Abstract:
:Species are impacted by climate change at both ecological and evolutionary time scales. Studies in northern continents have provided abundant evidence of dramatic shifts in distributions of species subsequent to the last glacial maximum (LGM), particularly at high latitudes. However, little is known about the history of southern continents, especially at high latitudes. South America is the only continent, other than Antarctica, that extends beyond 40 degrees S. Genetic studies of a few Patagonian species have provided seemingly conflicting results, indicating either postglacial colonization from restricted glacial refugia or persistence through glacial cycles and in situ differentiation. Using mitochondrial DNA sequences of 14 species of sigmodontine rodents, a major faunal ensemble of Patagonia and Tierra del Fuego, we show that at least nine of these species bear genetic footprints of demographic expansion from single restricted sources. However, timing of demographic expansion precedes the LGM in most of these species. Four species are fragmented phylogeographically within the region. Our results indicate that (i) demographic instability in response to historical climate change has been widespread in the Patagonian-Fueguian region, and is generally more pronounced at high latitudes in both southern and northern continents; (ii) colonization from lower latitudes is an important component of current Patagonian-Fueguian diversity; but (iii) in situ differentiation has also contributed to species diversity.
journal_name
Mol Ecoljournal_title
Molecular ecologyauthors
Lessa EP,D'Elía G,Pardiñas UFdoi
10.1111/j.1365-294X.2010.04734.xsubject
Has Abstractpub_date
2010-08-01 00:00:00pages
3031-7issue
15eissn
0962-1083issn
1365-294Xpii
MEC4734journal_volume
19pub_type
杂志文章abstract::Since 2005, advances in next-generation sequencing technologies have revolutionized biological science. The analysis of environmental DNA through the use of specific gene markers such as species-specific DNA barcodes has been a key application of next-generation sequencing technologies in ecological and environmental ...
journal_title:Molecular ecology
pub_type: 杂志文章,评审
doi:10.1111/j.1365-294X.2012.05538.x
更新日期:2012-04-01 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::A new polymerase chain reaction-based screening method for microsatellites is presented. Using this method, we isolated 12 microsatellite loci from Drosophila buzzatii, two of which were X-linked. We applied the other 10 microsatellite loci to the analysis of genetic variation in five natural populations of D. buzzati...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1046/j.1365-294x.2002.01428.x
更新日期:2002-02-01 00:00:00
abstract::Nonrandom mating can structure populations and has important implications for population-level processes. Investigating how and why mating deviates from random is important for understanding evolutionary processes as well as informing conservation and management. Prior to the implementation of parentage analyses, unde...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.13290
更新日期:2015-08-01 00:00:00
abstract::Discordance between the mitochondrial and nuclear genomes is a prevalent phenomenon in nature, in which the underlying processes responsible are considered to be important in shaping genetic variation in natural populations. Among the evolutionary processes that best explain such genomic mismatches incomplete lineage ...
journal_title:Molecular ecology
pub_type: 评论,杂志文章
doi:10.1111/mec.15568
更新日期:2020-09-01 00:00:00
abstract::Antagonistic co-evolution between hosts and parasites can lead to local adaptation (LA) such that parasite fitness is greatest in sympatric hosts (or vice versa). The magnitude of LA typically increases with geographical distance, which is assumed to be because genetic (and hence phenotypic) distance increases with ge...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.13897
更新日期:2017-04-01 00:00:00
abstract::Niche partitioning through foraging is a mechanism likely involved in facilitating the coexistence of ecologically similar and co-occurring animal species by separating their use of resources. Yet, this mechanism is not well understood in flying insectivorous animals. This is particularly true of bats, where many ecol...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.14508
更新日期:2018-03-01 00:00:00
abstract::Interspecific mutualism can evolve when specific lineages of different species tend to be associated with each other from one generation to the next. Different maternally transmitted endosymbionts occurring within the same cytoplasmic lineage fulfil this requirement. Drosophila neotestacea is infected with maternally ...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2009.04448.x
更新日期:2010-01-01 00:00:00
abstract::Many species of malaria and related haemosporidian parasites (Haemosporida) are responsible for diseases in wild and domestic animals. These pathogens are exclusively transmitted by blood-sucking dipteran insects (Diptera). Traditional vector studies, which are based mainly on experimental infection and subsequent dis...
journal_title:Molecular ecology
pub_type: 评论,杂志文章
doi:10.1111/j.1365-294x.2011.05187.x
更新日期:2011-08-01 00:00:00
abstract::Genetic diversity and its partition within and among populations and families of two species of Antirrhinum L., A. charidemi Lange and A. valentinum F.Q., have been studied. Both species are narrow-range endemics, self-incompatible, ecologically specialized and form small isolated populations. Despite these similariti...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1046/j.1365-294x.2000.01119.x
更新日期:2000-12-01 00:00:00
abstract::Palaeoclimatic events and biogeographical processes since the mid-Tertiary are believed to have strongly influenced the evolution and distribution of the terrestrial vertebrate fauna of southeastern Australia. We examined the phylogeography of the temperate-adapted members of the Egernia whitii species group, a group ...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2005.02463.x
更新日期:2005-04-01 00:00:00
abstract::Cysteine plays essential biological roles, but excessive amounts produce cellular oxidative stress. Cysteine metabolism is mainly mediated by the enzymes cysteine dioxygenase and γ-glutamylcysteine synthetase, respectively coded by the genes CDO1 and GCLC. Here we test a new hypothesis posing that the synthesis of the...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.15024
更新日期:2019-03-01 00:00:00
abstract::Aside from its selective role in filtering inter-individual variation during evolution by natural selection, the environment also plays an instructive role in producing variation during development. External environmental cues can influence developmental rates and/or trajectories and lead to the production of distinct...
