abstract：:For 8 years I have been pursuing in print an ambitious and at times highly technical programme of work, the 'Formal Darwinism Project', whose essence is to underpin and formalize the fitness optimization ideas used by behavioural ecologists, using a new kind of argument linking the mathematics of motion and the mathem...

journal_title：Journal of evolutionary biology

authors： Grafen A

更新日期：2007-07-01 00:00:00

abstract：:In social insects, the emergence of multiple queening is linked to changes in a suite of traits such as the reproductive life span of queens, mating patterns and population structure. We investigated queen turnover, colony longevity, spatial distribution patterns and genetic differentiation in a population of the soci...

journal_title：Journal of evolutionary biology

authors： Bargum K,Helanterä H,Sundström L

更新日期：2007-07-01 00:00:00

abstract：:Female insects that mate multiply tend to have increased lifetime fitness, apparently because of greater access to male-derived resources (e.g. sperm, nuptial gifts) that elevate fertility/fecundity. Experiments that standardize the number of matings per female also show that polyandry can improve aspects of offspring...

journal_title：Journal of evolutionary biology

authors： Jennions MD,Drayton JM,Brooks R,Hunt J

更新日期：2007-07-01 00:00:00

abstract：:Sexual isolation may arise when male mating traits and female preferences differ between species. Such divergence in mating traits is likely to occur when the strength or targets of sexual selection differ. Therefore, by comparing the traits under sexual selection in closely related species and the nature of preferenc...

journal_title：Journal of evolutionary biology

authors： Boughman JW

更新日期：2007-07-01 00:00:00

abstract：:The temperature-size rule is a common pattern of phenotypic plasticity in which higher temperature during development results in a smaller adult body size (i.e. a thermal reaction norm with negative slope). Examples and exceptions to the rule are known in multiple groups of organisms, but rapid population differentiat...

journal_title：Journal of evolutionary biology

authors： Kingsolver JG,Massie KR,Ragland GJ,Smith MH

更新日期：2007-05-01 00:00:00

abstract：:The recent invasion by self-replicating socially parasitic Cape honeybee workers, Apis mellifera capensis, of colonies of the neighbouring African subspecies Apis mellifera scutellata represents an opportunity to study evolution of intraspecific parasitism in real time. As honeybee workers compete pheromonally for rep...

journal_title：Journal of evolutionary biology

authors： Dietemann V,Neumann P,Härtel S,Pirk CW,Crewe RM

更新日期：2007-05-01 00:00:00

abstract：:Phenotypic polymorphisms in natural systems are often maintained by ecological selection, but only if niche segregation between morphs exists. Polymorphism for eyed-side direction is rare among the approximately 700 species of flatfish (Pleuronectiformes), and the evolutionary mechanisms that maintain it are unknown. ...

journal_title：Journal of evolutionary biology

authors： Bergstrom CA

更新日期：2007-05-01 00:00:00

abstract：:We explored the evolution of recombination under antagonistic coevolution, concentrating on the equilibrium frequencies of modifier alleles causing recombination in initially nonrecombining populations. We found that the equilibrium level of recombination in the host depended not only on parasite virulence, but also o...

journal_title：Journal of evolutionary biology

authors： Peters AD,Lively CM

更新日期：2007-05-01 00:00:00

abstract：:Character displacement - the divergence of traits between species in response to competition for resources or mates - has long been viewed as a major cause of adaptive diversification and species coexistence. Yet, we lack answers to basic questions concerning the causes and consequences of character displacement, not ...

journal_title：Journal of evolutionary biology

authors： Rice AM,Pfennig DW

更新日期：2007-03-01 00:00:00

abstract：:The use of an oxyphobic index (OI) based on the propensity of amino acids to enter more frequently the proteins of anaerobes makes it possible to make inferences on the environment in which the last universal common ancestor (LUCA) lived. The reconstruction of the ancestral sequences of proteins using a method based o...

journal_title：Journal of evolutionary biology

authors： Di Giulio M

更新日期：2007-03-01 00:00:00

abstract：:Island races of passerine birds display repeated evolution towards larger body size compared with their continental ancestors. The Capricorn silvereye (Zosterops lateralis chlorocephalus) has become up to six phenotypic standard deviations bigger in several morphological measures since colonization of an island approx...

journal_title：Journal of evolutionary biology

authors： Frentiu FD,Clegg SM,Blows MW,Owens IP

更新日期：2007-03-01 00:00:00

abstract：:Senescence is the age-related deterioration of the phenotype, explained by accumulation of mutations, antagonistic pleiotropy, free radicals or other mechanisms. I investigated patterns of actuarial senescence in a sample of 169 species of birds in relation to latitude and migration, by analysing longevity records adj...

journal_title：Journal of evolutionary biology

authors： Møller AP

更新日期：2007-03-01 00:00:00

abstract：:Pathogens are thought to exert strong selection on their hosts leading to increased host resistance. Bacillus thuringiensis kurstaki (Bkt) is a ubiquitous entomopathogen that has become the mainstay of nonchemical control of Lepidopteran pests and thus, the potential exists for the evolution of resistance in targeted ...

