Abstract:
:Adaptation to new environments often occurs in the face of gene flow. Under these conditions, gene flow and recombination can impede adaptation by breaking down linkage disequilibrium between locally adapted alleles. Theory predicts that this decay can be halted or slowed if adaptive alleles are tightly linked in regions of low recombination, potentially favouring divergence and adaptive evolution in these regions over others. Here, we compiled a global genomic data set of over 1,300 individual threespine stickleback from 52 populations and compared the tendency for adaptive alleles to occur in regions of low recombination between populations that diverged with or without gene flow. In support of theory, we found that putatively adaptive alleles (FST and dXY outliers) tend to occur more often in regions of low recombination in populations where divergent selection and gene flow have jointly occurred. This result remained significant when we employed different genomic window sizes, controlled for the effects of mutation rate and gene density, controlled for overall genetic differentiation, varied the genetic map used to estimate recombination and used a continuous (rather than discrete) measure of geographic distance as proxy for gene flow/shared ancestry. We argue that our study provides the first statistical evidence that the interaction of gene flow and selection biases divergence toward regions of low recombination.
journal_name
Mol Ecoljournal_title
Molecular ecologyauthors
Samuk K,Owens GL,Delmore KE,Miller SE,Rennison DJ,Schluter Ddoi
10.1111/mec.14226subject
Has Abstractpub_date
2017-09-01 00:00:00pages
4378-4390issue
17eissn
0962-1083issn
1365-294Xjournal_volume
26pub_type
杂志文章abstract::The desert locust (Schistocerca gregaria) undergoes crowding-induced phase transformation from solitary form to gregarious form. The transformations involves changes in behaviour, colour, development, morphometry, fecundity and endocrine physiology. Recession populations of the desert locust exist primarily in the sol...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1046/j.1365-294x.2001.01212.x
更新日期:2001-03-01 00:00:00
abstract::The formation of continental Europe in the Neogene was due to the regression of the Tethys Ocean and of the Paratethys Sea. The dynamic geology of the area and repetitious transitions between marine and freshwater conditions presented opportunities for the colonization of newly emerging hydrological networks and diver...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.13499
更新日期:2016-02-01 00:00:00
abstract::Studies that span entire species ranges can provide insight into the relative roles of historical contingency and contemporary factors that influence population structure and can reveal patterns of genetic variation that might otherwise go undetected. American shad is a wide ranging anadromous clupeid fish that exhibi...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.12197
更新日期:2013-03-01 00:00:00
abstract::Classification, phylogeography and the testing of evolutionary hypotheses rely on correct estimation of species phylogeny. Early molecular phylogenies often relied on mtDNA alone, which acts as a single linkage group with one history. Over the last decade, the use of multiple nuclear sequences has often revealed confl...
journal_title:Molecular ecology
pub_type: 杂志文章,评审
doi:10.1111/mec.14096
更新日期:2017-06-01 00:00:00
abstract::In arthropods, the intracellular bacteria Wolbachia often induce cytoplasmic incompatibility (CI) between sperm and egg, which causes conditional embryonic death and promotes the spatial spread of Wolbachia infections into host populations. The ability of Wolbachia to spread in natural populations through CI has attra...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.13035
更新日期:2015-01-01 00:00:00
abstract::Bemisia tabaci (Hemiptera: Aleyrodidae) is a haplo-diploid species of sap-feeding insect belonging to the group of insects commonly known as whiteflies. From earlier analyses of mitochondrial and ribosomal markers it has been concluded that in the Asia-Pacific region there were three major indigenous races as well as ...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2005.02700.x
更新日期:2005-10-01 00:00:00
abstract::Recent advances in the application of the polymerase chain reaction make it possible to score individuals at a large number of loci. The RAPD (random amplified polymorphic DNA) method is one such technique that has attracted widespread interest. The analysis of population structure with RAPD data is hampered by the la...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294x.1994.tb00109.x
更新日期:1994-04-01 00:00:00
