Evolution最新文献_第6页

Museum genomics links MC1R alleles to adaptive winter coat color polymorphism in the long-tailed weasel. 博物馆基因组学将MC1R等位基因与长尾鼬的适应性冬季毛色多态性联系起来。

IF 3 2区环境科学与生态学

Evolution Pub Date : 2026-09-07 DOI: 10.1093/evolut/qpag110

João Pimenta, Inês Miranda, Liliana Farelo, Marcela Maki Alvarenga, L Scott Mills, José Melo-Ferreira

{"title":"Museum genomics links MC1R alleles to adaptive winter coat color polymorphism in the long-tailed weasel.","authors":"João Pimenta, Inês Miranda, Liliana Farelo, Marcela Maki Alvarenga, L Scott Mills, José Melo-Ferreira","doi":"10.1093/evolut/qpag110","DOIUrl":"10.1093/evolut/qpag110","url":null,"abstract":"Understanding the architecture of biological adaptations is a major endeavor of evolutionary biology. Using Natural History collections, we study the genetic basis and evolution of white/brown winter coat color variation in the long-tailed weasel (Neogale frenata), a crucial phenological adaptation for camouflage in habitats with seasonal snow. We produced whole-genome sequencing data for museum specimens, along two winter color morph transition areas in North America, at the West and East coasts. Genome-wide association scans identified a single genomic region linked to color variation polymorphism with approximately 300 kb and 200 kb in the West and East regions, respectively, which included the pigmentation gene MC1R. We identified three MC1R alleles, two of which with deletions of nine or eight amino acids, alternatively associated with the winter brown morphs in the West and East, respectively. These deletions affect the second transmembrane domain, and in one case also the first extracellular loop, which in silico analyses predicted to impact the protein's function. Our findings show alternative intraspecific evolutionary solutions for environmental adaptation in long-tailed weasels, building on the evidence that major genes of the melanin production pathway are hotspots for recurrent and independent evolution of winter camouflage adaptation. This adaptive variation may be crucial to anchor adaptive responses facing future environmental change.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"1917-1927"},"PeriodicalIF":3.0,"publicationDate":"2026-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148307707","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

Accounting for recombination rate variation improves inference of barrier loci and reveals the role of both natural and sexual selection in an incipient bird radiation. 对重组率变异的解释改进了屏障位点的推断，揭示了自然选择和性选择在早期鸟类辐射中的作用。

IF 3 2区环境科学与生态学

Evolution Pub Date : 2026-09-07 DOI: 10.1093/evolut/qpag121

Maëva Gabrielli, Thibault Leroy, Camille Roux, Borja Milá, Christophe Thébaud, Benoit Nabholz

{"title":"Accounting for recombination rate variation improves inference of barrier loci and reveals the role of both natural and sexual selection in an incipient bird radiation.","authors":"Maëva Gabrielli, Thibault Leroy, Camille Roux, Borja Milá, Christophe Thébaud, Benoit Nabholz","doi":"10.1093/evolut/qpag121","DOIUrl":"10.1093/evolut/qpag121","url":null,"abstract":"Examining genomic patterns of differentiation across lineage pairs at different stages of the speciation continuum, in combination with recombination maps, can help disentangle the effects of linked and divergent selection and identify lineage-specific targets of selection that may act as barrier loci during speciation. Here, we apply this framework to genomic data from African and Indian Ocean bird species of the genus Zosterops (Zosteropidae) to identify candidate barrier loci between ecologically, phenotypically, and genetically distinct Reunion gray white-eye (Zosterops borbonicus) parapatric geographic forms. Using analyses that account for recombination rate variation, we show that putative targets of divergent selection are primarily located on the Z chromosome, except in comparisons between geographic forms that differ in their ecologies. Functional annotation revealed that candidate barrier loci between forms with similar environmental niches are associated with genes involved in song formation and immune function, whereas those between forms with different environmental niches are associated with adaptation to altitude, morphology, and song behavior. Our results highlight the combined roles of natural and sexual selection in the evolution of reproductive barriers in this incipient species radiation.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"1997-2014"},"PeriodicalIF":3.0,"publicationDate":"2026-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148396247","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

Mutation rate variation as the neutral byproduct of developmental and life-history diversification. 突变率变异是发育和生活史多样化的中性副产品。