journal_title：Journal of evolutionary biology

authors： Janmaat AF,Myers JH

更新日期：2007-01-01 00:00:00

abstract：:Competition and conflict among individuals can favour exploitative strategies that undermine the common good. Theory suggests that this can lead to a tragedy of the commons and ultimately population extinction, a phenomenon known as evolutionary suicide. Here, I present a model of the evolutionary tragedy of the commo...

journal_title：Journal of evolutionary biology

authors： Rankin DJ

更新日期：2007-01-01 00:00:00

abstract：:Recent models of mate preference evolution suggest that direct selection on alleles at preference loci and correlated evolution of preference with locally adapted mating cues are more likely to drive the evolution of assortative mate preference than reinforcement. Mate preference evolution in mimetic Heliconius butter...

journal_title：Journal of evolutionary biology

authors： Kronforst MR,Young LG,Gilbert LE

更新日期：2007-01-01 00:00:00

abstract：:Mountain birch, Betula pubescens ssp. tortuosa, forms the treeline in northern Sweden. A recent shift in the range of the species associated with an elevation of the treeline is commonly attributed to climate warming. Using microsatellite markers, we explored the genetic structure of populations along an altitudinal g...

journal_title：Journal of evolutionary biology

authors： Truong C,Palmé AE,Felber F

更新日期：2007-01-01 00:00:00

abstract：:I examined the intrinsic postzygotic incompatibilities between two pupfishes, Cyprinodon elegans and Cyprinodon variegatus. Laboratory hybridization experiments revealed evidence of strong postzygotic isolation. Male hybrids have very low fertility, and the survival of backcrosses into C. elegans was substantially red...

journal_title：Journal of evolutionary biology

authors： Tech C

更新日期：2006-11-01 00:00:00

abstract：:The virulence factor pertactin is expressed by the closely related pathogens Bordetella pertussis, Bordetella parapertussis and Bordetella bronchiseptica. Pertactin is an autotransporter involved in adherence of Bordetella species to the lung epithelium of mammalian hosts, and it is an important component of most curr...

journal_title：Journal of evolutionary biology

authors： Diavatopoulos DA,Hijnen M,Mooi FR

更新日期：2006-11-01 00:00:00

abstract：:Some ants have an extraordinary form of social organization, called unicoloniality, whereby individuals mix freely among physically separated nests. This mode of social organization has been primarily studied in introduced and invasive ant species, so that the recognition ability and genetic structure of ants forming ...

journal_title：Journal of evolutionary biology

authors： Holzer B,Chapuisat M,Kremer N,Finet C,Keller L

更新日期：2006-11-01 00:00:00

abstract：:The maintenance of females in gender dimorphic populations requires that they have a fitness advantage to compensate for their loss of male reproductive function. We assess whether inbreeding avoidance provides this advantage in two subdioecious Wurmbea dioica populations by estimating seed production, outcrossing rat...

journal_title：Journal of evolutionary biology

authors： Ramsey M,Vaughton G,Peakall R

更新日期：2006-09-01 00:00:00

abstract：:The genomic distribution of microsatellites can be explained by DNA slippage, slippage like processes and base substitutions. Nevertheless, microsatellites are also frequently associated with repetitive DNA, raising the question of the relative contributions of these processes to microsatellite genesis. We show that i...

journal_title：Journal of evolutionary biology

authors： Tero N,Neumeier H,Gudavalli R,Schlötterer C

更新日期：2006-09-01 00:00:00

abstract：:It is now widely appreciated that competition between kin inhibits the evolution of altruism. In standard population genetics models, it is difficult for indiscriminate altruism towards social partners to be favoured at all. The reason is that while limited dispersal increases the kinship of social partners it also in...

journal_title：Journal of evolutionary biology

authors： Gardner A,West SA

更新日期：2006-09-01 00:00:00

abstract：:Metamorphosis can disrupt the correlation structure between juvenile and adult traits, thus allowing relatively independent evolution in contrasting environments. We used a multiple experimental approach to investigate how diet quality and larval predation risk affected the rates of growth and development in painted f...

journal_title：Journal of evolutionary biology

authors： Nicieza AG,Alvarez D,Atienza EM

更新日期：2006-07-01 00:00:00

abstract：:Fine scale spatial structure (FSSS) of cytoplasmic genes in plants is thought to be generated via founder events and can be amplified when seeds germinate close to their mother. In gynodioecious species these processes are expected to generate FSSS in sex ratio because maternally inherited cytoplasmic male sterility g...

journal_title：Journal of evolutionary biology

authors： Olson MS,Graf AV,Niles KR

更新日期：2006-07-01 00:00:00

abstract：:Although Trinidadian populations of the guppy, Poecilia reticulata, show considerable adaptive genetic differentiation, they have been assumed to show little or no reproductive isolation. We tested this assumption by crossing Caroni (Tacarigua River) and Oropuche (Oropuche R.) drainage populations from Trinidad's Nort...

journal_title：Journal of evolutionary biology

authors： Russell ST,Magurran AE

更新日期：2006-07-01 00:00:00

abstract：:Using supertree phylogenetic reconstructions, we investigate how livebearing and freshwater adaptations may have shaped evolutionary patterns in the Atherinomorpha, a large clade (approximately 1500 extant species) of ray-finned fishes. Based on maximum parsimony reconstructions, livebearing appears to have evolved at...

