Evolution Letters最新文献_第3页

Pace of life predicts parasite resistance and fecundity tolerance, but not mortality tolerance, among Trinidadian guppies, Poecilia reticulata. 特立尼达孔雀鱼（Poecilia reticulata）的生活节奏可以预测对寄生虫的抵抗力和繁殖能力的耐受性，但不能预测死亡率的耐受性。

IF 4.3 1区生物学

Evolution Letters Pub Date : 2026-03-31 eCollection Date: 2026-06-01 DOI: 10.1093/evlett/qrag011

Sadie Evanov, Faith Rovenolt, Natalia Tepox-Vivar, Rina Zambetti, Kelley Troutman, Vineet Nayak, Kaylee Mulligan, Saisreetha Midde, Noah T Leith, Jessica F Stephenson

{"title":"Pace of life predicts parasite resistance and fecundity tolerance, but not mortality tolerance, among Trinidadian guppies, Poecilia reticulata.","authors":"Sadie Evanov, Faith Rovenolt, Natalia Tepox-Vivar, Rina Zambetti, Kelley Troutman, Vineet Nayak, Kaylee Mulligan, Saisreetha Midde, Noah T Leith, Jessica F Stephenson","doi":"10.1093/evlett/qrag011","DOIUrl":"10.1093/evlett/qrag011","url":null,"abstract":"Host defense against parasites can include limiting parasite growth, \"resistance,\" limiting the mortality cost of infection, \"mortality tolerance,\" and limiting the reproductive cost of infection, \"fecundity tolerance.\" Theoretically, these 3 host strategies have very different epidemiological and evolutionary outcomes. In particular, because mortality tolerance increases parasite population size, it is under strong positive frequency-dependent selection and may therefore be less variable between populations than either resistance or fecundity tolerance. Additionally, host investment in each strategy can be expected to differ between populations that experience different ecological conditions. Here, we tested how populations of Trinidadian guppies Poecilia reticulata from the upper and lower courses of 3 rivers responded to experimental infection with a novel strain of Gyrodactylus turnbulli. In line with theoretical predictions, we found that lower course populations, previously shown to have faster paces of life, invested less in resistance and fecundity tolerance-but not mortality tolerance-than the upper course populations with slower paces of life. Our results indicate that this host-parasite interaction both conforms to evolutionary-epidemiological theoretical predictions, and is shaped by broader ecological conditions.","PeriodicalId":48629,"journal":{"name":"Evolution Letters","volume":"10 3","pages":"294-300"},"PeriodicalIF":4.3,"publicationDate":"2026-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13229650/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148165112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Not just mutations: inbreeding depression persists without genetic variation. 不仅仅是突变：近亲繁殖抑郁症在没有基因变异的情况下仍然存在。

IF 4.3 1区生物学

Evolution Letters Pub Date : 2026-03-28 eCollection Date: 2026-06-01 DOI: 10.1093/evlett/qrag008

Nicolás Bonel, Christoph Grunau, Patrice David

{"title":"Not just mutations: inbreeding depression persists without genetic variation.","authors":"Nicolás Bonel, Christoph Grunau, Patrice David","doi":"10.1093/evlett/qrag008","DOIUrl":"10.1093/evlett/qrag008","url":null,"abstract":"Inbreeding depression (ID)-the reduction in fitness with increasing parental relatedness-is classically attributed to the expression of recessive deleterious mutations in homozygous individuals. Yet, the assumption that ID can only arise from changes in genetic heterozygosity has rarely, if ever, been directly tested. To test this, we produced highly inbred lines (F = 0.99999997) of the freshwater snail Physa acuta and generated offspring that differed in parental relatedness (self-fertilization, sib or cousin matings) while their parents, produced by crossing two inbred lines, all shared an identical genome. Several fitness traits showed significant declines with increasing parental relatedness. These traits included juvenile survival, body size, and self-fertility, and the magnitude of their decline was equivalent to a substantial fraction of the ID observed in natural, genetically polymorphic populations of P. acuta. Individual-based simulations demonstrated that spontaneous mutation rates compatible with natural levels of ID are far too low to account for the magnitude of ID observed here. These findings suggest that non-genetic mechanisms, most plausibly involving heritable epigenetic changes, can generate ID even in genetically uniform populations. This challenges the long-standing view that ID arises exclusively from genetic homozygosity and highlights the need to investigate epigenetic contributions to ID.","PeriodicalId":48629,"journal":{"name":"Evolution Letters","volume":"10 3","pages":"269-282"},"PeriodicalIF":4.3,"publicationDate":"2026-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13229652/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148165132","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Developmental speed and chronological time exert opposing effects on the spontaneous mutation rate in Chironomus riparius. 发育速度和时间对河滨Chironomus riparius的自发突变率有相反的影响。

