Evolution最新文献_第8页

Evaluating the Roles of Drift and Selection in Trait Loss along an Elevational Gradient. 沿海拔梯度评价漂变和选择在性状损失中的作用。

IF 3.1 2区环境科学与生态学

Evolution Pub Date : 2025-04-17 DOI: 10.1093/evolut/qpaf078

Sophia F Buysse, Samuel G Pérez, Joshua R Puzey, Ava Garrison, Gideon S Bradburd, Christopher G Oakley, Stephen J Tonsor, F Xavier Picó, Emily B Josephs, Jeffrey K Conner

{"title":"Evaluating the Roles of Drift and Selection in Trait Loss along an Elevational Gradient.","authors":"Sophia F Buysse, Samuel G Pérez, Joshua R Puzey, Ava Garrison, Gideon S Bradburd, Christopher G Oakley, Stephen J Tonsor, F Xavier Picó, Emily B Josephs, Jeffrey K Conner","doi":"10.1093/evolut/qpaf078","DOIUrl":"https://doi.org/10.1093/evolut/qpaf078","url":null,"abstract":"Traits that have lost function sometimes persist through evolutionary time. Persistence may occur if there is not enough standing genetic variation for the trait to allow a response to selection, if selection against the trait is weak relative to drift, or if the trait has a residual function. To determine the evolutionary processes shaping whether nonfunctional traits are retained or lost, we investigated short stamens in 16 populations of Arabidopsis thaliana along an elevational cline in northeast Spain. A. thaliana is highly self-pollinating and prior work suggests short stamens do not contribute to self-pollination. We found a cline in short stamen number from retention of short stamens in high elevation populations to incomplete loss in low elevation populations. We did not find evidence that limited genetic variation constrains short stamen loss at high elevations, nor evidence for divergent selection on short stamens between high and low elevations. Finally, we identified loci associated with short stamens in northeast Spain that are different from loci associated with variation in short stamens across latitudes from a previous study. Overall, we did not identify the evolutionary mechanisms contributing to an elevational cline in short stamen number so further research is clearly warranted.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143998950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Loss of pigments in females is associated with sexual dichromatism in an ornamental trait. 在观赏性状中，雌性色素的丧失与两性二色性有关。

IF 3.1 2区环境科学与生态学

Evolution Pub Date : 2025-04-12 DOI: 10.1093/evolut/qpaf075

Erin P Westeen, Guinevere O U Wogan, Ian J Wang, Michael L Yuan

{"title":"Loss of pigments in females is associated with sexual dichromatism in an ornamental trait.","authors":"Erin P Westeen, Guinevere O U Wogan, Ian J Wang, Michael L Yuan","doi":"10.1093/evolut/qpaf075","DOIUrl":"https://doi.org/10.1093/evolut/qpaf075","url":null,"abstract":"Sexual dichromatism is thought to evolve primarily as a function of sexual selection, especially female choice. However other forces, from sex-specific environmental conditions to social signaling in females, can also generate color differences between sexes. We studied dewlap dichromatism across 292 species of Anolis lizards. Dewlaps are colorful throat ornaments found on males of most anole species but are also present in females in many species. Although male and female dewlaps often have similar coloration, in some species they are strikingly dichromatic. We found that ornament color is labile and that dichromatism results from the loss of costly pigments in females. This pattern could indicate a shift towards signal loss in females; however, the secondary gains of female dewlaps across the phylogeny suggest a potential advantageous function. Possible mechanisms for female dewlap coloration include social selection, non-sexual signaling, or detectability in different microhabitats (e.g., sensory drive). Female dewlap color overlap between co-occurring species is both less than expected by chance overall and reduced in species-rich communities, suggesting that dichromatism could be driven by competition. Our results highlight that selection on females drives the observed pattern of dichromatism, suggesting a potentially adaptive role for female ornaments and emphasizing the need for additional work to understand female ornament evolution.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143999016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evolution of plasticity and character displacement in a fluctuating environment. 波动环境下的可塑性演化与特征位移。

