abstract：:Although it is generally expected that inbreeding would lower fitness, few studies have directly quantified the effects of inbreeding in wild mammals. We investigated the effects of inbreeding using long-term data from bighorn sheep on Ram Mountain, Alberta, Canada, over 20 years. This population underwent a drastic d...

journal_title：Journal of evolutionary biology

authors： Rioux-Paquette E,Festa-Bianchet M,Coltman DW

更新日期：2011-01-01 00:00:00

abstract：:Decades of experiments have demonstrated the ecological effect of competition, but experimental evidence for competitive effects on trait evolution is rare. I measured the evolution of six protozoan traits in response to competitors from the inquiline community of pitcher plants. Replicate populations of Colpoda, a ci...

journal_title：Journal of evolutionary biology

authors： terHorst CP

更新日期：2011-01-01 00:00:00

abstract：:Polyembryonic encyrtid wasps are parasitoids that have evolved a clonal form of embryogenesis and a caste system where some progeny become reproducing wasps whereas others develop into a sterile soldier caste. Theory based on the biology of Copidosoma floridanum predicts that the primary role of soldier larvae is to m...

journal_title：Journal of evolutionary biology

authors： Smith MS,Milton I,Strand MR

更新日期：2010-12-01 00:00:00

abstract：:Because pollinators are unable to directly assess the amount of rewards offered by flowers, they rely on the information provided by advertising floral traits. Thus, having a lower intra-individual correlation between signal and reward (signal accuracy) than other plants in the population provides the opportunity to r...

journal_title：Journal of evolutionary biology

authors： Benitez-Vieyra S,Ordano M,Fornoni J,Boege K,Domínguez CA

更新日期：2010-12-01 00:00:00

abstract：:Natural selection ultimately acts on genes and other DNA sequences. Adaptations that are good for the gene can have adverse effects at higher levels of organization, including the individual or the population. Mobile genetic elements illustrate this principle well, because they can self-replicate within a genome at a ...

journal_title：Journal of evolutionary biology

authors： Rankin DJ,Bichsel M,Wagner A

更新日期：2010-11-01 00:00:00

abstract：:Many organisms modify their physiological functions by acclimating to changes in their environment. Recent studies of thermal physiology have been influenced by verbal models that fail to consider the selective advantage of acclimation and thus make no predictions about variation in acclimation capacity. We used a qua...

journal_title：Journal of evolutionary biology

authors： Cooper BS,Czarnoleski M,Angilletta MJ Jr

更新日期：2010-11-01 00:00:00

abstract：:Natural populations often show genetic variation in parasite resistance, forming the basis for evolutionary response to selection imposed by parasitism. We investigated whether previous epidemics selected for higher resistance to novel parasite isolates in a Daphnia galeata-microparasite system by comparing susceptibi...

journal_title：Journal of evolutionary biology

authors： Schoebel CN,Wolinska J,Spaak P

更新日期：2010-11-01 00:00:00

abstract：:Induced defences are a typical case of phenotypic plasticity, involving benefits for 'plastic' phenotypes under environments with variable degree of stress. Defence induction, in turn, could be energetically expensive incurring costs on growth and reproduction. In this study, we investigated the genetic variation and ...

journal_title：Journal of evolutionary biology

authors： Castañeda LE,Figueroa CC,Nespolo RF

更新日期：2010-11-01 00:00:00

abstract：:Recently, two squirrel species (Spermophilus spp.) were discovered to anoint their bodies with rattlesnake scent as a means of concealing their odour from these chemosensory predators. In this study, we tested multiple species with predator scents (rattlesnake and weasel) to determine the prevalence of scent applicati...

journal_title：Journal of evolutionary biology

authors： Clucas B,Ord TJ,Owings DH

更新日期：2010-10-01 00:00:00

abstract：:Genome scans have been used in the studies of ecological speciation to find genomic regions ('outlier loci') showing reduced gene flow between divergent populations/species. High-throughput sequencing ('454') offers new opportunities in this field via transcriptome sequencing. Divergent ecotypes of the marine gastropo...

