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) using genetic estimators (LDNE, ONeSAMP, MLNE and CoNe) as well as a demographic estimator in a natural insular house sparrow metapopulation. We investigated whether population characteristics (population size, sex ratio, immigration rate, variance in population size and population growth rate) explained variation within and among populations in the ratio of effective to census population size (N(e)/N(c)). In general, N(e)/N(c) ratios increased with immigration rates. Genetic N(e) was much larger than demographic N(e), probably due to a greater effect of immigration on genetic than demographic processes in local populations. Moreover, although estimates of genetic N(e) seemed to track N(c) quite well, the genetic N(e) -estimates were often larger than Nc within populations. Estimates of genetic N(e) for the metapopulation were however within the expected range ( journal_name journal_title authors doi subject pub_date pages issue eissn issn journal_volume pub_type
abstract::Population studies have revealed that the fungal ectomycorrhizal morphospecies Tricholoma scalpturatum consists of at least two genetically distinct groups that occur sympatrically in several geographical areas. This discovery prompted us to examine species boundaries and relationships between members formerly assigne...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2010.04863.x
更新日期:2010-12-01 00:00:00
abstract::Random amplified polymorphic DNA (RAPD) fragments were prepared from samples of Calonectris diomedea (Cory's shearwater, Aves) and Haemonchus contortus (Nematoda) DNA by polymerase chain reaction (PCR) using decamers containing two restriction enzyme sites as primers. Six of 19 studied RAPD fragments probably originat...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1046/j.1365-294x.1999.00605.x
更新日期:1999-03-01 00:00:00
abstract::New methods for better identification of timber geographical origin would constitute an important technical element in the forest industry, for phytosanitary certification procedures or in the chain of custody developed for the certification of timber from sustainably managed forests. In the case of the European white...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1046/j.1365-294x.2003.01836.x
更新日期:2003-06-01 00:00:00
abstract::Spatial population structure has important ecological and evolutionary consequences. Little is known about the population structure of snowshoe hares (Lepus americanus), despite their ecological importance in North American boreal forests. We used seven variable microsatellite DNA loci to determine the spatial genetic...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1046/j.1365-294x.2002.01566.x
更新日期:2002-09-01 00:00:00
abstract::Hybrid zones are important windows into ecological and evolutionary processes. Our understanding of the significance and prevalence of hybridization in nature has expanded with the generation and analysis of genome-spanning data sets. That said, most hybridization research still has restricted temporal and spatial res...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.15514
更新日期:2020-08-01 00:00:00
abstract::The majority of achlorophyllous mycoheterotrophic plant species associate with arbuscular mycorrhizal fungi (AMF). Previous studies have shown that some species are highly specialized towards narrow lineages of AMF and have suggested that only particular lineages of these fungi are targeted by mycoheterotrophic plants...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2012.05472.x
更新日期:2012-03-01 00:00:00
abstract::Accurate detection of offspring resulting from hybridization between individuals of distinct populations has a range of applications in conservation and population genetics. We assessed the hybrid identification efficiency of two methods (implemented in the STRUCTURE and NEWHYBRIDS programs) which are tailored to iden...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2005.02773.x
更新日期:2006-01-01 00:00:00
abstract::Determining how genetic diversity is structured between populations that span the divergence continuum from populations to biological species is key to understanding the generation and maintenance of biodiversity. We investigated genetic divergence and gene flow in eight lineages of birds with a trans-Beringian distri...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.15574
更新日期:2020-09-01 00:00:00
abstract::We studied the physiological basis of local adaptation to drought in Boechera holboellii, a perennial relative of Arabidopsis thaliana, and used cDNA-AFLPs to identify candidate genes showing differential expression in these populations. We compared two populations of B. holboellii from contrasting water environments ...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2006.02818.x
更新日期:2006-04-01 00:00:00
abstract::It has been long recognized that population demographic expansions lead to distinctive features in the molecular diversity of populations. However, recent simulation results have suggested that a distinction could be made between a pure demographic expansion in an unsubdivided population, and a range expansion in a su...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1046/j.1365-294x.2003.02004.x
更新日期:2004-04-01 00:00:00
abstract::To understand the success of invasive species, it is important to know whether colonization events are facilitated by adaptive evolution or are limited to sites where a species is pre-adapted to thrive. Studies of the ancient colonization patterns of an invader in its native range provide an opportunity to examine its...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2007.03508.x
更新日期:2007-10-01 00:00:00
abstract::American marten (Martes americana) have a close association with mature temperate forests, a habitat that expanded throughout the Pacific Northwest as glaciers receded at the end of the Pleistocene. Similar to several other forest-associated mammals in North America (e.g. black bear), genetic analysis of the marten sh...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1046/j.1365-294x.2003.01720.x
更新日期:2003-01-01 00:00:00
abstract::Geographical isolation, habitat variation and trophic specialization have contributed to a large extent to the astonishing diversity of cichlid fishes in the Great East African lakes. Because parasite communities often vary across space and environments, parasites can accompany and potentially enhance cichlid species ...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.13833
更新日期:2016-11-01 00:00:00
abstract::Highly expressed proteins can exhibit relatively small material costs, in terms of the quantities of carbon (C), nitrogen (N) or sulphur (S) atoms they contain. This 'elemental sparing' probably reflects selection to reduce the quantities of potentially growth-limiting elements in abundant proteins, but the evolutiona...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2012.05529.x
更新日期:2012-05-01 00:00:00
abstract::Phylogenetic analyses of ancient DNA data can provide a timeline for evolutionary change even in the absence of fossils. The power to infer the evolutionary rate is, however, highly dependent on the number and age of samples, the information content of the sequence data and the demographic history of the sampled popul...
