Evolution最新文献_第3页

No evidence for transgenerational immune priming in Daphnia dentifera. 没有证据表明齿水蚤存在跨代免疫启动。

IF 3 2区环境科学与生态学

Evolution Pub Date : 2026-10-01 DOI: 10.1093/evolut/qpag136

Elizabeth S Davenport, Kristina M McIntire, Marcin K Dziuba, Cristian Huerta, Meghan A Duffy

{"title":"No evidence for transgenerational immune priming in Daphnia dentifera.","authors":"Elizabeth S Davenport, Kristina M McIntire, Marcin K Dziuba, Cristian Huerta, Meghan A Duffy","doi":"10.1093/evolut/qpag136","DOIUrl":"10.1093/evolut/qpag136","url":null,"abstract":"Transgenerational immune priming increases the resistance or tolerance of offspring from pathogen-exposed parents. This phenomenon can have substantial ecological and evolutionary consequences, highlighting the importance of understanding its generality both across host taxa and within a host species. Transgenerational immune priming has been reported in multiple invertebrate species, but the robustness and generality of priming in offspring is not clear. For instance, prior studies using Daphnia spp. found contrasting results for transgenerational immune priming. Our study addresses multiple questions about transgenerational immune priming using 3 clones of Daphnia dentifera and 3 pathogen species. We collected offspring from mothers either unexposed or exposed to pathogens and then exposed offspring to either the same pathogen as the maternal exposure (a homologous challenge) or a different pathogen (a heterologous challenge). We measured offspring susceptibility for all treatments and pathogen burden for the 2 \"obligate killer\" pathogens. We did not find any evidence of transgenerational immune priming related to offspring susceptibility. Following a heterologous challenge, one clone showed a reduction in spore burden of one pathogen, which may indicate increased tolerance. Our results suggest that transgenerational immune priming is not a consistent or strong factor influencing disease dynamics in the D. dentifera system.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"2287-2297"},"PeriodicalIF":3.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148577539","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

Association with dynamic habitats disrupts speciation and reduces the efficacy of purifying selection in flightless beetles. 与动态栖息地的联系破坏了物种形成，降低了不会飞的甲虫净化选择的效率。

IF 3 2区环境科学与生态学

Evolution Pub Date : 2026-10-01 DOI: 10.1093/evolut/qpag134

Emmanouil Meramveliotakis, Konstantinos Ntatsopoulos, Alfried P Vogler, Anna Papadopoulou

{"title":"Association with dynamic habitats disrupts speciation and reduces the efficacy of purifying selection in flightless beetles.","authors":"Emmanouil Meramveliotakis, Konstantinos Ntatsopoulos, Alfried P Vogler, Anna Papadopoulou","doi":"10.1093/evolut/qpag134","DOIUrl":"10.1093/evolut/qpag134","url":null,"abstract":"Association with temporally dynamic habitats has been proposed as a strong predictor of effective population size (Ne) and speciation rates, and thus also potentially of molecular evolution rates, but empirical insights remain limited. We use a genomic dataset of over 2,000 single-copy orthologs to evaluate how habitat association shapes molecular evolution in closely related flightless beetle lineages (Coleoptera: Tenebrionidae: Eutagenia), co-distributed across Eastern Mediterranean islands. The focal taxa occupy either dynamic coastal sand dunes or stable compact-soil habitats but share uniform life-history traits and morphology. Species delimitation analyses identified a single widespread coastal dune species, whereas the stable-habitat clade has diversified into nine allopatric species across the same geographic space and timeframe. Despite its wide distribution, the dynamic-habitat lineage exhibits the lowest long-term Ne and accordingly the highest median nonsynonymous-to-synonymous substitution rate ratio (dN/dS), yet its total substitution rate is not significantly higher. We propose that recurrent local population extinction in dynamic habitats hinders the completion of speciation and reduces the efficacy of purifying selection, thus elevating the dN/dS ratio. More broadly, these findings indicate that diversification and molecular evolution rates may become decoupled under recurrent population turnover, a hypothesis that requires further empirical and theoretical investigation.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"2171-2186"},"PeriodicalIF":3.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148548351","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

