Evolution最新文献_第10页

Effect of assortative mating and sexual selection on polygenic barriers to gene flow. 分类交配和性选择对基因流动多基因障碍的影响。

IF 3.1 2区环境科学与生态学

Evolution Pub Date : 2025-07-18 DOI: 10.1093/evolut/qpaf047

Parvathy Surendranadh, Himani Sachdeva

{"title":"Effect of assortative mating and sexual selection on polygenic barriers to gene flow.","authors":"Parvathy Surendranadh, Himani Sachdeva","doi":"10.1093/evolut/qpaf047","DOIUrl":"10.1093/evolut/qpaf047","url":null,"abstract":"Assortative mating and sexual selection are widespread in nature and can play an important role in speciation by facilitating the buildup and maintenance of reproductive isolation (RI). However, their contribution to genome-wide suppression of gene flow during RI is rarely quantified. Here, we consider a polygenic \"magic\" trait that is divergently selected across two populations connected by migration, while also serving as the basis of assortative mating, thus generating sexual selection on one or both sexes. We obtain theoretical predictions for divergence at individual trait loci by assuming that the effect of all other loci on any locus can be encapsulated via an effective migration rate, which bears a simple relationship to measurable fitness components of migrants and various early-generation hybrids. Our analysis clarifies how \"tipping points\" (characterized by an abrupt collapse of adaptive divergence) arise, and when assortative mating can shift the critical level of migration beyond which divergence collapses. We quantify the relative contributions of viability and sexual selection to genome-wide barriers to gene flow and discuss how these depend on existing divergence levels. Our results suggest that effective migration rates provide a useful way of understanding genomic divergence, even in scenarios involving multiple, interacting mechanisms of RI.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"1185-1198"},"PeriodicalIF":3.1,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144101679","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 evolution of suppressed recombination between sex chromosomes and the lengths of evolutionary strata. 性染色体间抑制重组的演化与进化层的长度。

IF 3.1 2区环境科学与生态学

Evolution Pub Date : 2025-07-18 DOI: 10.1093/evolut/qpaf045

Colin Olito, Jessica K Abbott

{"title":"The evolution of suppressed recombination between sex chromosomes and the lengths of evolutionary strata.","authors":"Colin Olito, Jessica K Abbott","doi":"10.1093/evolut/qpaf045","DOIUrl":"10.1093/evolut/qpaf045","url":null,"abstract":"The idea that sex-differences in selection drive the evolution of suppressed recombination between sex chromosomes is well-developed in population genetics. Yet, despite a now classic body of theory, empirical evidence that sexually antagonistic (SA) selection drives the evolution of recombination arrest remains equivocal and alternative hypotheses underdeveloped. Here, we investigate whether the length of \"evolutionary strata\" formed by chromosomal inversions (or other large-effect recombination modifiers) expanding the nonrecombining sex-linked region (SLR) on sex chromosomes can be informative of how selection influenced their fixation. We develop population genetic models to show how the length of an SLR-expanding inversion and the presence of partially recessive deleterious mutational variation affect the fixation probability of three different classes of inversions: (i) intrinsically neutral, (ii) directly beneficial (i.e., due to breakpoint or positional effects), and (iii) those capturing SA loci. Our models indicate that inversions capturing an SA locus initially in linkage disequilibrium with the ancestral SLR exhibit a strong fixation bias toward small inversions, while neutral, beneficial, and inversions capturing a genetically unlinked SA locus tend to favor larger inversions and exhibit similar distributions of fixed inversion lengths. The footprint of evolutionary stratum size left behind by different selection regimes is strongly influenced by parameters affecting the deleterious mutation load, the physical position of the ancestral SLR, and the distribution of new inversion lengths.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"1371-1385"},"PeriodicalIF":3.1,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143991298","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

Retraction and Replacement of: 'The evolution of suppressed recombination between sex chromosomes and the lengths of evolutionary strata'. 撤回和替换：“性染色体间抑制重组的进化与进化层的长度”。

