Abstract:
:Mounting evidence suggests that average telomere length reflects previous stress and predicts subsequent survival across vertebrate species. In humans, leucocyte telomere length (LTL) is consistently shorter during adulthood in males than in females, although the causes of this sex difference and its generality to other mammals remain unknown. Here, we measured LTL in a cross-sectional sample of free-living Soay sheep and found shorter telomeres in males than in females in later adulthood (>3 years of age), but not in early life. This observation was not related to sex differences in growth or parasite burden, but we did find evidence for reduced LTL associated with increased horn growth in early life in males. Variation in LTL was independent of variation in the proportions of different leucocyte cell types, which are known to differ in telomere length. Our results provide the first evidence of sex differences in LTL from a wild mammal, but longitudinal studies are now required to determine whether telomere attrition rates or selective disappearance are responsible for these observed differences.
journal_name
Mol Ecoljournal_title
Molecular ecologyauthors
Watson RL,Bird EJ,Underwood S,Wilbourn RV,Fairlie J,Watt K,Salvo-Chirnside E,Pilkington JG,Pemberton JM,McNeilly TN,Froy H,Nussey DHdoi
10.1111/mec.13992subject
Has Abstractpub_date
2017-06-01 00:00:00pages
3230-3240issue
12eissn
0962-1083issn
1365-294Xjournal_volume
26pub_type
杂志文章abstract::Christmas Island is located at the overlap of the Indian and Pacific Ocean marine provinces and is a hot spot for marine hybridization. Here, we evaluate the ecological framework and genetic consequences of hybridization between butterflyfishes Chaetodon guttatissimus and Chaetodon punctatofasciatus. Further, we compa...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.12762
更新日期:2014-06-01 00:00:00
abstract::A considerable fraction of the world's biodiversity is of recent evolutionary origin and has evolved as a by-product of, and is maintained by, divergent adaptation in heterogeneous environments. Conservationists have paid attention to genetic homogenization caused by human-induced translocations (e.g. biological invas...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2007.03529.x
更新日期:2008-01-01 00:00:00
abstract::Variation of DNA methylation is thought to play an important role for rapid adjustments of plant populations to dynamic environmental conditions, thus compensating for the relatively slow response time of genetic adaptations. However, genetic and epigenetic variation of wild plant populations has not yet been directly...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.12835
更新日期:2014-07-01 00:00:00
abstract::Analysis of mitochondrial (mt)DNA size polymorphism in the form of variable number tandem repeats (mtVNTRs) has become an increasingly popular methodology for addressing questions in molecular ecology. When detected by PCR, mtVNTR analysis can provide a sensitive, rapid, and cost-effective measure of genetic variabili...
journal_title:Molecular ecology
pub_type: 杂志文章,评审
doi:10.1046/j.1365-294x.1998.00495.x
更新日期:1998-11-01 00:00:00
abstract::We studied population polymorphism at a major histocompatibility complex (MHC) class II beta gene in the deer mouse (Peromyscus maniculatus). We found that: (i) a single population of P. maniculatus has significantly higher levels of DNA and protein sequence diversity than worldwide samples from homologous genes in ot...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1046/j.0962-1083.2001.01402.x
更新日期:2001-12-01 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::Genome reduction is a general process that has been studied in numerous symbiotic bacteria associated with insects. We investigated the last stages of genome degradation in Blochmannia floridanus, a mutualistic bacterial endosymbiont of the ant Camponotus floridanus. We determined the tempo (rates of insertion and del...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294x.2008.03912.x
更新日期:2008-10-01 00:00:00
abstract::Pleistocene ice-ages greatly influenced the historical abundances of Pacific cod, Gadus macrocephalus, in the North Pacific and its marginal seas. We surveyed genetic variation at 11 microsatellite loci and mitochondrial (mt) DNA in samples from twelve locations from the Sea of Japan to Washington State. Both microsat...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2010.04815.x
更新日期:2010-10-01 00:00:00
abstract::We investigated the use of PCR primers designed to conserved exons within nuclear DNA to amplify potentially variable regions such as introns or hypervariable exons from a wide range of species. We then explored various approaches to assay population-level variation in these PCR products. Primers designed to amplify r...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294x.1993.tb00029.x
更新日期:1993-12-01 00:00:00
abstract::We reanalysed published data to evaluate whether climate and habitat are barriers to dispersal in one of the most mobile and widely distributed mammals, the grey wolf (Canis lupus). Distance-based redundancy analysis (dbRDA) was used to examine the amount of variation in genetic distances that could be explained by an...
