Abstract：
:An increasing number of studies describe moving hybrid zones. This raises the issue of their actual frequency and emphasizes the need for methods that enable the detection of zone movements without historical records. Asymmetric introgression, usually considered as a signature of geographical shift, might be misleading when applied to mitochondrial or potentially non-neutral markers. We investigated mitochondrial and genomic introgression, using 30 AFLP derived markers, in a well-documented moving avian contact zone between two warblers. We found no instances of cross-species transmission of mitochondrial DNA but we detected nuclear introgression. Introgression levels were higher in the expanding species. Highest introgression was observed in populations that recently became allopatric than in current sympatric populations, which suggests that alien genetic material mainly spread at the time just before the receding species became extinct. We propose that either local recruitment or positive selection on some loci contribute to this pattern. Furthermore, we propose that, when the rarefaction of sexual partners drive the hybridization process, movement could be revealed by introgression peaking on the rear edge of the moving zone, or in its close vicinity.
journal_name
Mol Ecoljournal_title
Molecular ecologyauthors
Secondi J,Faivre B,Bensch Sdoi
10.1111/j.1365-294X.2006.02948.xsubject
Has Abstractpub_date
2006-08-01 00:00:00pages
2463-75issue
9eissn
0962-1083issn
1365-294Xpii
MEC2948journal_volume
15pub_type
杂志文章abstract：:Genetic divergence among populations arises through natural selection or drift and is counteracted by connectivity and gene flow. In sympatric populations, isolating mechanisms are thus needed to limit the homogenizing effects of gene flow to allow for adaptation and speciation. Chromosomal inversions act as an import...
journal_title：Molecular ecology
pub_type： 杂志文章
doi：10.1111/mec.15010
更新日期：2019-03-01 00:00:00
abstract：:The variation and taxonomic diversity among mammalian gut microbiomes raises several questions about the factors that contribute to the rates and patterns of change in these microbial communities. By comparing the microbiome compositions of 112 species representing 14 mammalian orders, we assessed how host and ecologi...
journal_title：Molecular ecology
pub_type： 杂志文章
doi：10.1111/mec.14473
更新日期：2018-04-01 00:00:00
abstract：:Despite its inherent costs, sexual reproduction is ubiquitous in nature, and the mechanisms to protect it from a competitive displacement by asexuality remain unclear. Popular mutation-based explanations, like the Muller's ratchet and the Kondrashov's hatchet, assume that purifying selection may not halt the accumulat...
journal_title：Molecular ecology
pub_type： 杂志文章
doi：10.1111/mec.15539
更新日期：2020-08-01 00:00:00
abstract：:What makes a species able to colonize novel environments? This question is key to understand the dynamics of adaptive radiations and ecological niche shifts, but the mechanisms that underlie expansion into novel habitats remain poorly understood at a genomic scale. Lizards from the genus Anolis are typically tropical,...
journal_title：Molecular ecology
pub_type： 杂志文章
doi：10.1111/mec.15162
更新日期：2019-08-01 00:00:00
abstract：:Attempts to understand the causes of variation in senescence trajectories would benefit greatly from biomarkers that reflect the progressive declines in somatic integrity (SI) that lead to senescence. While telomere length has attracted considerable interest in this regard, sources of variation in telomere length pote...
journal_title：Molecular ecology
pub_type： 杂志文章
doi：10.1111/mec.15181
更新日期：2019-08-01 00:00:00
abstract：:Several hypotheses are available to predict change in genetic diversity when approaching peripheral populations. We used the eastern spadefoot toad in Israel as a model system to examine these hypotheses using population genetics analyses and network theory. Our results contradicted most of the predictions from the 'a...
journal_title：Molecular ecology
pub_type： 杂志文章
doi：10.1111/j.1365-294X.2010.04712.x
更新日期：2010-07-01 00:00:00
abstract：:The attine ants are a monophyletic lineage that switched to fungus farming ca. 55-60 MYA. They have become a model for the study of complex symbioses after additional fungal and bacterial symbionts were discovered, but their abdominal endosymbiotic bacteria remain largely unknown. Here, we present a comparative microb...
journal_title：Molecular ecology
pub_type： 杂志文章
doi：10.1111/mec.14931
更新日期：2019-02-01 00:00:00
abstract：:Transposable elements are mobile sequences found in nuclear genomes and can potentially serve as molecular markers in various phylogenetic and population genetic investigations. A PCR-based method that utilizes restriction site variation of element copies within a genome is developed. These patterns of site variation,...