IF 4.3 1区生物学

Evolution Letters Pub Date : 2026-03-27 eCollection Date: 2026-06-01 DOI: 10.1093/evlett/qrag010

Burak Bulut, Markus Pfenninger

{"title":"Developmental speed and chronological time exert opposing effects on the spontaneous mutation rate in Chironomus riparius.","authors":"Burak Bulut, Markus Pfenninger","doi":"10.1093/evlett/qrag010","DOIUrl":"10.1093/evlett/qrag010","url":null,"abstract":"The spontaneous mutation rate (μ) is shaped by two distinct forces: the passage of chronological time, inevitably associated with mutation accumulation, and the speed of development, where rapid replication contributes to error rates. Disentangling these forces has been a major challenge, particularly in ectotherms. Testing the distinct predictions of the classic replication-dependent generation length hypothesis and the time-dependent accumulation model, we experimentally assessed individuals with naturally short (15 days) and long (38 days) generation time (GT), which is mainly determined by differences in developmental speed in the midge Chironomus riparius. To overcome the challenges of swarm-mating, we employed a parent-offspring pedigree reconstruction approach using pooled sequencing of siblings to infer parental allelic composition. We estimated the de novo mutation rates by whole genome sequencing. We found that Long-GT groups accumulated 1.2-fold more total mutations per generation (μ/gen), consistent with time-dependent mutagenic processes. Conversely, Short-GT groups exhibited a nearly two-fold higher mutation rate per day (μ/day) and a trend toward a transition-biased mutational spectrum (Ts/Tv ratio = 1.14 vs. 0.89), a pattern consistent with a replication-dependent errors in DNA. These results suggest that the overall mutation load is the product of these two interacting processes. Integrating our data with previous studies and life-history data, we show that the daily mutation rate followed a non-linear relationship with respect to developmental speed, and that the species' generation time mode coincides with its minimum. This suggests that the developmental speed is, amongst other factors, selected to optimize the mutational load by balancing between replication accuracy and developmental speed.","PeriodicalId":48629,"journal":{"name":"Evolution Letters","volume":"10 3","pages":"283-293"},"PeriodicalIF":4.3,"publicationDate":"2026-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13229651/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148165102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Urbanization correlates with genetic and plastic variation of Impatiens capensis flower morphology. 城市化与凤仙花形态的遗传和可塑性变异有关。

IF 4.3 1区生物学

Evolution Letters Pub Date : 2026-03-25 eCollection Date: 2026-06-01 DOI: 10.1093/evlett/qrag009

Jérôme Burkiewicz, Julie Carvalho, Sophie Caporgno, Joëlle Lafond, Céline Devaux, Étienne Normandin, Simon Joly

{"title":"Urbanization correlates with genetic and plastic variation of Impatiens capensis flower morphology.","authors":"Jérôme Burkiewicz, Julie Carvalho, Sophie Caporgno, Joëlle Lafond, Céline Devaux, Étienne Normandin, Simon Joly","doi":"10.1093/evlett/qrag009","DOIUrl":"10.1093/evlett/qrag009","url":null,"abstract":"The spectacular diversity of flowers is largely driven by pollinator-mediated selection that favors attractive flowers and effective pollen transfer. Urbanization has the potential to affect floral trait evolution by altering pollinator communities through environmental changes. Additionally, abiotic changes in urban habitats can induce phenotypic plasticity, further shaping evolutionary trajectories. We investigated how urbanization affects the genetic and plastic components of flower morphology of Impatiens capensis (Balsaminaceae) across four Canadian cities. We found that urbanization influenced the pollinator community composition and the body size of bumblebees, the species' main pollinator, although the magnitude of the size effect varied among cities. Using a combination of field surveys and a common garden experiment, our results suggest that urbanization affects sepal size-a tubular floral organ in which pollinators enter to access the nectar-through both genetic and plastic responses. While plasticity sometimes masked the genetic determination of sepal size in the field, we observed a positive correlation between the genetic component of the sepal size and bumblebee body size. These results suggest that urban habitats may drive evolutionary changes in floral traits by modifying pollinator communities.","PeriodicalId":48629,"journal":{"name":"Evolution Letters","volume":"10 3","pages":"239-252"},"PeriodicalIF":4.3,"publicationDate":"2026-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13229653/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148165090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Causes and consequences of sex-chromosome turnovers in Diptera. 双翅目性染色体翻转的原因和后果。

IF 4.3 1区生物学

Evolution Letters Pub Date : 2026-03-12 eCollection Date: 2026-06-01 DOI: 10.1093/evlett/qrag003