journal_title：Journal of evolutionary biology

authors： Galindo J,Grahame JW,Butlin RK

更新日期：2010-09-01 00:00:00

abstract：:The evolutionary forces shaping within- and across-species variation in the investment in male and female sex function are still incompletely understood. Despite earlier suggestions that in plants the evolution or cosexuality vs. dioecy, as well as sex allocation among cosexuals, is affected by seed and pollen dispers...

journal_title：Journal of evolutionary biology

authors： Fromhage L,Kokko H

更新日期：2010-09-01 00:00:00

abstract：:When individuals interact, phenotypic variation can be partitioned into direct genetic effects (DGEs) of the individuals' own genotypes, indirect genetic effects (IGEs) of their social partners' genotypes and epistatic interactions between the genotypes of interacting individuals ('genotype-by-genotype (GxG) epistasis...

journal_title：Journal of evolutionary biology

authors： Buttery NJ,Thompson CR,Wolf JB

更新日期：2010-08-01 00:00:00

abstract：:Aposematism is defined as the use of conspicuous colouration to warn predators that an individual is chemically or otherwise defended. Mechanisms that drive the evolution of aposematism are complex. Theoretical and empirical studies show that conspicuousness can be either positively or negatively correlated with toxic...

journal_title：Journal of evolutionary biology

authors： Cortesi F,Cheney KL

更新日期：2010-07-01 00:00:00

abstract：:Arbuscular mycorrhizal fungi (AMF) are heterokaryotes with an unusual genetic makeup. Substantial genetic variation occurs among nuclei within a single mycelium or isolate. AMF reproduce through spores that contain varying fractions of this heterogeneous population of nuclei. It is not clear whether this genetic varia...

journal_title：Journal of evolutionary biology

authors： Boon E,Zimmerman E,Lang BF,Hijri M

更新日期：2010-07-01 00:00:00

abstract：:The brood parasitic common cuckoo Cuculus canorus consists of gentes, which typically parasitize only a single host species whose eggs they often mimic. Where multiple cuckoo gentes co-exist in sympatry, we may expect variable but generally poorer mimicry because of host switches or inter-gens gene flow via males if t...

journal_title：Journal of evolutionary biology

authors： Antonov A,Stokke BG,Vikan JR,Fossøy F,Ranke PS,Røskaft E,Moksnes A,Møller AP,Shykoff JA

更新日期：2010-06-01 00:00:00

abstract：:Switch-induced developmental plasticity, such as the diapause decision in insects, is a major form of adaptation to variable environments. As individuals that follow alternative developmental pathways will experience different selective environments the diapause decision may evolve to a cascade switch that induces add...

journal_title：Journal of evolutionary biology

authors： Gotthard K,Berger D

更新日期：2010-06-01 00:00:00

abstract：:The aim of this article is to demonstrate possible recombination-associated evolutionary forces affecting the genomic distribution of processed pseudogenes. The relationship between recombination rate and the distribution of processed pseudogenes is analysed in the human genome. The results show that processed pseudog...

journal_title：Journal of evolutionary biology

authors： Liu G,Li H,Cai L

更新日期：2010-05-01 00:00:00

abstract：:Animals must allocate some proportion of their time to detecting predators. In birds and mammals, such anti-predator vigilance has been well studied, and we know that it may be influenced by a variety of intrinsic and extrinsic factors. Despite hundreds of studies focusing on vigilance and suggestions that there are i...

journal_title：Journal of evolutionary biology

authors： Blumstein DT,Lea AJ,Olson LE,Martin JG

更新日期：2010-05-01 00:00:00

abstract：:Pseudochondrostoma duriense and Achondrostoma oligolepis are two Iberian endemic cyprinid fish species that occur in sympatry over most of their distribution range and that are suspected to hybridize in nature. Here, we employed a combination of mitochondrial and microsatellite markers to explore the extent of introgr...

journal_title：Journal of evolutionary biology

authors： Aboim MA,Mavárez J,Bernatchez L,Coelho MM

更新日期：2010-04-01 00:00:00

abstract：:Although heritability estimates for traits potentially under natural selection are increasingly being reported, their estimation remains a challenge if we are to understand the patterns of adaptive phenotypic change in nature. Given the potentially important role of selection on the early life phenotype, and thereby o...