Recent hybridization burst in diploid-tetraploid Cardamine contact zones in the Apennines: are allotriploids threatening the persistence of parental species? 亚平宁地区二倍体-四倍体小豆碱接触带的杂交爆发：异体三倍体是否威胁到亲本物种的持久性？

IF 3 2区环境科学与生态学

Evolution Pub Date : 2026-10-01 DOI: 10.1093/evolut/qpag141

Hana Majerová, Adam Kantor, Marek Šlenker, Karol Marhold, Terezie Mandáková, Fabio Conti, Anna Rita Frattaroli, Judita Zozomová-Lihová

{"title":"Recent hybridization burst in diploid-tetraploid Cardamine contact zones in the Apennines: are allotriploids threatening the persistence of parental species?","authors":"Hana Majerová, Adam Kantor, Marek Šlenker, Karol Marhold, Terezie Mandáková, Fabio Conti, Anna Rita Frattaroli, Judita Zozomová-Lihová","doi":"10.1093/evolut/qpag141","DOIUrl":"10.1093/evolut/qpag141","url":null,"abstract":"Differences in ploidy levels represent a significant barrier to interspecific gene flow, but growing evidence from natural and experimental systems suggests that this barrier may not be as strong as commonly believed. In this study, we aimed to examine patterns of interploidy hybridization between two ecologically similar and partially sympatric wetland perennials in the central Apennines: diploid Cardamine apennina and allotetraploid C. amporitana. Our detailed chromosomal, flow cytometric, and genomic (RADseq) analyses revealed a strikingly high frequency of allotriploids across multiple sites, with no evidence of backcrossing, later-generation hybrids, or higher-level allopolyploids. Contrary to expectations, clonal propagation is not the primary mechanism underlying the observed abundance of triploids. Instead, a high hybridization rate with recurrent, bidirectional, and polytopic hybrid formation, together with the presumed longevity of triploid individuals, appears to explain their persistence. Our findings also raise two key issues: the possible triggers of this apparently recent burst of hybridization, and the potential long-term consequences of frequent allotriploid formation for the survival of the parental (sub)endemic species in the Apennines. From a broader perspective, this study underscores the evolutionary significance and dynamics of species contact zones.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"2230-2244"},"PeriodicalIF":3.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148677657","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: Local adaptation of dormancy onset cues in a species expanding its range. 摘要：一个物种在扩大其范围的过程中对休眠开始线索的局部适应。

IF 3 2区环境科学与生态学

Evolution Pub Date : 2026-10-01 DOI: 10.1093/evolut/qpag147

Tania A Perroux

引用次数: 0

Balancing selection in a polymorphic salamander population. 多态蝾螈种群的平衡选择。

IF 3 2区环境科学与生态学

Evolution Pub Date : 2026-10-01 DOI: 10.1093/evolut/qpag140

Benjamin M Fitzpatrick

{"title":"Balancing selection in a polymorphic salamander population.","authors":"Benjamin M Fitzpatrick","doi":"10.1093/evolut/qpag140","DOIUrl":"10.1093/evolut/qpag140","url":null,"abstract":"Color polymorphism within populations has fascinated biologists for generations because theory predicts eventual loss of polymorphism without some form of balancing selection. However, it is challenging to distinguish a balanced polymorphism from one slowly changing via genetic drift. I used a 20-year time series to evaluate balancing selection in a population of salamanders (Plethodon ventralis) that vary in the presence of a dorsal stripe (possibly a form of disruptive coloration). Time series analysis supported balancing selection, which might be caused by negative frequency-dependent selection, heterozygote advantage, selection-migration balance, or environmental fluctuations. Polymorphism in small cryptic animals is generally thought to be stabilized by frequency-dependent predation, and I hypothesized that if selection was driven by visual predators, it would be apparent only during the active season, not when salamanders were hidden underground. Analyzing the time series by season supported that hypothesis. Dynamics over the summer inactive season were consistent with a random walk, but during the winter active season there was a strong tendency to converge toward an equilibrium of approximately 30% striped individuals. This is clear evidence of balancing selection, and I argue that frequency-dependent predation is the most likely explanation, but further work is needed to test alternative hypotheses.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"2298-2305"},"PeriodicalIF":3.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148677660","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

