Rapid evolution towards heavy metal resistance by mountain birch around two subarctic copper-nickel smelters.

abstract：:The evolution of multicellularity is a major transition that is not yet fully understood. Specifically, we do not know whether there are any mechanisms by which multicellularity can be maintained without a single-cell bottleneck or other relatedness-enhancing mechanisms. Under low relatedness, cheaters can evolve that...

journal_title：Journal of evolutionary biology

authors： Levin SR,Brock DA,Queller DC,Strassmann JE

更新日期：2015-04-01 00:00:00

abstract：:Much of the variation among insects is derived from the different ways that chitin has been moulded to form rigid structures, both internal and external. In this study, we identify a highly conserved expression pattern in an insect-only gene family, the Osiris genes, that is essential for development, but also plays a...

journal_title：Journal of evolutionary biology

authors： Smith CR,Morandin C,Noureddine M,Pant S

更新日期：2018-04-01 00:00:00

abstract：:Temporal resource fluctuations could affect the strength of antagonistic coevolution through population dynamics and costs of adaptation. We studied this by coevolving the prey bacterium Serratia marcescens with the predatory protozoa Tetrahymena thermophila in constant and pulsed-resource environments for approximate...

journal_title：Journal of evolutionary biology

authors： Friman VP,Laakso J,Koivu-Orava M,Hiltunen T

更新日期：2011-12-01 00:00:00

abstract：:Many animals provide parental care to offspring. Parental sex-roles vary extensively across taxa, and such patterns are considered well documented. However, information on amphibians is lacking relative to other vertebrate groups. We combine natural history observations with functional and historical analyses to exami...

journal_title：Journal of evolutionary biology

authors： Delia J,Bravo-Valencia L,Warkentin KM

更新日期：2017-05-01 00:00:00

abstract：:In a simulation model we investigated how much of the initial genetic variation that is retained in a population after a dominant mutation has brought apomixis to fixation in it. A marker allele associated with the apomixis mutation is generally retained after the fixation of apomixis, particularly if the two alleles ...

journal_title：Journal of evolutionary biology

authors： Adolfsson S,Bengtsson BO

更新日期：2007-09-01 00:00:00

abstract：:Besides several exceptions, asexual metazoans are usually viewed as ephemeral sinks for genomes, which become 'frozen' in clonal lineages after their emergence from ancestral sexual species. Here, we investigated whether and at what rate the asexuals are able to introgress their genomes back into the parental sexual p...

journal_title：Journal of evolutionary biology

authors： Mikulíček P,Kautman M,Demovič B,Janko K

更新日期：2014-03-01 00:00:00

abstract：:We explore the relevance of honest signalling theory to the evolution of aposematism. We begin with a general consideration of models of signal stability, with a focus on the Zahavian costly signalling framework. Next, we review early models of signalling in the context of aposematism (some that are consistent and som...

journal_title：Journal of evolutionary biology

authors： Summers K,Speed MP,Blount JD,Stuckert AM

更新日期：2015-09-01 00:00:00

abstract：:A theoretical debate about whether parasitoids should be time or egg limited now recognizes both as feasible, and interest has turned to determining the circumstances under which each might arise in the field, and their implications for parasitoid behaviour and evolution. Egg loads of parasitoids sampled from the fiel...

journal_title：Journal of evolutionary biology

authors： Phillips CB,Kean JM

更新日期：2017-07-01 00:00:00

abstract：:Although high levels of self-fertilization (>85%) are not uncommon in nature, organisms reproducing entirely through selfing are extremely rare. Predominant selfers are expected to have low genetic diversity because genetic variation is distributed among rather than within lineages and is readily lost through genetic ...

journal_title：Journal of evolutionary biology

authors： Hughes PW,Simons AM

更新日期：2015-11-01 00:00:00

abstract：:We compared historic and contemporary genetic variation in two threatened New Zealand birds (saddlebacks and robins) with disparate bottleneck histories. Saddlebacks showed massive loss of genetic variation when extirpated from the mainland, but no significant loss of variation following a severe bottleneck in the 196...