journal_title：Molecular ecology
pub_type： 杂志文章
doi：10.1111/j.1365-294x.1995.tb00218.x
更新日期：1995-04-01 00:00:00
abstract：:While microsatellites have been used to examine genetic structure in local populations of Neotropical trees, genetic studies based on such high-resolution markers have not been carried out for Mesoamerica as a whole. Here we assess the genetic structure of the Mesoamerican mahogany Swietenia macrophylla King (big-leaf...
journal_title：Molecular ecology
pub_type： 杂志文章
doi：10.1046/j.1365-294x.2003.01951.x
更新日期：2003-11-01 00:00:00
abstract：:Predicting and controlling infectious disease epidemics is a major challenge facing the management of agriculture, human and wildlife health. Co-evolutionarily derived patterns of local adaptation among pathogen populations have the potential to generate variation in disease epidemiology; however, studies of local ada...
journal_title：Molecular ecology
pub_type： 杂志文章
doi：10.1111/mec.13928
更新日期：2017-04-01 00:00:00
abstract：:The mitochondrial pseudo-control region was analysed in five species of Aquila eagles. Indels caused great length differences in the nonrepetitive part of the region, whereas tandem repeat units were highly conserved among the genus. In a reconstructed phylogenetic tree, the clade formed by A. clanga and A. pomarina s...
journal_title：Molecular ecology
pub_type： 杂志文章
doi：10.1046/j.1365-294x.2002.01578.x
更新日期：2002-10-01 00:00:00
abstract：:Individuals are generally predicted to avoid inbreeding because of detrimental fitness effects. However, several recent studies have shown that limited inbreeding is tolerated by some vertebrate species. Here, we examine the costs and benefits of inbreeding in a largely polygynous rodent, the yellow-bellied marmot (Ma...
journal_title：Molecular ecology
pub_type： 杂志文章
doi：10.1111/j.1365-294X.2011.05389.x
更新日期：2012-02-01 00:00:00
abstract：:Invasive species' success may depend strongly on the genetic resources they maintain through the invasion process. We ask how many introductions have occurred in the North American weed Centaurea stoebe micranthos (Asteraceae), and explore whether genetic diversity and population structure have changed as a result of ...
journal_title：Molecular ecology
pub_type： 杂志文章
doi：10.1111/j.1365-294x.2008.03903.x
更新日期：2008-10-01 00:00:00
abstract：:Intra-specific chloroplast DNA (cpDNA) variation was studied in Sorbus aucuparia L., an entomophilous, mid-or early successional tree producing fleshy fruits. Eight PCR-amplified fragments of the chloroplast genome were screened for restriction fragment length polymorphisms, using one or two 4 bp-cutter restriction en...
journal_title：Molecular ecology
pub_type： 杂志文章
doi：10.1046/j.1365-294x.2000.00977.x
更新日期：2000-08-01 00:00:00
abstract：:The observation that phenotypic convergence and genetic convergence are widespread in nature implies that evolution is at least somewhat predictable. But to what extent and under what circumstances? In other words, how predictable is evolutionary predictability? Answering this question requires going beyond documentin...
journal_title：Molecular ecology
pub_type： 评论,新闻
doi：10.1111/mec.14716
更新日期：2018-06-01 00:00:00
abstract：:Determining the genetic structure of tropical bird populations is important for assessing potential genetic effects of future habitat fragmentation and for testing hypotheses about evolutionary mechanisms promoting diversification. Here we used 10 microsatellite DNA loci to describe levels of genetic differentiation f...
journal_title：Molecular ecology
pub_type： 杂志文章
doi：10.1111/j.1365-294X.2007.03519.x
更新日期：2007-12-01 00:00:00
abstract：:Landscape genetics is an important framework for investigating the influence of spatial pattern on ecological process. Nevertheless, the standard analytic frameworks in landscape genetics have difficulty evaluating hypotheses about spatial processes in dynamic landscapes. We use a predictive hypothesis-driven approach...
journal_title：Molecular ecology
pub_type： 杂志文章
doi：10.1111/j.1365-294X.2009.04226.x
更新日期：2009-07-01 00:00:00
abstract：:In theory, conservation genetics predicts that forest fragmentation will reduce gene dispersal, but in practice, genetic and ecological processes are also dependent on other population characteristics. We used Bayesian genetic analyses to characterize parentage and propagule dispersal in Heliconia acuminata L. C. Rich...
journal_title：Molecular ecology
pub_type： 杂志文章
doi：10.1111/mec.12495
更新日期：2013-11-01 00:00:00
abstract：:It is now common for population geneticists to estimate FST for a large number of loci across the genome, before testing for selected loci as being outliers to the FST distribution. One surprising result of such FST scans is the often high proportion (>1% and sometimes >10%) of outliers detected, and this is often int...