journal_title:Molecular ecology
pub_type: 杂志文章,meta分析
doi:10.1111/j.1365-294X.2004.02244.x
更新日期:2004-08-01 00:00:00
abstract::We investigated the genetic structure and variation of 21 populations of cattle (Bos taurus) in northern Eurasia and the neighbouring Near Eastern regions of the Balkan, the Caucasus and Ukraine employing 30 microsatellite markers. By analyses of population relationships, as well as by a Bayesian-based clustering appr...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2007.03437.x
更新日期:2007-09-01 00:00:00
abstract::Recent studies that reveal a correlation between heterozygosity and fitness in natural populations have rekindled interest in whether balancing selection is widespread or an evolutionary oddity. We therefore quantified heterozygote advantage at 12 microsatellite markers in both inbred and outbred crosses of Drosophila...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2006.03093.x
更新日期:2006-11-01 00:00:00
abstract::The level of integration between associated partners can range from ectosymbioses to extracellular and intracellular endosymbioses, and this range has been assumed to reflect a continuum from less intimate to evolutionarily highly stable associations. In this study, we examined the specificity and evolutionary history...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.13554
更新日期:2016-07-01 00:00:00
abstract::Although resolving phylogenetic relationships and establishing species limits are primary goals of systematics, these tasks remain challenging at both conceptual and analytical levels. Here, we integrated genomic and phenotypic data and employed a comprehensive suite of coalescent-based analyses to develop and evaluat...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.14504
更新日期:2018-03-01 00:00:00
abstract::In vertebrates, the genes of the major histocompatibility complex (MHC) are among the most debated candidates accounting for co-evolutionary processes of host-parasite interaction at the molecular level. The exceptionally high allelic polymorphism found in MHC loci is believed to be maintained by pathogen-driven selec...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2005.02557.x
更新日期:2005-06-01 00:00:00
abstract::Theory suggests that speciation is possible without physical isolation of populations (hereafter, nonallopatric speciation), but recent nonallopatric models need the support of irrefutable empirical examples. We collected snails (Littorina saxatilis) from three areas on the NW coast of Spain to investigate the populat...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2004.02330.x
更新日期:2004-11-01 00:00:00
abstract::Spatially overdispersed mounds of fungus-farming termites (Macrotermitinae) are hotspots of nutrient availability and primary productivity in tropical savannas, creating spatial heterogeneity in communities and ecosystem functions. These termites influence the local availability of nutrients in part by redistributing ...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.15585
更新日期:2020-11-01 00:00:00
abstract::During the process of ecological speciation, reproductive isolation results from divergent natural selection and leads to a positive correlation between genetic divergence and adaptive phenotypic divergence, that is, isolation by adaptation (IBA). In natural populations, phenotypic differentiation is often autocorrela...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.14429
更新日期:2018-01-01 00:00:00
abstract::Recent molecular studies have shown that highly mobile species with continuous distributions can exhibit fine-scale population structure. In this context, we assessed genetic structure within a marine species with high dispersal potential, the Atlantic spotted dolphin (Stenella frontalis). Using 19 microsatellite loci...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.12923
更新日期:2014-10-01 00:00:00
abstract::The spread of transgenes into the genome of wild soybean is a concern when transgenic and wild soybeans are planted sympatrically. The objectives of this study were to investigate the origin and fate of morphological intermediates between wild and cultivated soybeans in their natural habitats in Japan. Twenty nuclear ...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2010.04636.x
更新日期:2010-06-01 00:00:00
abstract::Army ants have long been suspected to represent an independent origin of multiple queen-mating in the social Hymenoptera. Using microsatellite markers, we show that queens of the African army ant Dorylus (Anomma) molestus have the highest absolute (17.3) and effective (17.5) queen-mating frequencies reported so far fo...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2004.02262.x
更新日期:2004-08-01 00:00:00
abstract::Hypotheses of diversification in eastern North American freshwater fishes have focused primarily on allopatric distributions of species between disjunct highland areas and major river systems. However, these hypotheses do not fully explain the rich diversity of species within highland regions and river systems. Relati...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2010.04866.x
更新日期:2010-11-01 00:00:00
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journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.13680
更新日期:2016-07-01 00:00:00
abstract::Norway spruce (Picea abies [L.] Karst.) is a broadly distributed European conifer tree whose history has been intensively studied by means of fossil records to infer the location of full-glacial refugia and the main routes of postglacial colonization. Here we use recently compiled fossil pollen data as a template to e...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294x.2008.03893.x
更新日期:2008-09-01 00:00:00
abstract::Abstract Microsatellites are powerful molecular markers, used commonly to estimate intraspecific genetic distances. With the exception of band sharing similarity index, available distance measures were developed specifically for diploid organisms and are unsuited for comparisons of polyploids. Here, we present a simpl...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2004.02209.x
更新日期:2004-07-01 00:00:00
abstract::We investigated the genetic outcome of successful invasion by an alien species, the marsh frog Rana ridibunda, in Britain. Twelve adults translocated from Hungary into Kent (Romney) in 1935 resulted rapidly in a large localized population. A further successful translocation in 1973 from Romney to Sussex (Lewes), toget...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1046/j.1365-294x.2003.01775.x
更新日期:2003-03-01 00:00:00
abstract::Analysis of mitochondrial DNA sequence variation has been used extensively to study the evolutionary relationships of individuals and populations, both within and across species. So ubiquitous and easily acquired are mtDNA data that it has been suggested that such data could serve as a taxonomic 'barcode' for an objec...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1046/j.1365-294x.2003.02070.x
更新日期:2004-02-01 00:00:00
abstract::Avian wing length is an important trait that covaries with the ecology and migratory behaviour of a species and tends to change rapidly when the conditions are altered. Long-distance migrants typically have longer wings than short-distance migrants and sedentary species, and long-winged species also tend to be more di...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2011.05365.x
更新日期:2012-01-01 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::As modern genomic tools are developed for ecologically compelling models, field manipulation experiments will become important for establishing the role of functional genomic variation in physiological acclimation and evolutionary adaptation along environmental clines. High-altitude habitats expose individuals to hypo...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2008.03942.x
更新日期:2008-10-01 00:00:00