IF 3.1 2区环境科学与生态学

Evolution Pub Date : 2025-04-10 DOI: 10.1093/evolut/qpaf070

Luis-Miguel Chevin, Lakshya Chauhan

{"title":"Evolution of plasticity and character displacement in a fluctuating environment.","authors":"Luis-Miguel Chevin, Lakshya Chauhan","doi":"10.1093/evolut/qpaf070","DOIUrl":"https://doi.org/10.1093/evolut/qpaf070","url":null,"abstract":"Species that compete for the same resource may undergo ecological character displacement (CD), where the phenotype of each species evolves to deviate from its optimum in the absence of competition. As natural habitats are rarely static, interspecific competition is likely to occur in environments that fluctuate over time. Such environmental fluctuations can in turn cause the evolution of phenotypic plasticity for traits mediating the competition. However, the interplay of environmental fluctuations, evolution of plasticity, and character displacement, has been little investigated. We use a quantitative genetic model to study theoretically how a randomly fluctuating environment and evolution of plasticity influence the outcome of ecological CD between two competing species. We show that environmental fluctuations make the conditions for CD more stringent, requiring stronger competitive selection relative to stabilizing selection. This occurs because environmental fluctuations reduce the average population size, and thereby competition intensity. Evolving plasticity can restore CD by buffering the impact of environmental fluctuations through phenotypic tracking, to a degree that depends on environmental predictability. Somewhat paradoxically, competition that favors phenotypic divergence among species can cause convergence in plasticity, when this reduces the load caused by fluctuations in phenotypic divergence. Our results shed light on how competition and plasticity influences evolution of the fundamental niche in a fluctuating environment.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144004734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The role of resource defensibility in facilitating sexually-selected weapon evolution: An experimental evolution test. 资源防御在促进性别选择武器进化中的作用：一个实验进化测试。

IF 3.1 2区环境科学与生态学

Evolution Pub Date : 2025-04-09 DOI: 10.1093/evolut/qpaf073

Tyler Audet, Audrey Wilson, Reuven Dukas, Ian Dworkin

{"title":"The role of resource defensibility in facilitating sexually-selected weapon evolution: An experimental evolution test.","authors":"Tyler Audet, Audrey Wilson, Reuven Dukas, Ian Dworkin","doi":"10.1093/evolut/qpaf073","DOIUrl":"https://doi.org/10.1093/evolut/qpaf073","url":null,"abstract":"Animal weapons have evolved multiple times primarily for battling for access to mates. Despite intra-sexual selection being common, exaggerated weapons have evolved relatively rarely. So why do exaggerated weapons not evolve more commonly? It has been hypothesized that three conditions are necessary for evolution of exaggerated weapons: high variance in reproductive success, patchy, high-value resources, and spatial environments conducive to one-on-one competition. Here, we test this hypothesis by performing experimental evolution in Drosophila melanogaster, utilizing heterogeneous environments where conditions facilitating territorial defense and opportunities for competitive interactions vary. We examine changes in sexually dimorphic morphology and male aggression that are predicted to occur, based on this model. We also examine whether condition dependence for sexual dimorphism has evolved after 35 and 75 generations of experimental evolution. Aggression did increase, albeit modestly, in environments that facilitate resource defense. Morphological changes are modest although with some trait specific changes to allometry, generally in the opposite direction of our predictions. Condition dependence trends in the opposite direction from those predicted by our hypothesis as well. We discuss our results in the context of the necessary conditions for the evolution of exaggerated weapons, and if, and when condition dependence may evolve.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143810851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Indirect fitness benefits can reinforce the direct fitness benefits of male mate choice. 雄性择偶的间接适宜性利益可以强化雄性择偶的直接适宜性利益。

IF 3.1 2区环境科学与生态学

Evolution Pub Date : 2025-04-09 DOI: 10.1093/evolut/qpaf071

Avigayil Lev, Abigail I Gutierrez, Aanya S Srinivasan, Calvin M Herrick, Andrew D Stewart, Alison Pischedda