Lorena Layana, Melissa A Toups, Beatriz Vicoso

{"title":"Causes and consequences of sex-chromosome turnovers in Diptera.","authors":"Lorena Layana, Melissa A Toups, Beatriz Vicoso","doi":"10.1093/evlett/qrag003","DOIUrl":"10.1093/evlett/qrag003","url":null,"abstract":"Sex-chromosome systems are highly variable across animals, but how they transition from one to another is not well understood. Diptera have undergone multiple sex-chromosome turnovers and expansions while maintaining their general chromosomal content, which makes them an ideal clade to study such transitions. We analyzed more than 100 dipteran whole-genome assemblies and identified 4 new lineages that underwent sex-chromosome turnover (in addition to the 5 previously reported). We find that the majority of turnovers happened in the group Schizophora, which tend to have fewer genes on Muller element F (the chromosome homologous to the ancestral insect X chromosome) than lower dipterans, a factor previously hypothesized to facilitate turnover. Most derived X chromosomes have higher GC content than autosomes, consistent with a high prevalence of male achiasmy in Diptera. In addition, an excess of gene movement out of the X is detected for most of these new X chromosomes, and many of these moved genes have high testis expression in Drosophila, suggesting that out-of-X gene movement contributes to the long-term demasculinization of X chromosomes.","PeriodicalId":48629,"journal":{"name":"Evolution Letters","volume":"10 3","pages":"253-268"},"PeriodicalIF":4.3,"publicationDate":"2026-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13231274/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148165044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Correction to: Gestation length both shapes and is shaped by other life history traits in terrestrial eutherian mammals. 更正：在陆生真兽哺乳动物中，妊娠长度既塑造了其他生活史特征，也受其影响。

IF 3.7 1区生物学

Evolution Letters Pub Date : 2026-03-05 eCollection Date: 2026-04-01 DOI: 10.1093/evlett/qrag007

引用次数: 0

Origins of violence: evolutionary decoupling between mild and lethal conspecific aggression in primates. 暴力的起源：灵长类动物同种攻击的温和与致命的进化解耦。

IF 4.3 1区生物学

Evolution Letters Pub Date : 2026-03-03 eCollection Date: 2026-04-01 DOI: 10.1093/evlett/qrag002

Bonaventura Majolo, Samantha J Wakes, Marcello Ruta

{"title":"Origins of violence: evolutionary decoupling between mild and lethal conspecific aggression in primates.","authors":"Bonaventura Majolo, Samantha J Wakes, Marcello Ruta","doi":"10.1093/evlett/qrag002","DOIUrl":"10.1093/evlett/qrag002","url":null,"abstract":"Theories on the evolutionary origins of human aggression have often implicitly assumed that conspecific aggression is a single behavioral trait. However, different types of aggression can be described, based upon their intensity, frequency, as well as the age and sex of the opponents. The phylogenetic relationships between different types of aggression remain poorly understood. We tested the strength of correlated evolution between five distinct types of aggression in primates, namely, between- and within-group mild (i.e., not life-threatening) aggression, between- and within-group adulticide, and infanticide. We collected data on 100 free-ranging, non-provisioned and group-living species, including humans. Phylogeny had a weaker effect on mild than on lethal aggression; the effect of phylogeny was greater for adulticide, especially when we partitioned our analyses by the sex of the attacker. Furthermore, we found a positive correlation between within- and between-group adulticide, and with infanticide; these results were mostly confirmed when we considered the sex of the attacker. Conversely, the two types of mild aggression were weakly related with lethal aggression. Our study highlights the importance of treating aggression as a complex set of interrelated traits in comparative analyses. Our findings indicate that mild aggression is not closely linked to killing; thus, the escalation of aggression may follow more complex patterns that what predicted by current socio-ecological models.","PeriodicalId":48629,"journal":{"name":"Evolution Letters","volume":"10 2","pages":"207-216"},"PeriodicalIF":4.3,"publicationDate":"2026-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13043903/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147624438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tempo and drivers of 3D eye size evolution in temperate butterflies. 温带蝴蝶三维眼尺寸进化的速度和驱动因素。

IF 4.3 1区生物学

Evolution Letters Pub Date : 2026-03-03 eCollection Date: 2026-04-01 DOI: 10.1093/evlett/qrag001

Sridhar Halali, Stephen A Hall, Lars B Pettersson, Romain Carrié, Paul Caplat, Emily Baird, Niklas Wahlberg