Evolvability of marine dispersal traits related to larval swimming and reproductive strategy. 与幼虫游动和繁殖策略相关的海洋扩散特征的进化。

IF 3 2区环境科学与生态学

Evolution Pub Date : 2026-10-01 DOI: 10.1093/evolut/qpag145

Jackson A Powell, Frederick I Archer, Scott C Burgess

{"title":"Evolvability of marine dispersal traits related to larval swimming and reproductive strategy.","authors":"Jackson A Powell, Frederick I Archer, Scott C Burgess","doi":"10.1093/evolut/qpag145","DOIUrl":"10.1093/evolut/qpag145","url":null,"abstract":"While theory has long explained how selection can favor dispersal, we know much less about the capacity for dispersal to evolve in natural populations. One challenge is to identify how heritable genetic variation in multiple dispersal traits aligns with directions of selection on these traits. Therefore, we used an experimental pedigree in the solitary ascidian Molgula occidentalis and constructed Bayesian quantitative genetic models to estimate evolvability of dispersal traits. We compared the evolvability of dispersal traits by (1) assessing the average evolvability of the G-matrix, (2) considering specific directions of selection hypothesized from biomechanical and life history reasoning, and (3) estimating the predicted response to selection from the observed additive genetic covariance between dispersal traits and fitness components. There was greater additive genetic variation in tail length than in trunk length, as there was for maternal effect and dominance variance. As a result, selection for longer tails (faster swimming) was associated with a higher evolvability compared to selection for shorter tails and longer trunks (energetic efficiency) or shorter tails and trunks (fecundity). The predicted response to selection at hatching and settlement, based on observed additive genetic covariances, was similar for trunk and tail length. Overall, evolutionary change in dispersal distances would occur more rapidly under selection on swimming ability than on energetic economy and fecundity. Furthermore, multiple lineages within Molgulidae have repeatedly diverged along the larval morphology axis in which we measured the highest evolvability. Our results demonstrate the utility of combining estimates of evolvability with hypothesized and observed selection gradients.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"2273-2286"},"PeriodicalIF":3.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148697334","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

Replicated evolution and environmental reversal reveal strong correlated response in a polyphenism. 重复进化和环境逆转揭示了多表型的强烈相关响应。

IF 3 2区环境科学与生态学

Evolution Pub Date : 2026-10-01 DOI: 10.1093/evolut/qpag143

Nicholas A Levis

{"title":"Replicated evolution and environmental reversal reveal strong correlated response in a polyphenism.","authors":"Nicholas A Levis","doi":"10.1093/evolut/qpag143","DOIUrl":"10.1093/evolut/qpag143","url":null,"abstract":"Environmental heterogeneity can favor phenotypic plasticity, but whether evolutionary responses in one environment predict trait expression after environmental change remains unclear for threshold traits. Polyphenisms-plasticity characterized by discrete alternative morphs-rely on developmental thresholds, and as a consequence, are often expected to permit partial evolutionary decoupling among alternative phenotypes. Using replicated experimental evolution and artificial selection of a resource polyphenism in the nematode Pristionchus exspectatus, which develops either a predatory morph or a microbivorous morph, I tested whether evolutionary changes in morph frequency are coupled across environments. Across independent lineages, I asked whether evolutionary increase in predatory morph frequency under selection predicted phenotypic change when populations were reared back in the ancestral environment. I found a strong positive cross-environment coupling: for both sexes, lineages showing larger evolutionary responses during the first 25 generations, and across the full 50-generation experiment, also showed larger increases in predatory morph expression after environmental reversal. Artificial selection on mouth-form produced the same pattern. These results show that even a discrete threshold trait can retain strong and repeatable correlated responses across environments, consistent with morph-frequency evolution being channeled by developmental architecture shared across environments.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"2306-2313"},"PeriodicalIF":3.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148790045","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