{"title":"Indirect fitness benefits can reinforce the direct fitness benefits of male mate choice.","authors":"Avigayil Lev, Abigail I Gutierrez, Aanya S Srinivasan, Calvin M Herrick, Andrew D Stewart, Alison Pischedda","doi":"10.1093/evolut/qpaf071","DOIUrl":"https://doi.org/10.1093/evolut/qpaf071","url":null,"abstract":"Mating preferences frequently evolve because they confer fitness benefits to the chooser. While there is strong evidence for both direct and indirect fitness benefits in the context of female mate choice, the potential for males to receive indirect benefits from mate choice remains understudied. Male mate choice for larger female body size is widespread among ectotherms and is generally attributed to the direct fitness benefits larger females provide due to their higher fecundity. However, when female size is heritable or condition-dependent, males could also receive indirect benefits from mating with larger females in the form of increased offspring fitness. We tested this possibility in Drosophila melanogaster by first confirming the direct fitness benefits associated with large females and then comparing the fitness of offspring produced by large versus small females. Although female body size did not influence offspring juvenile viability, large females produced daughters with higher reproductive success than the daughters of small females. Males only received these indirect benefits through their daughters, however, as reproductive success did not differ significantly between the sons of large and small females. Our findings demonstrate that indirect fitness benefits can serve to reinforce the direct benefits of male mate choice, suggesting that indirect effects may play an underappreciated role in the evolution of male preferences.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143998953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The influence of temperature on courtship and mate choice in a wolf spider: implications for mating success in variable environments. 温度对狼蛛求偶和择偶的影响：对不同环境下交配成功的影响。

IF 3.1 2区环境科学与生态学

Evolution Pub Date : 2025-04-02 DOI: 10.1093/evolut/qpaf015

Malcolm F Rosenthal, Damian O Elias

{"title":"The influence of temperature on courtship and mate choice in a wolf spider: implications for mating success in variable environments.","authors":"Malcolm F Rosenthal, Damian O Elias","doi":"10.1093/evolut/qpaf015","DOIUrl":"10.1093/evolut/qpaf015","url":null,"abstract":"The selection of animal signal form often changes significantly with the environment, yet signal form may be environment-dependent. Little is known about how variation in individual responses to changing environments affects the relationship between selection and the subsequent evolution of signal traits. To address this question, we assess the effects of variation in temperature on individual signaling and mating behavior responses across temperatures in the wolf spider Schizocosa floridana. By running repeated-measures trials, we find that temperature has predictable effects on signal form, but that the performance of individual courters is not consistent across temperatures. Traits associated with courtship rate generally increase at higher temperatures but inter-individual consistency in response to temperature change is low, despite consistent female preferences for increased courtship rate at all temperatures. Interestingly, the production of the likely most recently evolved signal component, the chirp, is consistent within signalers and predicts male performance across temperatures. Despite this, female preferences for chirp duration appear only at higher temperatures. Taken together, our results suggest that individual courter responses to changing temperatures have the potential to dampen or eliminate patterns of selection that are evident across temperatures. We discuss these results in light of current research on mating behavior and sexual selection.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"641-649"},"PeriodicalIF":3.1,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143052019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Digest: Clinal variation in plant traits is shaped by plastic and evolutionary responses to water regimes and herbivory. 摘要：植物性状的临床变异是由对水和草食的可塑性和进化反应形成的。

IF 3.1 2区环境科学与生态学

Evolution Pub Date : 2025-04-02 DOI: 10.1093/evolut/qpaf022

Gen-Chang Hsu

引用次数: 0

Metabolic remodeling and de novo mutations transcend cryptic variation as drivers of adaptation in yeast. 代谢重塑和新生突变超越了隐性变异，成为酵母适应的驱动因素。