IF 3 2区环境科学与生态学

Evolution Pub Date : 2026-09-07 DOI: 10.1093/evolut/qpag122

Paco Majic, Malvika Srivastava, Santiago Herrera-Álvarez, Justin Crocker

{"title":"Mutation rate variation as the neutral byproduct of developmental and life-history diversification.","authors":"Paco Majic, Malvika Srivastava, Santiago Herrera-Álvarez, Justin Crocker","doi":"10.1093/evolut/qpag122","DOIUrl":"10.1093/evolut/qpag122","url":null,"abstract":"Understanding why species differ in their rates of mutation is central to explaining patterns of molecular and phenotypic evolution. Mutation rates are often assumed to evolve primarily through selection acting on molecular mechanisms that control DNA replication, repair, and damage. Prominently, the drift-barrier hypothesis proposes that selection tends to purge mutator alleles as they tend to increase deleterious mutation rates, leading to a negative correlation between population size (Ne) and generational mutation rate (μpop). Here, we propose and test an alternative, yet compatible, framework-the life-history hypothesis of mutation rate variation-which posits that generational mutation rates diversify passively as a byproduct of diversification in developmental and life-history traits, without requiring selection acting on mutator alleles. Using developmental models integrated with evolutionary simulations, we show that the empirically observed negative correlation between effective population size Ne and μpop can arise neutrally from covariation with body size and developmental parameters. Our results also reveal that the life-history hypothesis can easily capture variation in μpop at short-to-medium evolutionary timescales, where the drift-barrier hypothesis would require a high rate of emergence of mutator alleles and a high fraction of deleterious mutations. Comparative phylogenetic analyses of mammalian clades further support this view, revealing that covariation between body mass, generation time, and μpop among closely related species is sufficient to explain the observed variation in mutation rates. Together, these findings suggest that developmental and organismal properties play a central role in shaping mutation rate diversity, providing a unified framework linking molecular evolution to the evolution of life histories in multicellular organisms.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"2015-2029"},"PeriodicalIF":3.0,"publicationDate":"2026-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148396236","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

Superorganismal anisogamy: a comparative test of an extended theory. 超生物异型通婚：一个扩展理论的比较检验。

IF 3 2区环境科学与生态学

Evolution Pub Date : 2026-09-07 DOI: 10.1093/evolut/qpag120

Philip A Downing, Jussi Lehtonen, Louis Bell-Roberts, Heikki Helanterä

{"title":"Superorganismal anisogamy: a comparative test of an extended theory.","authors":"Philip A Downing, Jussi Lehtonen, Louis Bell-Roberts, Heikki Helanterä","doi":"10.1093/evolut/qpag120","DOIUrl":"10.1093/evolut/qpag120","url":null,"abstract":"Multicellular organisms and superorganisms (e.g., ant colonies) are both products of major evolutionary transitions in individuality, and they share many analogous traits. Theory developed to explain the evolution of one such trait, anisogamy, has recently been adapted to explain its superorganismal analogue: large egg-like queens and small sperm-like males. To test this theory with comparative data, we first extended it to determine if changing how multiqueen colonies arise affects the model's predictions. We then used data from 732 ant species to investigate the effects of colony size, worker caste number, and queen number on queen size (thorax volume) and queen-male dimorphism. Queen size and queen-male size dimorphism both increased with colony size and number of worker castes, consistent with predictions. Contrary to predictions, queen size and queen-male size dimorphism were not associated with queen number. To further understand the commonalities and idiosyncrasies of evolution at different hierarchical levels, future work should consider the adaptive and nonadaptive causes for correlated evolution between queen and male, and egg and sperm sizes.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"1895-1904"},"PeriodicalIF":3.0,"publicationDate":"2026-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148374975","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

Parasitic infection and resource acquisition shape senescence through oxidative stress and energy depletion. 寄生虫感染和资源获取通过氧化应激和能量消耗形成衰老。