journal_title：Journal of evolutionary biology

authors： Taylor SS,Jamieson IG,Wallis GP

更新日期：2007-09-01 00:00:00

abstract：:Parasitism has been proposed as a factor in host speciation, as an agent affecting coexistence of host species in species-rich communities and as a driver of post-speciation diversification. Young adaptive radiations of closely related host species of varying ecological and genomic differentiation provide interesting ...

journal_title：Journal of evolutionary biology

authors： Karvonen A,Wagner CE,Selz OM,Seehausen O

更新日期：2018-09-01 00:00:00

abstract：:We examined the selective consequences of variation in behaviour and endocrine physiology in two female throat-colour morphs of the lizard, Uta stansburiana in the wild. Female morphs differed in home-range distribution patterns and corticosterone levels in relation to the density and frequency of their female neighbo...

journal_title：Journal of evolutionary biology

authors： Comendant T,Sinervo B,Svensson EI,Wingfield J

更新日期：2003-09-01 00:00:00

abstract：:Certain types of asexual reproduction lead to loss of complementation, that is unmasking of recessive deleterious alleles. A theoretical measure of this loss is calculated for apomixis, automixis and endomitosis in the cases of diploidy and polyploidy. The effect of the consequent unmasking of deleterious recessive mu...

journal_title：Journal of evolutionary biology

authors： Archetti M

更新日期：2004-09-01 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：:Mutagenic and epigenetic effects of environmental stressors and their transgenerational consequences are of interest to evolutionary biologists because they can amplify natural genetic variation. We studied the effect of parental exposure to radioactive contamination on offspring development in lesser marsh grasshoppe...

journal_title：Journal of evolutionary biology

authors： Beasley DE,Bonisoli-Alquati A,Welch SM,Møller AP,Mousseau TA

更新日期：2012-06-01 00:00:00

abstract：:Evolutionary theories of ageing predict that life span increases with decreasing extrinsic mortality, and life span variation among queens in ant species seems to corroborate this prediction: queens, which are the only reproductive in a colony, live much longer than queens in multi-queen colonies. The latter often inh...

journal_title：Journal of evolutionary biology

authors： Schrempf A,Cremer S,Heinze J

更新日期：2011-07-01 00:00:00

abstract：:Theory suggests that intraspecific competition associated with direct competition between inbred and outbred individuals should be an important determinant of the severity of inbreeding depression. The reason is that, if outbred individuals are stronger competitors than inbred ones, direct competition should have a di...

journal_title：Journal of evolutionary biology

authors： Miller M,Ratz T,Richardson J,Smiseth PT

更新日期：2019-01-01 00:00:00

abstract：:Understanding how environmental stress alters the consequences of hybridization is important, because the rate of hybridization and the likelihood of hybrid speciation both appear elevated in harsh, disturbed or marginal habitats. We assessed fitness, morphometrics and molecular genetic composition over 14 generations...

journal_title：Journal of evolutionary biology

authors： Hwang AS,Pritchard VL,Edmands S

更新日期：2016-09-01 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：:Meiosis in Saccharomyces yeast produces four haploid gametes that usually fuse with each other, an extreme form of self-fertilization among the products of a single meiosis known as automixis. The gametes signal to each other with sex pheromone. Better-quality gametes produce stronger signals and are preferred as mate...

journal_title：Journal of evolutionary biology

authors： Tazzyman SJ,Seymour RM,Pomiankowski A,Greig D

更新日期：2012-08-01 00:00:00

abstract：:Post-copulatory sexual selection, in the form sperm competition, has influenced the evolution of several male reproductive traits. However, theory predicts that sperm competition would lead to trade-offs between numbers and size of spermatozoa because increased costs per cell would result in a reduction of sperm numbe...