{"title":"Tempo and drivers of 3D eye size evolution in temperate butterflies.","authors":"Sridhar Halali, Stephen A Hall, Lars B Pettersson, Romain Carrié, Paul Caplat, Emily Baird, Niklas Wahlberg","doi":"10.1093/evlett/qrag001","DOIUrl":"10.1093/evlett/qrag001","url":null,"abstract":"Sensory traits shape animal lifestyles due to the central role they play in retrieving and processing environmental information. However, being some of the most energetically expensive tissues to build and maintain, ecological demands often modulate investment in these organs. Evidence that ecology shapes the evolution of sensory traits is plenty, but is heavily biased towards vertebrates and has only recently begun to emerge in invertebrates. Here, we elucidate the macroevolution of a key sensory organ-eye size-using temperate butterflies as models. Using micro-CT X-ray imaging of pinned museum specimens, we quantified the eye size of 443 individuals comprising 59 species. Further, using 12 years of long-term monitoring data to quantify species habitat, we tested the hypothesis that forest-associated species, likely experiencing dimmer light conditions, should have larger eyes than those from open habitats. Our comparative analyses revealed tight allometric scaling between eye and wing size, and phylogeny alone explained 74% of eye size variation, with low heterogeneity in the evolutionary rates. Further, we found that habitat structure had no association with eye size. Overall, our findings indicate that allometry and shared ancestry, not ecology, shape the macroevolution of 3D eye size in temperate butterflies. We also demonstrate how non-invasive microCT imaging can be used on pinned museum specimens for studying phenotypic evolution on a macroevolutionary scale.","PeriodicalId":48629,"journal":{"name":"Evolution Letters","volume":"10 2","pages":"195-206"},"PeriodicalIF":4.3,"publicationDate":"2026-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13043916/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147624363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

AI solutions for evolutionary genomics of nonmodel species. 非模式物种进化基因组学的人工智能解决方案。

IF 4.3 1区生物学

Evolution Letters Pub Date : 2026-03-03 eCollection Date: 2026-04-01 DOI: 10.1093/evlett/qrag004

Michael DeGiorgio, Sandipan Paul Arnab, Matteo Fumagalli

{"title":"AI solutions for evolutionary genomics of nonmodel species.","authors":"Michael DeGiorgio, Sandipan Paul Arnab, Matteo Fumagalli","doi":"10.1093/evlett/qrag004","DOIUrl":"10.1093/evlett/qrag004","url":null,"abstract":"As large-scale genomic datasets are becoming abundant, new questions can now be posed in evolutionary biology. Although innovative methodological approaches are constantly developed to test these new hypotheses, their application to the study of nonmodel species is hampered by technical challenges associated with such systems. In recent years, artificial intelligence (AI) solutions, mostly in the form of deep neural networks, have been successfully introduced to analyse genomic data from nonmodel species. Here, we highlight the latest trends in deep learning to infer demographic history and signals of natural selection, and offer novel research directions to develop AI algorithms for the study of nonmodel organisms. Specifically, we identify strategies to process data missingness and uncertainty, to infer selective events in the face of unknown genomic and demographic parameters, and to generate interpretable and explainable predictions. We demonstrate our arguments by showcasing an original implementation to detect selective sweeps from an experimental setting with low sample size, uncertain sequencing data, and unknown demographic model, as typical in studies of nonmodel species. We argue that the study of nonmodel organisms is an opportunity to develop general-purpose data-driven methodologies for evolutionary inferences. Fair sharing of resources and inclusive frameworks are key to enabling researchers to benefit the most from this new wave of technologies.","PeriodicalId":48629,"journal":{"name":"Evolution Letters","volume":"10 2","pages":"135-146"},"PeriodicalIF":4.3,"publicationDate":"2026-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13043892/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147624407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The nature and prevalence of diversification rate shifts across the Tree of Life. 在整个生命之树上，多样化的性质和流行率发生了变化。

IF 4.3 1区生物学

Evolution Letters Pub Date : 2026-03-03 eCollection Date: 2026-04-01 DOI: 10.1093/evlett/qrag005

Bjørn T Kopperud, Alessio Capobianco, John T Clarke, Luis Palazzesi, Sebastian Höhna

{"title":"The nature and prevalence of diversification rate shifts across the Tree of Life.","authors":"Bjørn T Kopperud, Alessio Capobianco, John T Clarke, Luis Palazzesi, Sebastian Höhna","doi":"10.1093/evlett/qrag005","DOIUrl":"10.1093/evlett/qrag005","url":null,"abstract":"Strong disparity in species richness among organisms is well documented, but heterogeneity in the underlying diversification process is less understood. Using novel probabilistic methods, we investigate clade-specific diversification rate shifts in several species-rich phylogenies, together representing over 300,000 species across the Tree of Life. We find that diversification rate shifts are extremely prevalent across all clades, with more frequent changes in younger clades and an overall excess of upshifts, resulting in an apparent acceleration of net diversification rates. We also reveal that heterogeneity in diversification rates is related to the tempo of diversification itself. While we find support for more prevalent shifts in speciation rates than extinction rates and more upshifts than downshifts, this is partially due to data insufficiency and inference challenges. Our insights are fundamentally enabled by studying numerous large phylogenies with rigorous statistical methods, showing widespread prevalence of diversification rate shifts across the Tree of Life.","PeriodicalId":48629,"journal":{"name":"Evolution Letters","volume":"10 2","pages":"217-227"},"PeriodicalIF":4.3,"publicationDate":"2026-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13043920/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147624433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0