journal_title:Molecular ecology
pub_type: 杂志文章,评审
doi:10.1111/j.1365-294X.2011.05016.x
更新日期:2011-04-01 00:00:00
abstract::The relationships between parasites and their hosts are intimate, dynamic and complex; the evolution of one is inevitably linked to the other. Despite multiple origins of parasitism in the Cnidaria, only parasites belonging to the Myxozoa are characterized by a complex life cycle, alternating between fish and inverteb...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.14558
更新日期:2018-04-01 00:00:00
abstract::Understanding how phenotypic variation is generated and maintained, and the evolutionary forces that shape these processes is the main goal of evolutionary biology. Great progress has been made in uncovering the genetic basis of morphological diversity, yet little is known about both the genetics and developmental bas...
journal_title:Molecular ecology
pub_type: 评论,新闻
doi:10.1111/mec.14099
更新日期:2017-05-01 00:00:00
abstract::Comparisons among patterns exhibited by functionally distinct genetic markers have been widely used to infer the impacts of demography and selection in structuring genetic variation in natural populations. However, such multilocus comparisons remain an indirect evaluation of selection at particular candidate loci; ide...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2007.03323.x
更新日期:2007-06-01 00:00:00
abstract::Clonal populations are often characterized by reduced levels of genotypic diversity, which can translate into lower numbers of functional phenotypes, both of which impede adaptation. Study of partially clonal animals enables examination of the environmental settings under which clonal reproduction is favoured. Here, w...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.14165
更新日期:2017-08-01 00:00:00
abstract::Chytridiomycosis is a recently identified fungal disease associated with global population declines of frogs. Although the fungus, Batrachochytrium dendrobatidis, is considered an emerging pathogen, little is known about its population genetics, including the origin of the current epidemic and how this relates to the ...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1046/j.1365-294x.2003.01732.x
更新日期:2003-02-01 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::Adaptive ecological differentiation among sympatric populations is promoted by environmental heterogeneity, strong local selection and restricted gene flow. High gene flow, on the other hand, is expected to homogenize genetic variation among populations and therefore prevent local adaptation. Understanding how local a...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.12181
更新日期:2013-03-01 00:00:00
abstract::A whole-genome duplication (WGD) doubles the entire genomic content of a species and is thought to have catalysed adaptive radiation in some polyploid-origin lineages. However, little is known about general consequences of a WGD because gene duplicates (i.e., paralogs) are commonly filtered in genomic studies; such fi...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.14201
更新日期:2017-09-01 00:00:00
abstract::Host-parasite relationships are likely to change over the coming decades in response to climate change and increased anthropogenic stressors. Understanding the genetic architecture of parasite resistance will aid prediction of species' responses to intensified parasite challenge. The gapeworm "Syngamus trachea" is pre...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.15491
更新日期:2020-10-01 00:00:00
abstract::Studies examining the effects of anthropogenic habitat fragmentation on both neutral and adaptive genetic variability are still scarce. We compared tadpole fitness-related traits (viz. survival probability and body size) among populations of the common frog (Rana temporaria) from fragmented (F) and continuous (C) habi...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2007.03357.x
更新日期:2007-07-01 00:00:00
abstract::The theory of classical and cryptic Pleistocene refugia is based mainly on historical changes in temperature, and the refugia are usually defined within a latitudinal gradient. However, the gradient of oceanic-continental climate (i.e. longitudinal) was also significantly variable during glacial cycles with important ...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.12382
更新日期:2013-08-01 00:00:00
abstract::Mitochondrial DNA sequence data for 295 individuals of the marine bivalve Macoma balthica (L.) were collected from 10 sites across the European distribution, and from Alaska. The data were used to infer population subdivision history and estimate current levels of gene flow. Inferred historical biogeography was expect...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1046/j.1365-294x.2003.01872.x
更新日期:2003-08-01 00:00:00
abstract::Inbreeding is common in small and threatened populations and often has a negative effect on individual fitness and genetic diversity. Thus, inbreeding can be an important factor affecting the persistence of small populations. In this study, we investigated the effects of inbreeding on fitness in a small, wild populati...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2012.05490.x
更新日期:2012-03-01 00:00:00
abstract::The savannah biome of sub-Saharan Africa harbours the highest diversity of ungulates (hoofed mammals) on Earth. In this review, we compile population genetic data from 19 codistributed ungulate taxa of the savannah biome and find striking concordance in the phylogeographic structuring of species. Data from across taxa...
journal_title:Molecular ecology
pub_type: 杂志文章,评审
doi:10.1111/j.1365-294X.2012.05650.x
更新日期:2012-08-01 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::Oryza rufipogon Griff. is the most agriculturally important but seriously endangered wild rice species. To better estimate how genetic structure can be used to obtained a conservation perspective of the species, genetic variability at six polymorphic microsatellite DNA loci was examined. High levels of genetic variabi...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2004.02108.x
更新日期:2004-05-01 00:00:00
abstract::Habitat fragmentation represents the single most serious threat to the survival of tropical ecosystems. In formulating strategies to counteract the detrimental effects of fragmentation, knowledge of the levels and patterns of genetic diversity within and between natural populations is vital to the establishment of any...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1046/j.1365-294x.2003.01991.x
更新日期:2003-12-01 00:00:00