IF 3 2区环境科学与生态学

Evolution Pub Date : 2026-09-07 DOI: 10.1093/evolut/qpag084

Jonathan I D Hamley, Daniel Sanchez-Taltavull, Jacob C Koella, Deborah Stroka

{"title":"Parasitic infection and resource acquisition shape senescence through oxidative stress and energy depletion.","authors":"Jonathan I D Hamley, Daniel Sanchez-Taltavull, Jacob C Koella, Deborah Stroka","doi":"10.1093/evolut/qpag084","DOIUrl":"10.1093/evolut/qpag084","url":null,"abstract":"There is currently no theory which mechanistically links parasite virulence and host senescence. One driver of senescence is energy metabolism. We expect parasites to contribute to senescence because infection increases energy allocation to the immune system, which elevates oxidative stress and damages macromolecules. Additionally, parasites deplete their host's energy, which can increase the host's rate of mortality. While these within-host processes can contribute to mortality, they also determine the risk of parasite infection through epidemiological dynamics. To understand quantitatively the impact of these interactions on infection dynamics and on the evolution of within-host parasite growth (virulence), we developed a multiscale model that describes within-host and among-host dynamics. We found that infection prevalence is maximized at intermediate levels of resource acquisition only when energy depletion contributes to senescence. Furthermore, for a single resource level, there are 2 evolutionary equilibria for the parasite growth rate. This is the first time the molecular mechanisms determining senescence have been considered in the context of parasite infection, allowing us to link virulence and senescence. Our mechanistic framework provides an alternative to the virulence-transmission trade-off and reconciles conflicting empirical findings on the impact of resources on epidemiological dynamics and virulence.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"1905-1916"},"PeriodicalIF":3.0,"publicationDate":"2026-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148149109","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

Reproductive value and primary sex ratios under facultative asexual reproduction by both sexes in age-structured populations. 年龄结构人群中两性兼性无性生殖的生殖价值和主要性别比例。

IF 3 2区环境科学与生态学

Evolution Pub Date : 2026-09-07 DOI: 10.1093/evolut/qpag115

Petri Rautiala, Jussi Lehtonen

{"title":"Reproductive value and primary sex ratios under facultative asexual reproduction by both sexes in age-structured populations.","authors":"Petri Rautiala, Jussi Lehtonen","doi":"10.1093/evolut/qpag115","DOIUrl":"10.1093/evolut/qpag115","url":null,"abstract":"Reproductive value (RV) and evolutionarily stable primary sex ratios are fundamentally linked, centrally important topics in evolutionary biology. Recent theoretical studies have advanced our understanding of (i) the relationship between the RV of juveniles of the two sexes under arbitrary transmission genetics, age structures, and fecundity schedules, and (ii) sex ratio evolution under facultative asexual reproduction. Here, we unite and build upon these two strands of work. We derive the relative RVs of daughters and sons in an age-structured population with arbitrary transmission genetics when both sexes can reproduce asexually and can produce offspring of either sex. We then apply this result to sex ratio evolution and derive a general expression for the primary sex ratio of the sexual pathway. A key finding is that the primary sex ratio of the sexual pathway is unaffected by asexual reproduction by either sex when asexually produced offspring are of the same sex as their parents. If asexual reproduction produces offspring of the opposite sex, the sex ratio of the sexual pathway is altered. The post-hatching population sex ratio results derived in earlier studies are recovered as special cases.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"2130-2139"},"PeriodicalIF":3.0,"publicationDate":"2026-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148257953","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: Chromosomal architecture of behavioral isolation in marine isopods. 文摘：海洋等足类动物行为隔离的染色体结构。

IF 3 2区环境科学与生态学

Evolution Pub Date : 2026-09-07 DOI: 10.1093/evolut/qpag133

Octavio Manuel Palacios-Gimenez

引用次数: 0

Genomic contingence beneath ecological convergence: the tempo and mode of gene loss in parasitic bilaterians. 生态趋同下的基因组偶然性：寄生双侧动物基因丢失的速度和模式。

IF 3 2区环境科学与生态学

Evolution Pub Date : 2026-09-07 DOI: 10.1093/evolut/qpag126

Alexander W Clarke, Lilla Bozek, Abayomi I Babalola, Łukasz Wyrożemski, Vanessa M Paynter, Jakob Vinther, Alexander Donath, Jørgen Olesen, Henrik Glenner, Mark A McPeek, Terence M Farrell, Robert R Fitak, Pedro Martinez, Bastian Fromm, Kevin J Peterson