Modularity underlies the morphological evolution of Appalachian salamanders. 模块化是阿巴拉契亚蝾螈形态进化的基础。

IF 3 2区环境科学与生态学

Evolution Pub Date : 2026-10-01 DOI: 10.1093/evolut/qpag144

Dartagnan G Mullins, Edward D Burress

{"title":"Modularity underlies the morphological evolution of Appalachian salamanders.","authors":"Dartagnan G Mullins, Edward D Burress","doi":"10.1093/evolut/qpag144","DOIUrl":"10.1093/evolut/qpag144","url":null,"abstract":"Modularity is a pattern whereby traits evolve as inter-related systems, resulting in lower covariation between modules than within. Modularity may facilitate diversification by permitting the phenotype to independently respond to selection. The Appalachian Mountains are a biodiversity hotspot for lungless salamanders (Plethodontidae). Despite their ecological diversity, putative catalysts of their radiation in the Appalachians are poorly understood. We test whether (i) Appalachian salamanders exhibit modularity in functional, morphological characters and (ii) if the rate of evolution-a fundamental macroevolutionary signal of ecological opportunity-varies among modules and if their rates are correlated. We find that Appalachian salamanders exhibit modularity under two different models in which their head, trunk, limbs, and tail or the head, body, and limbs act as separate modules. The three major clades, Plethodon, Eurycea, and Desmognathus, vary in the presence and extent of modularity. Across Appalachian salamanders, modules exhibit nonsignificant differences in rates of evolution (∼1.5-fold), with the trunk and tail modules exhibiting the slowest and fastest rates, respectively. We also find that the rate of modular evolution can be highly correlated, suggesting that modules may respond similarly to ecological opportunity. These results suggest that modularity underlies the morphological diversity of Appalachian salamanders by permitting localized regions of the phenotype to respond independently to selection, but not evolve at different rates.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"2259-2272"},"PeriodicalIF":3.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148705982","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: Fire-driven pollination niches maintain floral polymorphism. 摘要：火驱动的授粉生态位维持了花的多态性。

IF 3 2区环境科学与生态学

Evolution Pub Date : 2026-10-01 DOI: 10.1093/evolut/qpag155

Yedra García

引用次数: 0

Evolutionary drivers of vocal amplitude in birds. 鸟类声音振幅的进化驱动因素。

IF 3 2区环境科学与生态学

Evolution Pub Date : 2026-09-29 DOI: 10.1093/evolut/qpag153

João C T Menezes, Jeffrey Podos

{"title":"Evolutionary drivers of vocal amplitude in birds.","authors":"João C T Menezes, Jeffrey Podos","doi":"10.1093/evolut/qpag153","DOIUrl":"https://doi.org/10.1093/evolut/qpag153","url":null,"abstract":"Vocal amplitude is crucial for acoustic communication because it determines how far a sound travels and can convey valuable information about signal senders to signal receivers. Yet, until recently, amplitude had received limited attention in the literature mainly because of operational challenges in its measurement. As a result, fundamental questions about amplitude remain largely unanswered even in one of the most extensively studied group of singers-birds. Here, we set out to answer two such questions: to what degree do birds vary in how loud they can vocalize, and what evolutionary factors drive this variation? Using original amplitude data from 123 bird species, we show that maximum measured amplitudes vary broadly across species-from 64 dB LAeq,20ms at 1 m in a species of hummingbird to 122 dB in a species of cotinga-, with two new species emerging as candidates for the world's loudest bird (as yet identified). Regarding evolutionary drivers of amplitude, we found that species with larger body sizes and larger beak gape widths tend to achieve higher maximum amplitudes. By contrast, ecological predictors assessed-aerial mobility, habitat density, and mating system-had no unequivocal effect on maximum amplitude. By establishing connections between morphology and vocal amplitude, our results represent a step forward in uncovering what enables birds to produce the loudest acoustic signals of all terrestrial fauna.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2026-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149074041","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