IF 3.1 2区环境科学与生态学

Evolution Pub Date : 2025-04-02 DOI: 10.1093/evolut/qpaf019

Shreya Routh, Richard J Lindsay, Ivana Gudelj, Riddhiman Dhar

{"title":"Metabolic remodeling and de novo mutations transcend cryptic variation as drivers of adaptation in yeast.","authors":"Shreya Routh, Richard J Lindsay, Ivana Gudelj, Riddhiman Dhar","doi":"10.1093/evolut/qpaf019","DOIUrl":"10.1093/evolut/qpaf019","url":null,"abstract":"Many organisms live in predictable environments with periodic variations in growth conditions. Adaptation to these conditions can lead to loss of nonessential functions, which could be maladaptive in new environments. Alternatively, living in a predictable environment can allow populations to accumulate cryptic genetic variation that may have no fitness benefit in that condition, but can facilitate adaptation to new environments. However, how these processes together shape the fitness of populations growing in predictable environments remains unclear. Through laboratory evolution experiments in yeast, we show that populations grown in a nutrient-rich environment for 1,000 generations generally have reduced fitness and lower adaptability to novel stressful environments. These populations showed metabolic remodeling and increased lipid accumulation in rich medium which seemed to provide osmotic protection in salt stress. Subsequent adaptation to stressors was primarily driven by de novo mutations, with very little contribution from the mutations accumulated prior to the exposure. Thus, our work suggests that without exposure to new environments, populations might lose their ability to respond effectively to these environments. Furthermore, our findings highlight a major role of exaptation and de novo mutations in adaptation to new environments but do not reveal a significant contribution of cryptic variation in this process.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"650-664"},"PeriodicalIF":3.1,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143364136","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On the origin of an insular hybrid butterfly lineage. 关于岛屿杂交蝴蝶谱系的起源。

IF 3.1 2区环境科学与生态学

Evolution Pub Date : 2025-04-02 DOI: 10.1093/evolut/qpaf017

Jesper Boman, Zachary J Nolen, Niclas Backström

{"title":"On the origin of an insular hybrid butterfly lineage.","authors":"Jesper Boman, Zachary J Nolen, Niclas Backström","doi":"10.1093/evolut/qpaf017","DOIUrl":"10.1093/evolut/qpaf017","url":null,"abstract":"A new species can form through hybridization between species. Hybrid speciation in animals has been intensely debated, partly because hard evidence for the process has been difficult to obtain. Here, we report the discovery of a European hybrid butterfly lineage, a finding that can be considered surprising given the intense and long-term study of European butterflies. The lineage we describe is mainly inhabiting an island in the Baltic Sea and was previously designated as a subspecies (horkei) of one of the parental species (Aricia artaxerxes). By analyzing whole-genome resequencing data and developing a novel cluster analysis based on historical recombination events (Fisher junctions), we determine that horkei originated by hybridization between the nonsister species A. artaxerxes and A. agestis. This hybridization event occurred approximately 54,000 years ago, predating the last glaciation of the current distribution range. Horkei must therefore have persisted long enough to be able to colonize its current range, despite that this area lies between the current distributions of the parental species. The hybrid origin, the maintenance of genomic integrity across times of dramatic climate change, and the expression of a combination of parental traits suggest that horkei could be in the process of hybrid speciation.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"510-524"},"PeriodicalIF":3.1,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143052008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Divergence in genetic (co)variances and the alignment of gmax with phenotypic divergence. 遗传（co）变异的差异和gmax与表型差异的比对。

IF 3.1 2区环境科学与生态学

Evolution Pub Date : 2025-04-02 DOI: 10.1093/evolut/qpaf009

Will M C Jarvis, Vincent Careau, Howard D Rundle

{"title":"Divergence in genetic (co)variances and the alignment of gmax with phenotypic divergence.","authors":"Will M C Jarvis, Vincent Careau, Howard D Rundle","doi":"10.1093/evolut/qpaf009","DOIUrl":"10.1093/evolut/qpaf009","url":null,"abstract":"To better understand the sources of biological diversity in nature, we need information on the mechanisms underlying population divergence. Biological systems with patterns of naturally occurring adaptive variation among populations can provide insight into the genetic architecture of diverging traits and the influence of genetic constraints on responses to selection. Using a system of reproductive character displacement in the North American mushroom-feeding fly Drosophila subquinaria, we assessed patterns of genetic (co)variance among a suite of chemical signaling traits and divergence in this pattern among populations. D. subquinaria exhibits stronger reproductive isolation against the closely related Drosophila recens in sympatry, where both female mating preferences and male chemical signaling traits have diverged from the ancestral allopatric populations. We collected 3 wild populations from each region and, in the lab, characterized the phenotypic divergence in these traits, as well as the additive genetic (co)variance structure (G-matrix), via replicate breeding designs. We found divergence between allopatric and sympatric D. subquinaria in the shape and size of the G-matrix, and that the leading axis of genetic variance (gmax) had changed in sympatry to come into alignment with the primary axis of phenotypic divergence between the sympatric and allopatric regions.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"597-610"},"PeriodicalIF":3.1,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143002647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0