journal_title：Journal of evolutionary biology

authors： Mank JE,Avise JC

更新日期：2006-05-01 00:00:00

abstract：:Immune defence is hypothesized to be a trait that bears significant fitness costs as well as benefits in that mounting a defence depreciates the value of other life-history traits. Thus the cost of mounting an immune response could affect the evolution of both the immune system and correlated life history traits. In t...

journal_title：Journal of evolutionary biology

authors： Rantala MJ,Roff DA

更新日期：2006-05-01 00:00:00

abstract：:The resolution of taxonomic classifications for delphinid cetaceans has been problematic, especially for species in the genera Delphinus, Tursiops and Stenella. The frequent lack of correspondence between morphological and genetic differentiation in these species raises questions about the mechanisms responsible for t...

journal_title：Journal of evolutionary biology

authors： Natoli A,Cañadas A,Peddemors VM,Aguilar A,Vaquero C,Fernández-Piqueras P,Hoelzel AR

更新日期：2006-05-01 00:00:00

abstract：:Vertebrates respond to environmental stressors through the neuro-endocrine stress response, which involves the production of glucocorticoids. We have selected independent, duplicate divergent lines of zebra finches for high, low and control corticosterone responses to a mild stressor. This experiment has shown that ov...

journal_title：Journal of evolutionary biology

authors： Evans MR,Roberts ML,Buchanan KL,Goldsmith AR

更新日期：2006-03-01 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：: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：:The effects of competition on the genetic composition of natural populations are not well understood. We combined demography and molecular genetics to study how intraspecific competition affects microevolution in cohorts of volunteer plants of cassava (Manihot esculenta) originating from seeds in slash-and-burn fields...

journal_title：Journal of evolutionary biology

authors： Pujol B,McKey D

更新日期：2006-01-01 00:00:00

abstract：:It has been hypothesized that in ancient apomictic, nonrecombining lineages the two alleles of a single copy gene will become highly divergent as a result of the independent accumulation of mutations (Meselson effect). We used a partial sequence of the elongation factor-1alpha (ef-1alpha) and the heat shock protein 82...

journal_title：Journal of evolutionary biology

authors： Schaefer I,Domes K,Heethoff M,Schneider K,Schön I,Norton RA,Scheu S,Maraun M

更新日期：2006-01-01 00:00:00

abstract：:One of the main goals of molecular evolutionary biology is to determine the factors that influence the evolutionary rate of selectively neutral DNA, but much remains unknown, especially for plants. Key factors that could alter the mutation rate include environmental tolerances (because they reflect a plants vulnerabil...

journal_title：Journal of evolutionary biology

authors： Whittle CA

更新日期：2006-01-01 00:00:00

abstract：:It has often been argued that evolutionary diversification is the result of divergent natural selection for specialization on alternative resources. I provide a comprehensive review of experiments that examine the ecology and genetics of resource specialization and adaptive radiation in microbial microcosms. In these ...

journal_title：Journal of evolutionary biology

authors： MacLean RC

更新日期：2005-11-01 00:00:00

abstract：:Adaptation occurs by gene replacement (or transient balanced polymorphism). Replacement may be caused by selection (local or global) and/or genetic drift among alleles. In addition, historical events may blur the respective effects of selection and drift during the course of replacement. We address the relative import...

journal_title：Journal of evolutionary biology

authors： Labbe P,Lenormand T,Raymond M

更新日期：2005-11-01 00:00:00

abstract：:Adaptive speciation occurs when frequency-dependent ecological interactions generate conditions of disruptive selection to which lineage splitting is an adaptive response. Under such selective conditions, evolution of assortative mating mechanisms enables the break-up of the ancestral lineage into diverging and reprod...

journal_title：Journal of evolutionary biology

authors： Doebeli M

更新日期：2005-11-01 00:00:00

abstract：:When the availability of sperm limits female reproductive success, competition for sperm, may be an important broker of sexual selection. This is because sperm limitation can increase the variance in female reproductive success, resulting in strong selection on females to compete for limited fertilization opportunitie...

journal_title：Journal of evolutionary biology

authors： Marshall DJ,Evans JP

更新日期：2005-09-01 00:00:00

abstract：:The importance of directional selection relative to neutral evolution may be determined by comparing quantitative genetic variation in phenotype (Q(ST)) to variation at neutral molecular markers (F(ST)). Quantitative divergence between salmonid life history types is often considerable, but ontogenetic changes in the s...

journal_title：Journal of evolutionary biology

authors： Perry GM,Audet C,Bernatchez L

更新日期：2005-09-01 00:00:00

abstract：:Laboratory studies on Drosophila have revealed that resistance to one environmental stress often correlates with resistance to other stresses. There is also evidence on genetic correlations between stress resistance, longevity and other fitness-related traits. The present work investigates these associations using art...

journal_title：Journal of evolutionary biology

authors： Bubliy OA,Loeschcke V

更新日期：2005-07-01 00:00:00