abstract::An electrophoretic survey of 81 populations of arctic Daphnia pulex from around the Svalbard archipelago revealed the presence of 49 unique allozyme clones (N = 3357). Two closely related clones accounted for 66% of the total sample, and were widespread across the archipelago. Restriction fragment length polymorphisms...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294x.1994.tb00128.x
更新日期:1994-10-01 00:00:00
abstract::Sequencing reduced-representation libraries of restriction site-associated DNA (RADseq) to identify single nucleotide polymorphisms (SNPs) is quickly becoming a standard methodology for molecular ecologists. Because of the scale of RADseq data sets, putative loci cannot be assessed individually, making the process of ...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.14792
更新日期:2018-07-10 00:00:00
abstract::Effective population size (N(e)) is a key parameter to understand evolutionary processes and the viability of endangered populations as it determines the rate of genetic drift and inbreeding. Low Ne can lead to inbreeding depression and reduced population adaptability. In this study, we estimated contemporary N(e) usi...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.12770
更新日期:2014-06-01 00:00:00
abstract::Episodes of trans-Arctic faunal exchange and isolation between the north Pacific and Atlantic ocean basins have been implicated as important historic geological events contributing to extant patterns of genetic diversity and structure in Holarctic faunas. We made a further test of the significance of such biogeographi...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294x.1994.tb00057.x
更新日期:1994-06-01 00:00:00
abstract::Hybridization is known to be involved in a number of evolutionary processes, including species formation, and the generation of novel defence characteristics in plants. The genus Senecio of the Asteraceae family is highly speciose and has historically demonstrated significant levels of interspecific hybridization. The...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2004.02235.x
更新日期:2004-08-01 00:00:00
abstract::Biological invasions generally start from low initial population sizes, leading to reduced genetic variation in nuclear and especially mitochondrial DNA. Consequently, genetic approaches for the study of invasion history and population structure are difficult. An extreme example is the Mediterranean fruit fly, Ceratit...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1046/j.1365-294x.1998.00351.x
更新日期:1998-05-01 00:00:00
abstract::The koala, Phascolarctos cinereus, is a geographically widespread species endemic to Australia, with three currently recognized subspecies: P.c. adustus, P.c. cinereus, and P.c. victor. Intraspecific variation in the mitochondrial DNA (mtDNA) control region was examined in over 200 animals from 16 representative popul...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1046/j.1365-294x.1999.00656.x
更新日期:1999-06-01 00:00:00
abstract::Much of the world's terrestrial landscapes are being altered by humans in the form of agriculture, urbanization and pastoral systems, with major implications for biodiversity. Bumble bees are one of the most effective pollinators in both natural and cultivated landscapes, but are often the first to be extirpated in hu...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.13090
更新日期:2015-03-01 00:00:00
abstract::Aspergillus flavus and A. parasiticus are the two most important aflatoxin-producing fungi responsible for the contamination of agricultural commodities worldwide. Both species are heterothallic and undergo sexual reproduction in laboratory crosses. Here we examine the possibility of interspecific matings between A. f...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.13153
更新日期:2015-04-01 00:00:00
abstract::Natural selection, random processes and gene flow are known to generate sex ratio variations among sexually polymorphic plant populations. In gynodioecious species, in which hermaphrodites and females coexist, the relative effect of these processes on the maintenance of sex polymorphism is still up for debate. The aim...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2011.05414.x
更新日期:2012-02-01 00:00:00
abstract::The landscape of the Pilbara region of Western Australia has been relatively unchanged for 100 million years. The ancient river systems of this region might be expected to be sources of isolation and divergence for aquatic species. Hence, the occurrence of widespread groundwater taxa in this landscape offers the oppor...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2006.03123.x
更新日期:2007-01-01 00:00:00
abstract::Experimental evolution (EE) combined with whole-genome sequencing (WGS) has become a compelling approach to study the fundamental mechanisms and processes that drive evolution. Most EE-WGS studies published to date have used microbes, owing to their ease of propagation and manipulation in the laboratory and relatively...