journal_title:Molecular ecology
pub_type: 评论,杂志文章
doi:10.1111/mec.12621
更新日期:2014-02-01 00:00:00
abstract::Isolation by adaptation increases divergence at neutral loci when natural selection against immigrants reduces the rate of gene flow between different habitats. This can occur early in the process of adaptive divergence and is a key feature of ecological speciation. Despite the ability of isolation by distance (IBD) a...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2012.05454.x
更新日期:2012-05-01 00:00:00
abstract::Global warming has had numerous effects on populations of animals and plants, with many species in temperate regions experiencing environmental change at unprecedented rates. Populations with low potential for adaptive evolutionary change and plasticity will have little chance of persistence in the face of environment...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2007.03436.x
更新日期:2008-01-01 00:00:00
abstract::Antarctic ecosystems are dominated by micro-organisms, and viruses play particularly important roles in the food webs. Since the first report in 2009 (López-Bueno et al. ), 'omic'-based studies have greatly enlightened our understanding of Antarctic aquatic microbial diversity and ecosystem function (Wilkins et al. ; ...
journal_title:Molecular ecology
pub_type: 评论,杂志文章
doi:10.1111/mec.13387
更新日期:2015-10-01 00:00:00
abstract::The increasing rate of biological invasions resulting from human transport or human-mediated changes to the environment has had devastating ecological and public health consequences. The kissing bug, Triatoma infestans, has dispersed through the Peruvian city of Arequipa. The biological invasion of this insect has res...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.12471
更新日期:2013-10-01 00:00:00
abstract::Carrion beetles (Coleoptera, Silphidae) are well known for their behaviour of exploiting vertebrate carcasses for nutrition. While species in the subfamily Silphinae feed on large carcasses and on larvae of competing scavengers, the Nicrophorinae are unique in monopolizing, burying and defending small carrion, and pro...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.12469
更新日期:2014-03-01 00:00:00
abstract::Spatial and environmental heterogeneity are major factors in structuring species distributions in alpine landscapes. These landscapes have also been affected by glacial advances and retreats, causing alpine taxa to undergo range shifts and demographic changes. These nonequilibrium population dynamics have the potentia...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2012.05696.x
更新日期:2012-09-01 00:00:00
abstract::Freshwater planarians Dugesia japonica from three localities were examined for cytochrome c oxidase subunit I (COI) gene sequence, karyotype and the presence of genital organ. The planarians from Mt Fujiwara in Japan were composed of two different groups; one revealed inter- and intraindividual COI gene heterogeneity,...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1046/j.1365-294x.1997.00162.x
更新日期:1997-02-01 00:00:00
abstract::It is challenging to unravel the history of organisms with highly scattered populations. Such species may have fragmented distributions because extant populations are remnants of a previously more continuous range, or because the species has narrow habitat requirements in combination with good dispersal capacity (natu...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.12313
更新日期:2013-06-01 00:00:00
abstract::Understanding the spatial scale at which selection acts upon adaptive genetic variation in natural populations is fundamental to our understanding of evolutionary ecology, and has important ramifications for conservation. The environmental factors to which individuals of a population are exposed can vary at fine spati...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.13759
更新日期:2016-09-01 00:00:00
abstract::Species may often exhibit geographic variation in population genetic structure due to contemporary and historical variation in population size and gene flow. Here, we test the predictions that populations on the margins of a species' distribution contain less genetic variation and are more differentiated than populati...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2007.03241.x
更新日期:2007-04-01 00:00:00
abstract::Ecologists are increasingly interested in quantifying consumer diets based on food DNA in dietary samples and high-throughput sequencing of marker genes. It is tempting to assume that food DNA sequence proportions recovered from diet samples are representative of consumer's diet proportions, despite the fact that capt...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.12523
更新日期:2014-08-01 00:00:00
abstract::The role of hybridization and subsequent introgression has been demonstrated in an increasing number of species. Recently, Fontaine et al. (Science, 347, 2015, 1258524) conducted a phylogenomic analysis of six members of the Anopheles gambiae species complex. Their analysis revealed a reticulate evolutionary history a...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.13544
更新日期:2016-06-01 00:00:00
abstract::The molecular phylogeography of Microtus longicaudus was investigated with DNA sequences of the mitochondrial cytochrome b gene. We used phylogenetic and pairwise distance methods to reconstruct the history of the species with particular emphasis on the Pacific Northwest. Genetic variation across the species was consi...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1046/j.1365-294x.2000.00846.x
更新日期:2000-02-01 00:00:00
abstract::Understanding the factors that maintain genetic variation in natural populations is a foundational goal of evolutionary biology. To this end, population geneticists have developed a variety of models that can produce stable polymorphisms. In one of the earliest models, Owen () demonstrated that differences in selectio...
journal_title:Molecular ecology
pub_type: 评论,新闻
doi:10.1111/mec.14787
更新日期:2018-09-01 00:00:00
abstract::Biological invasions that involve well-documented rapid adaptations to new environments provide unequalled opportunities for testing evolutionary hypotheses. Mikania micrantha Kunth (Asteraceae), a perennial herbaceous vine native to tropical Central and South America, successfully invaded tropical Asia in the early 2...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.14124
更新日期:2017-07-01 00:00:00