journal_title：Journal of evolutionary biology

authors： Páez DJ,Morrissey M,Bernatchez L,Dodson JJ

更新日期：2010-04-01 00:00:00

abstract：:Although many of the statistical techniques used in comparative biology were originally developed in quantitative genetics, subsequent development of comparative techniques has progressed in relative isolation. Consequently, many of the new and planned developments in comparative analysis already have well-tested solu...

journal_title：Journal of evolutionary biology

authors： Hadfield JD,Nakagawa S

更新日期：2010-03-01 00:00:00

abstract：:Sexual selection can explain major micro- and macro-evolutionary patterns. Much of current theory predicts that the strength of sexual selection (i) is driven by the relative abundance of males and females prepared to mate (i.e. the operational sex ratio, OSR) and (ii) can be generally estimated by calculating intra-s...

journal_title：Journal of evolutionary biology

authors： Klug H,Heuschele J,Jennions MD,Kokko H

更新日期：2010-03-01 00:00:00

abstract：:Vertebrates commonly use carotenoid-based traits as social signals. These can reliably advertise current nutritional status and health because carotenoids must be acquired through the diet and their allocation to ornaments is traded-off against other self-maintenance needs. We propose that the coloration more generall...

journal_title：Journal of evolutionary biology

authors： Mougeot F,Martínez-Padilla J,Bortolotti GR,Webster LM,Piertney SB

更新日期：2010-03-01 00:00:00

abstract：:Current advances in genetic analysis are opening up our knowledge of the genetics of species differences, but challenges remain, particularly for out-bred natural populations. We constructed a microsatellite-based linkage map for two out-bred lines of Drosophila montana derived from divergent populations by taking adv...

journal_title：Journal of evolutionary biology

authors： Schäfer MA,Mazzi D,Klappert K,Kauranen H,Vieira J,Hoikkala A,Ritchie MG,Schlötterer C

更新日期：2010-03-01 00:00:00

abstract：:The origin of endemic South American canid fauna has been traditionally linked with the rise of the Isthmus of Panama, suggesting that diversification of the dog fauna on this continent occurred very rapidly. Nevertheless, despite its obvious biogeographic appeal, the tempo of Canid evolution in South America has neve...

journal_title：Journal of evolutionary biology

authors： Perini FA,Russo CA,Schrago CG

更新日期：2010-02-01 00:00:00

abstract：:Males of many animals perform 'copulatory courtship' during copulation, but the possible reproductive significance of this behaviour has seldom been investigated. In some animals, including the spider Physocyclus globosus (Pholcidae), the female discards sperm during or immediately following some copulations. In this ...

journal_title：Journal of evolutionary biology

authors： Peretti AV,Eberhard WG

更新日期：2010-02-01 00:00:00

abstract：:The evolutionary history of aquatic invasion in birds would be incomplete without incorporation of extinct species. We show that aquatic affinities in fossil birds can be inferred by multivariate analysis of skeletal features and locomotion of 245 species of extant birds. Regularized discriminant analyses revealed tha...

journal_title：Journal of evolutionary biology

authors： Hinić-Frlog S,Motani R

更新日期：2010-02-01 00:00:00

abstract：:Reproductive parasites such as Wolbachia can spread through uninfected host populations by increasing the relative fitness of the infected maternal lineage. However, empirical estimates of how fast this process occurs are limited. Here we use nucleotide sequences of male-killing Wolbachia bacteria and co-inherited mit...

journal_title：Journal of evolutionary biology

authors： Duplouy A,Hurst GD,O'Neill SL,Charlat S

更新日期：2010-01-01 00:00:00

abstract：:The independent evolution of males and females is typically constrained by shared genetic variance. Despite substantial research, we still know little about the evolution of cross-sex genetic covariance and its standardized measure, the cross-sex genetic correlation (r(MF)). In particular, it is unclear if r(MF) tend ...

journal_title：Journal of evolutionary biology

authors： Poissant J,Coltman DW

更新日期：2009-12-01 00:00:00

abstract：:Multiple functional queens in a colony (polygyny) and multiple mating by queens (polyandry) in social insects challenge kin selection, because they dilute inclusive fitness benefits from helping. Colonies of the ant Plagiolepis pygmaea brash contain several hundreds of multiply mated queens. Yet, within-colony related...