journal_title:Molecular ecology
pub_type: 杂志文章,评审
doi:10.1111/j.1365-294X.2012.05484.x
更新日期:2012-05-01 00:00:00
abstract::The microbiomes of rhizocompartments (nodule endophytes, root endophytes, rhizosphere and root zone) in soya bean and alfalfa were analysed using high-throughput sequencing to investigate the interactions among legume species, microorganisms and soil types. A clear hierarchical filtration of microbiota by plants was o...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.14027
更新日期:2017-03-01 00:00:00
abstract::Knowledge of the role of landscapes in shaping genetic connectivity and divergence is essential for understanding patterns of biogeography and diversity. This is particularly relevant for the Andes region, a major biodiversity hotspot of relatively recent origin. We examined the phylogeography and landscape genetics o...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294x.2008.03853.x
更新日期:2008-08-01 00:00:00
abstract::Understanding connectivity of coral populations among and within reefs over ecologically significant timescales is essential for developing evidence-based management strategies, including the design of marineprotected areas. Here, we present the first assessment of contemporary connectivity among populations of two Mo...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.12539
更新日期:2013-12-01 00:00:00
abstract::Dispersal is a key biological process serving several functions including connectivity among populations. Habitat fragmentation caused by natural or anthropogenic structures may hamper dispersal, thereby disrupting genetic connectivity. Investigating factors affecting dispersal and gene flow is important in the curren...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.15707
更新日期:2020-10-27 00:00:00
abstract::We used a comparative phylogeographical approach to investigate the origins of the disjunct wet forest biota of the Golfo Dulce region along the Pacific slope of Costa Rica. This region is isolated by Pacific dry forests north and south and isolated from Caribbean wet forests by mountains. We studied three sympatric l...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2007.03524.x
更新日期:2007-11-01 00:00:00
abstract::DNA barcoding facilitates many evolutionary and ecological studies, including the examination of the dietary diversity of herbivores. In this study, we present a survey of ecological associations between herbivorous beetles and host plants from seriously threatened European steppic grasslands. We determined host plant...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.13278
更新日期:2015-08-01 00:00:00
abstract::A phylogeny of mainland eastern Australian scrubwrens (Sericornis citreogularis, S. frontalis, S. keri, S. magnirostris and S. beccarii) was constructed using presence or absence of phylogenetically informative restriction sites in 15 mitochondrial DNA (mtDNA) haplotypes. MtDNA sequence divergences between species wer...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294x.1993.tb00105.x
更新日期:1993-06-01 00:00:00
abstract::Hawksbill turtles (Eretmochelys imbricata) migrate between nesting beaches and feeding habitats that are often associated with tropical reefs, but it is uncertain which nesting colonies supply which feeding habitats. To address this gap in hawksbill biology, we compile previously published and new mitochondrial DNA (m...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2006.03096.x
更新日期:2007-01-01 00:00:00
abstract::In plants, pollination syndromes (the correlated presence of many features of relevance to pollination mode, for instance pollination by a particular animal clade) are a striking feature of plant biodiversity, providing great floral phenotypic diversity (Fenster et al. ). Adaptation to a particular animal pollinator p...
journal_title:Molecular ecology
pub_type: 评论,新闻
doi:10.1111/mec.13903
更新日期:2016-12-01 00:00:00
abstract::Sex chromosomes are believed to be stable in endotherms, but young and evolutionary unstable in most ectothermic vertebrates. Within lacertids, the widely radiated lizard group, sex chromosomes have been reported to vary in morphology and heterochromatinization, which may suggest turnovers during the evolution of the ...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.13635
更新日期:2016-07-01 00:00:00
abstract::Studying the evolutionary history of trait divergence, in particular those related to dispersal capacity, is of major interest for the process of local adaptation and metapopulation dynamics. Here, we reconstruct the evolution of different alleles at the nuclear-encoded mitochondrial NADP(+)-dependent isocitrate dehyd...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.13031
更新日期:2015-02-01 00:00:00