journal_title：Journal of evolutionary biology

authors： Tourmente M,Delbarco Trillo J,Roldan ER

更新日期：2015-10-01 00:00:00

abstract：:Seasonal time constraints are usually stronger at higher than lower latitudes and can exert strong selection on life-history traits and the correlations among these traits. To predict the response of life-history traits to environmental change along a latitudinal gradient, information must be obtained about genetic va...

journal_title：Journal of evolutionary biology

authors： Sniegula S,Golab MJ,Drobniak SM,Johansson F

更新日期：2018-06-01 00:00:00

abstract：:The ecological opportunities associated with transitions across the marine-freshwater interface are regarded as an important catalyst of diversification in a range of aquatic taxa. Here, we examined the role of these major habitat transitions and trophic diversification in a radiation of Australasian fishes using a ne...

journal_title：Journal of evolutionary biology

authors： Davis AM,Unmack PJ,Pusey BJ,Johnson JB,Pearson RG

更新日期：2012-06-01 00:00:00

abstract：:Sex allocation theory predicts females will adaptively manipulate sex ratios to maximize their progeny's reproductive value. Recently, the generality of biased sex allocation in birds has been questioned by meta-analytic reviews, which demonstrate that many previously reported significant results may simply reflect sa...

journal_title：Journal of evolutionary biology

authors： Dowling DK,Mulder RA

更新日期：2006-03-01 00:00:00

abstract：:Studying the genetic architecture of sexual traits provides insight into the rate and direction at which traits can respond to selection. Traits associated with few loci and limited genetic and phenotypic constraints tend to evolve at high rates typically observed for secondary sexual characters. Here, we examined the...

journal_title：Journal of evolutionary biology

authors： Blankers T,Lübke AK,Hennig RM

更新日期：2015-09-01 00:00:00

abstract：:Nectar robbing not only affects the reproductive fitness of the plant but it may also potentially affect the pollination dynamics of the associated coflowering individuals. In this study, we established that the nectar robber Xylocopa sinensis robs nectar only from the hermaphrodite ramets of the gynodioecious plant G...

journal_title：Journal of evolutionary biology

authors： Zhang YW,Yang CF,Zhao JM,Guo YH

更新日期：2009-03-01 00:00:00

abstract：:Avian brood parasites reduce the reproductive output of their hosts and thereby select for defence mechanisms such as ejection of parasitic eggs. Such defence mechanisms simultaneously select for counter-defences in brood parasites, causing a coevolutionary arms race. Although coevolutionary models assume that defence...

journal_title：Journal of evolutionary biology

authors： Martín-Gálvez D,Soler JJ,Martínez JG,Krupa AP,Richard M,Soler M,Møller AP,Burke T

更新日期：2006-03-01 00:00:00

abstract：:Squamate embryos require weeks of high temperature to complete development, with the result that cool climatic areas are dominated by viviparous taxa (in which gravid females can sun-bask to keep embryos warm) rather than oviparous taxa (which rely on warm soil to incubate their eggs). How, then, can some oviparous ta...

journal_title：Journal of evolutionary biology

authors： Shine R,Wapstra E,Olsson M

更新日期：2018-01-01 00:00:00

abstract：:As females and males have different roles in reproduction, they are expected to require different nutrients for the expression of reproductive traits. However, due to their shared genome, both sexes may be constrained in the regulation of nutrient intake that maximizes sex-specific fitness. Here, we used the Geometric...

journal_title：Journal of evolutionary biology

authors： Ng SH,Simpson SJ,Simmons LW

更新日期：2019-10-01 00:00:00

abstract：:The social niche specialization hypothesis predicts that group-living animals should specialize in particular social roles to avoid social conflict, resulting in alternative life-history strategies for different roles. Social niche specialization, coupled with role-specific life-history trade-offs, should thus generat...

journal_title：Journal of evolutionary biology

authors： Carter AJ,English S,Clutton-Brock TH

更新日期：2014-05-01 00:00:00