journal_title：Journal of evolutionary biology

authors： Thurin N,Aron S

更新日期：2009-12-01 00:00:00

abstract：:One explanation for hybridization between species is the fitness benefits it occasionally confers to the hybridizing individuals. This explanation is possible in species that have evolved alternative male reproductive tactics: individuals with inferior tactics might be more prone to hybridization provided it increases...

journal_title：Journal of evolutionary biology

authors： Tynkkynen K,Raatikainen KJ,Häkkilä M,Haukilehto E,Kotiaho JS

更新日期：2009-12-01 00:00:00

abstract：:Genetic diversity and spatial structure of populations are important for antagonistic coevolution. We investigated genetic variation and population structure of three closely related European ant species: the social parasite Harpagoxenus sublaevis and its two host species Leptothorax acervorum and Leptothorax muscorum...

journal_title：Journal of evolutionary biology

authors： Foitzik S,Bauer S,Laurent S,Pennings PS

更新日期：2009-12-01 00:00:00

abstract：:Our understanding of how fast mating behaviour evolves in insects is rather poor due to a lack of comparative studies among insect groups for which phylogenetic relationships are known. Here, we present a detailed study of the mating behaviour of 27 species of Sepsidae (Diptera) for which a well-resolved and supported...

journal_title：Journal of evolutionary biology

authors： Puniamoorthy N,Ismail MR,Tan DS,Meier R

更新日期：2009-11-01 00:00:00

abstract：:Knowledge on interspecific pre- and post-zygotic isolation mechanisms provides insights into speciation patterns. Using crosses (F(1) and backcrosses) of two closely related flea beetles species, Altica fragariae and A. viridicyanea, specialized on different hosts in sympatry, we measured: (a) the type of reproductive...

journal_title：Journal of evolutionary biology

authors： Xue HJ,Magalhães S,Li WZ,Yang XK

更新日期：2009-11-01 00:00:00

abstract：:The reproductive mechanism, that is whether an organism outcrosses, selfs or asexually reproduces, has a substantial impact on the amount and pattern of genetic variation. In this study, we estimate genetic variation and genetic load for a predominately asexual population of Mimulus guttatus, and then compare our resu...

journal_title：Journal of evolutionary biology

authors： Marriage TN,Kelly JK

更新日期：2009-11-01 00:00:00

abstract：:Recent evidence suggests that marker-based heterozygosity-fitness correlations may be driven by only one or a few markers, indicating local heterozygosity effects caused by linkage disequilibrium with functional genes. In this study, we investigated the relationship between microsatellite heterozygosity and a measure ...

journal_title：Journal of evolutionary biology

authors： Fossøy F,Johnsen A,Lifjeld JT

更新日期：2009-09-01 00:00:00

abstract：:We estimated broad-sense heritabilities (H(2)) of 13 female and seven male life-history traits of the Glanville fritillary butterfly (Melitaea cinxia) under semi-natural conditions in a large outdoor population cage. The analysis was based on full-sib families collected as young larvae in the field and reared under co...

journal_title：Journal of evolutionary biology

authors： Klemme I,Hanski I

更新日期：2009-09-01 00:00:00

abstract：:Most studies seeking to provide evolutionary explanations for brain size variability have relied on interspecific comparisons, while intraspecific studies utilizing ecologically divergent populations to this effect are rare. We investigated the brain size and structure of first-generation laboratory-bred nine-spined s...

journal_title：Journal of evolutionary biology

authors： Gonda A,Herczeg G,Merilä J

更新日期：2009-08-01 00:00:00

abstract：:Developmental instability (DI) is the sensitivity of a developing trait to random noise and can be measured by degrees of directionally random asymmetry [fluctuating asymmetry (FA)]. FA has been shown to increase with loss of genetic variation and inbreeding as measures of genetic stress, but associations vary among s...

journal_title：Journal of evolutionary biology

authors： Van Dongen S,Lens L,Pape E,Volckaert FA,Raeymaekers JA

更新日期：2009-08-01 00:00:00

abstract：:Longevity is a major characteristic of animals that has long fascinated scientists. In this work, we present a comprehensive database of animal longevity records and related life-history traits entitled AnAge, which we compiled and manually curated from an extensive literature. AnAge started as a collection of longevi...

journal_title：Journal of evolutionary biology

authors： de Magalhães JP,Costa J

更新日期：2009-08-01 00:00:00