ecology Letters, Journal Year: 2015, Volume and Issue: 18(10), P. 1099 - 1107

Published: Aug. 21, 2015

Abstract Why some organisms become invasive when introduced into novel regions while others fail to even establish is a fundamental question in ecology. Barriers success are expected filter species at each stage along the invasion pathway. No study date, however, has investigated how traits associate with from introduction spread large spatial scale any group. Using largest data set of mammalian introductions global and recently developed phylogenetic comparative methods, we show that human‐mediated considerably bias which have opportunity invasive, as highly productive mammals longer reproductive lifespans far more likely be introduced. Subsequently, greater output higher effort associated both establishment stages. High productivity thus supports population growth success, barriers filtering progressively fecundity.

Language: Английский

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Fast life history traits promote invasion success in amphibians and reptiles

Ecology Letters, Journal Year: 2017, Volume and Issue: 20(2), P. 222 - 230

Published: Jan. 4, 2017

Abstract Competing theoretical models make different predictions on which life history strategies facilitate growth of small populations. While ‘fast’ allow for rapid increase in population size and limit vulnerability to stochastic events, ‘slow’ bet‐hedging may reduce variance vital rates response stochasticity. We test these using biological invasions since founder alien populations start small, compiling the largest dataset yet global herpetological introductions traits. Using state‐of‐the‐art phylogenetic comparative methods, we show that successful invaders have fast traits, such as large frequent clutches, at both establishment spread stages. These results, together with recent findings mammals plants, support ‘fast advantage’ importance high potential rate. Conversely, birds are bet‐hedgers. propose transient dynamics differences longevity behavioural flexibility can help reconcile apparently contrasting results across terrestrial vertebrate classes.

Language: Английский

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Risks to pollinators and pollination from invasive alien species

Nature Ecology & Evolution, Journal Year: 2017, Volume and Issue: 2(1), P. 16 - 25

Published: Dec. 11, 2017

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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A conceptual framework for invasion in microbial communities

The ISME Journal, Journal Year: 2016, Volume and Issue: 10(12), P. 2773 - 2779

Published: May 3, 2016

Language: Английский

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Genetic and demographic founder effects have long‐term fitness consequences for colonising populations

Ecology Letters, Journal Year: 2017, Volume and Issue: 20(4), P. 436 - 444

Published: Feb. 1, 2017

Colonisation is a fundamental ecological and evolutionary process that drives the distribution abundance of organisms. The initial ability colonists to establish determined largely by number founders their genetic background. We explore importance these demographic properties for longer term persistence adaptation populations colonising novel habitat using experimental Tribolium castaneum. introduced individuals from three backgrounds (inbred - outbred) into environment at founding sizes (2-32), tracked seven generations. Inbreeding had negative effects, whereas outbreeding generally positive effects on establishment, population growth long-term persistence. Severe bottlenecks due small reduced variation fitness but did not prevent if originated genetically diverse populations. Thus, we find important independent roles both processes in driving colonisation success.

Language: Английский

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Evolutionary Parasitology

Oxford University Press eBooks, Journal Year: 2021, Volume and Issue: unknown

Published: July 15, 2021

Abstract Parasites are ubiquitous and shape almost every aspect of their hosts, including physiology, behaviour, life histories, the structure microbiota, entire communities. Hence, parasitism is one most potent forces in nature and, without parasites, world would look very different. The book gives an overview over parasite groups diversity defences that hosts have evolved, such as immune systems. Principles evolutionary biology ecology analyse major elements host–parasite interactions, virulence, infection processes, tolerance, resistance, specificity, memory, polymorphisms, within-host dynamics, diseases spaces, many other aspects. Genetics always key these topics. Modelling, furthermore, can predict best strategies for host parasites. Similarly, spread infectious disease epidemiology combines with molecular data genomics. Furthermore, parasites evolved ways to overcome manipulate hosts. Hosts therefore, continuously co-evolve, changes sometimes occurring rapidly, requiring geological times. Many humans emerged from a zoonotic origin, processes governed by basic principles discussed different sections. this integrates fields study phenomena. It summarizes essential topics parasitology will be useful broad audience.

Language: Английский

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