journal_title：Molecular ecology
pub_type： 评论,杂志文章
doi：10.1111/mec.12241
更新日期：2013-04-01 00:00:00
abstract：:Landscape genetics offers a powerful approach to understanding species' dispersal patterns. However, a central obstacle is to account for ecological processes operating at multiple spatial scales, while keeping research outcomes applicable to conservation management. We address this challenge by applying a novel multi...
journal_title：Molecular ecology
pub_type： 杂志文章
doi：10.1111/mec.12359
更新日期：2013-07-01 00:00:00
abstract：:Research on hybridization between species provides unparalleled insights into the pre- and postzygotic isolating mechanisms that drive speciation. In social organisms, colony-level incompatibilities may provide additional reproductive barriers not present in solitary species, and hybrid zones offer an opportunity to i...
journal_title：Molecular ecology
pub_type： 杂志文章
doi：10.1111/mec.13799
更新日期：2016-10-01 00:00:00
abstract：:Organisms often respond to environmental changes by producing alternative phenotypes. Epigenetic processes such as DNA methylation may contribute to environmentally induced phenotypic variation by modifying gene expression. Changes in DNA methylation, unlike DNA mutations, can be influenced by the environment; they ar...
journal_title：Molecular ecology
pub_type： 杂志文章,评审
doi：10.1111/j.1365-294X.2010.04580.x
更新日期：2010-04-01 00:00:00
abstract：:The inevitable has happened: genomic technologies have been added to our noninvasive genetic sampling repertoire. In this issue of Molecular Ecology, Perry et al. (2010) demonstrate how DNA extraction from chimpanzee faeces, followed by a series of steps to enrich for target loci, can be coupled with next-generation s...
journal_title：Molecular ecology
pub_type： 评论,杂志文章
doi：10.1111/j.1365-294X.2010.04889.x
更新日期：2010-12-01 00:00:00
abstract：:The opportunity for a mutation to invade a population can dramatically vary depending on the context in which this mutation occurs. Such context dependence is difficult to document as it requires the ability to measure how a mutation affects phenotypes and fitness and to manipulate the context in which the mutation oc...
journal_title：Molecular ecology
pub_type： 杂志文章
doi：10.1111/j.1365-294X.2010.04664.x
更新日期：2010-06-01 00:00:00
abstract：:Theoretical and empirical studies have shown that species radiations are facilitated when a trait under divergent natural selection is also involved in sexual selection. It is yet unclear how quick and effective radiations are where assortative mating is unrelated to the ecological environment and primarily results fr...
journal_title：Molecular ecology
pub_type： 杂志文章
doi：10.1111/mec.15695
更新日期：2020-12-01 00:00:00
abstract：:Modes and mechanisms of speciation are best studied in young species pairs. In older taxa, it is increasingly difficult to distinguish what happened during speciation from what happened after speciation. Lake Victoria cichlids in the genus Pundamilia encompass a complex of young species and polymorphic populations. On...
journal_title：Molecular ecology
pub_type： 杂志文章
doi：10.1111/mec.13838
更新日期：2017-01-01 00:00:00
abstract：:Genetic variation is of key importance for a species' evolutionary potential, and its estimation is a major component of conservation studies. New DNA sequencing technologies have enabled the analysis of large portions of the genome in nonmodel species, promising highly accurate estimates of such population genetic pa...
journal_title：Molecular ecology
pub_type： 杂志文章
doi：10.1111/mec.12636
更新日期：2014-02-01 00:00:00
abstract：:One of the major environmental concerns over genetically modified (GM) crops relates to transgene movement into wild relatives. The pattern of hybridization ultimately affects the scale and rapidity of ecological change and the feasibility of containment. A new procedure for quantifying hybrid formation over large are...
journal_title：Molecular ecology
pub_type： 杂志文章
doi：10.1046/j.1365-294x.2000.00986.x
更新日期：2000-07-01 00:00:00
abstract：:Convergent phenotypes are testament to the role of natural selection in evolution. However, little is known about whether convergence in phenotype extends to convergence at the molecular level. We use the independent losses of floral anthocyanins in columbines (Aquilegia) to determine the degree of molecular convergen...
journal_title：Molecular ecology
pub_type： 杂志文章
doi：10.1111/j.1365-294X.2006.03114.x
更新日期：2006-12-01 00:00:00
abstract：:The spatial genetic structure of the neotropical, clustered tree species Vouacapoua americana (Aublet) was studied in two natural forest stands (Paracou and Nouragues) in French Guiana. Using eight microsatellite loci, V. americana is characterized by a marked genetic structure at small spatial distances (under 30-60 ...
journal_title：Molecular ecology
pub_type： 杂志文章
doi：10.1046/j.1365-294x.2002.01475.x
更新日期：2002-04-01 00:00:00