IF 3.1 2区环境科学与生态学

Evolution Pub Date : 2025-07-18 DOI: 10.1093/evolut/qpaf063

引用次数: 0

Natural selection at multiple scales. 多重尺度的自然选择。

IF 3.1 2区环境科学与生态学

Evolution Pub Date : 2025-07-18 DOI: 10.1093/evolut/qpaf037

Steven A Frank

{"title":"Natural selection at multiple scales.","authors":"Steven A Frank","doi":"10.1093/evolut/qpaf037","DOIUrl":"10.1093/evolut/qpaf037","url":null,"abstract":"Natural selection acts on traits at different scales, often with opposing consequences. This article identifies the particular forces that act at each scale and how those forces combine to determine the overall evolutionary outcome. A series of extended models derive from the tragedy of the commons, illustrating opposing forces at different scales. Examples include the primary tension between conflict and cooperation and the evolution of virulence, sex ratios, dispersal, and evolvability. The unified analysis subsumes interactions within and between species by generalizing multitrait interactions. Expanded notions of recombination and cotransmission arise. The core theoretical approach isolates the fundamental forces of selection, including marginal valuation, correlation between interacting entities, and reproductive value. Those fundamental forces act as partial causes that combine at different temporal and spatial scales. Modeling focuses on statics, in the sense of how different forces at various scales tend to oppose each other, ultimately combining to shape traits. That type of static analysis emphasizes explanation rather than the calculation of dynamics. The article builds on the duality between explanation versus calculation in terms of statics versus dynamics. The literature often poses that duality as a controversy, whereas this article develops the pair as complementary tools that together provide deeper understanding. Along the way, the unified approach clarifies the subtle distinctions between kin selection, multilevel selection, and inclusive fitness, subsuming these topics into the broader perspectives of fundamental forces and multiple scales.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"1166-1184"},"PeriodicalIF":3.1,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143596374","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

Predicting the prevalence of genetic trade-offs among adaptive substitutions. 预测适应性替代中基因权衡的普遍性。

IF 3.1 2区环境科学与生态学

Evolution Pub Date : 2025-07-18 DOI: 10.1093/evolut/qpaf061

Tim Connallon, Peter Czuppon, Colin Olito, Debora Goedert, Hanna Kokko, Angela Nava-Bolaños, Sofie Nilén, Erik I Svensson, Martyna Zwoinska, Ludovic Dutoit, Filip Ruzicka

{"title":"Predicting the prevalence of genetic trade-offs among adaptive substitutions.","authors":"Tim Connallon, Peter Czuppon, Colin Olito, Debora Goedert, Hanna Kokko, Angela Nava-Bolaños, Sofie Nilén, Erik I Svensson, Martyna Zwoinska, Ludovic Dutoit, Filip Ruzicka","doi":"10.1093/evolut/qpaf061","DOIUrl":"10.1093/evolut/qpaf061","url":null,"abstract":"Genetic trade-offs-which occur when variants that are beneficial in some contexts of natural selection are harmful in others-can influence a wide range of evolutionary phenomena, from the maintenance of genetic variation to the evolution of aging and sex differences. An extensive body of evolutionary theory has focused on the consequences of such trade-offs, and recent analyses of Fisher's geometric model have further quantified the expected proportion of new mutations that exhibit trade-offs. However, the theory remains silent regarding the prevalence of trade-offs among the variants that contribute to adaptation. Here, we extend Fisher's geometric model to predict the prevalence of trade-offs among the adaptive mutations that become established or fixed in a population. We consider trade-offs between sexes, habitats, fitness components, and temporally fluctuating environments. In all 4 scenarios, trade-off alleles are consistently under-represented among established relative to new beneficial mutations-an effect that arises from the greater susceptibility of trade-off alleles to genetic drift. Adaptation during a population size decline exacerbates this deficit of trade-offs among established mutations, whereas population expansions dampen it. Consequently, threatened populations should primarily adapt using unconditionally beneficial alleles, while invasive populations are more prone to adaptation using variants that exhibit trade-offs.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"1243-1255"},"PeriodicalIF":3.1,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143700099","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 : 2025-07-18 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":"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, nonsexual 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":"1299-1309"},"PeriodicalIF":3.1,"publicationDate":"2025-07-18","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

Mixed network structure in a coevolving host-parasite system. 宿主-寄生虫共同进化系统中的混合网络结构。

IF 3.1 2区环境科学与生态学

Evolution Pub Date : 2025-07-18 DOI: 10.1093/evolut/qpaf081

Maridel Fredericksen, Dieter Ebert

{"title":"Mixed network structure in a coevolving host-parasite system.","authors":"Maridel Fredericksen, Dieter Ebert","doi":"10.1093/evolut/qpaf081","DOIUrl":"10.1093/evolut/qpaf081","url":null,"abstract":"Genetic interactions between parasites and hosts determine how these antagonists coevolve. Networks depicting infection outcomes between host and parasite genotypes can be analyzed to characterize phenotype-level interactions. However, an open question is whether such network analyses can be used to infer allele-level interaction matrices and draw conclusions about coevolution. We address this question in a system coevolving by Red Queen dynamics and where a matching-allele model has been observed: the virulent bacterium Pasteuria ramosa and its crustacean host, Daphnia magna. We analyze infectivity representing the phenotype under selection. Additionally, because infectivity and resistance are polygenic and depend in part on the attachment site of the parasite spores, we analyze each of 5 attachment sites separately. We find the attachment site-specific matrices vary strongly in network structure. Foregut attachment shows only weak evidence of the modular network structure predicted from matching-allele models. For 3 other attachment sites, we find the more resistant hosts tend to be infected by the more generalist parasites, creating nested network structures. The matrices of the overall phenotype tend toward modular network structures. Overall, our findings suggest network analysis is a weak tool to predict the genetic interaction model underlying coevolution.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"1349-1360"},"PeriodicalIF":3.1,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143984731","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

Genomic discordance throws a wrench in the parallel speciation hypothesis for scincid lizards. 基因组的不一致给蜥蜴平行物种形成假说带来了麻烦。

IF 3.1 2区环境科学与生态学

Evolution Pub Date : 2025-07-18 DOI: 10.1093/evolut/qpaf059

Jonathan Q Richmond, Andrew D Gottscho, Elizabeth L Jockusch, Adam D Leaché, Robert N Fisher, Tod W Reeder

{"title":"Genomic discordance throws a wrench in the parallel speciation hypothesis for scincid lizards.","authors":"Jonathan Q Richmond, Andrew D Gottscho, Elizabeth L Jockusch, Adam D Leaché, Robert N Fisher, Tod W Reeder","doi":"10.1093/evolut/qpaf059","DOIUrl":"10.1093/evolut/qpaf059","url":null,"abstract":"Parallel evolution of the same reproductive isolation barrier within a taxon is an indicator of ecology's role in speciation (i.e., parallel speciation), yet spatiotemporal variability in the efficacy of the barrier can present challenges to retracing how it evolved. Here, we revisit the evidence for a candidate example of parallel speciation in a clade of scincid lizards (the Plestiodon skiltonianus complex) using genomic data, with emphasis on determining whether hybridization may have confounded the phylogenetic signals of parallelism for this group. Our results show a striking case of genealogical discordance, in which mitochondrial loci support multiple origins of a derived large-bodied morphotype (Plestiodon gilberti) within a small-bodied ancestor (Plestiodon skiltonianus), whereas nuclear loci indicate a single origin. We attribute the discordance to separate, temporally-spaced hybridization events that led to asymmetric capture of P. skiltonianus mitochondria in different regional lineages of P. gilberti. Nuclear introgression showed a similar directional bias but was less pervasive. We demonstrate how a mechanical reproductive barrier previously identified for this group explains the asymmetry of mitochondrial introgression, given that hybrid matings are most likely when the male is P. gilberti and the female is P. skiltonianus. We then use permutation tests of morphological data to provide evidence that the mechanical barrier is less stringent in areas where hybridization is inferred to have occurred. Our results demonstrate how biased hybridization can dictate which genetic variants are transmitted between species and emphasize the importance of accounting for introgression and deep coalescence in identifying phyletic signatures of parallel speciation.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"1386-1399"},"PeriodicalIF":3.1,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143691530","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 : 2025-07-18 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":"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":"1271-1281"},"PeriodicalIF":3.1,"publicationDate":"2025-07-18","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

Parental care drives the evolution of male reproductive accessory glands across ray-finned fishes. 父母的关爱推动了魟形鳍鱼类雄性生殖附属腺体的进化。

IF 3.1 2区环境科学与生态学

Evolution Pub Date : 2025-07-18 DOI: 10.1093/evolut/qpaf062

Lucas Eckert, Jessica S Miller, John L Fitzpatrick, Sigal Balshine, Benjamin M Bolker

{"title":"Parental care drives the evolution of male reproductive accessory glands across ray-finned fishes.","authors":"Lucas Eckert, Jessica S Miller, John L Fitzpatrick, Sigal Balshine, Benjamin M Bolker","doi":"10.1093/evolut/qpaf062","DOIUrl":"10.1093/evolut/qpaf062","url":null,"abstract":"Reproductive accessory glands are organs involved in reproduction that do not directly produce or release gametes but can play crucial roles in securing reproductive success. In fishes, the 2 leading hypotheses about why accessory glands evolved are (1) in response to sperm competition, or (2) to facilitate parental care activities. Here, we investigate the evolutionary history of accessory glands and test these hypotheses by estimating quantitative differences in evolutionary rates. We found that accessory glands are present in 116 of the 607 sampled species of ray-finned fishes, representing 26/267 families. We estimated that accessory glands have arisen independently ~20 times and that these glands were gained 5.8 times faster in lineages with male parental care, compared to those without male care, supporting the hypothesis that they evolved to facilitate care. In contrast, group spawning, used as a proxy for sperm competition risk, seemed to select against the evolution of accessory glands, as lineages exhibiting group spawning gained accessory glands 3.9 times slower than those with pair spawning (though this failed to reach statistical significance). This study provides new insights into the evolutionary history of accessory glands in fishes and highlights the importance of parental care in shaping reproductive anatomy.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"1143-1152"},"PeriodicalIF":3.1,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143676753","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