{"title":"Genomic contingence beneath ecological convergence: the tempo and mode of gene loss in parasitic bilaterians.","authors":"Alexander W Clarke, Lilla Bozek, Abayomi I Babalola, Łukasz Wyrożemski, Vanessa M Paynter, Jakob Vinther, Alexander Donath, Jørgen Olesen, Henrik Glenner, Mark A McPeek, Terence M Farrell, Robert R Fitak, Pedro Martinez, Bastian Fromm, Kevin J Peterson","doi":"10.1093/evolut/qpag126","DOIUrl":"10.1093/evolut/qpag126","url":null,"abstract":"Parasitism has independently evolved hundreds of times among metazoans. Nonetheless, parasites have explored only a limited range of ecologies, and they display frequent convergence in morphological, behavioral, and life-history traits. Although gene loss in particular parasitic species has been documented, it is not known if gene loss converges along the same lines as these other traits. To test for convergent gene loss, we characterized the housekeeping, regulatory, and DNA-repair complements of 48 bilaterian species, including 20 parasites belonging to 6 different bilaterian phyla. We found that different parasitic strategies do not display characteristic tempos or modes of gene loss. Further, the accelerated rates of gene loss seen in some parasites were almost always shared with their free-living relatives, indicating that the increased rate of loss preceded the rise of parasitism. Therefore, the convergent ecological strategies and adaptations that have arisen in distantly related parasitic lineages overlay contingent gene losses, which largely reflect their phylogenetic history. These results have important implications for how ecologists and evolutionary biologists should model the acquisition of parasitism, especially regarding the long-held assumption that reversion from a parasitic to a free-living state is impossible.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"2062-2081"},"PeriodicalIF":3.0,"publicationDate":"2026-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148469826","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

Sperm length and seminal receptacle length do not evolve in populations of Drosophila melanogaster adapted to larval crowding. 在适应幼虫聚集的黑腹果蝇种群中，精子长度和精囊长度没有进化。

IF 3 2区环境科学与生态学

Evolution Pub Date : 2026-09-07 DOI: 10.1093/evolut/qpag129

Harisankar Durga, Sudeep Kumar Meena, Aryan Dhansyan, T M Aswathy, B Mihir, Nagaraj Guru Prasad

{"title":"Sperm length and seminal receptacle length do not evolve in populations of Drosophila melanogaster adapted to larval crowding.","authors":"Harisankar Durga, Sudeep Kumar Meena, Aryan Dhansyan, T M Aswathy, B Mihir, Nagaraj Guru Prasad","doi":"10.1093/evolut/qpag129","DOIUrl":"10.1093/evolut/qpag129","url":null,"abstract":"Pre-adult density can affect a range of adult traits, including body size, fecundity, courtship, and ejaculate characters. However, the effects of larval density on the evolution of sperm size remain unknown. The long flagellum of Drosophila sperm is considered a costly trait that covaries with the length of the female sperm storage organ, the seminal receptacle (SR). Long sperm have a competitive advantage in long SRs. Increased larval density reduces nutritional availability, body size, and SR length, and can therefore select for altered sperm length. In the current study, we used laboratory populations of Drosophila melanogaster selected for adaptation to extreme larval crowding and their controls. We measured sperm length, SR length, and body size in the selected and control populations after growing them under high and low larval densities. Our results show that body size and SR length decrease under high larval density, regardless of the population's selection history. However, sperm length remained unchanged in both high- and low-density conditions for both selected and control populations. We found no evidence for the evolution of sperm length or SR length in populations adapted to larval crowding.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"2099-2108"},"PeriodicalIF":3.0,"publicationDate":"2026-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148435530","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

Quantitative genetics of lifetime growth curves in a lizard. 蜥蜴终生生长曲线的数量遗传学。

IF 3 2区环境科学与生态学

Evolution Pub Date : 2026-09-07 DOI: 10.1093/evolut/qpag114

Anaïs Aragon, Alexis Rutschmann, Murielle Richard, Elvire Bestion, Félix Pellerin, Laurane Winandy, Luis-Martin San Jose, Lucie Di Gesu, Élodie Darnet, Jehan Cribellier, Manuel Massot, Jean Clobert, Julien Cote, Pierre de Villemereuil

{"title":"Quantitative genetics of lifetime growth curves in a lizard.","authors":"Anaïs Aragon, Alexis Rutschmann, Murielle Richard, Elvire Bestion, Félix Pellerin, Laurane Winandy, Luis-Martin San Jose, Lucie Di Gesu, Élodie Darnet, Jehan Cribellier, Manuel Massot, Jean Clobert, Julien Cote, Pierre de Villemereuil","doi":"10.1093/evolut/qpag114","DOIUrl":"10.1093/evolut/qpag114","url":null,"abstract":"Body size is an iconic trait in quantitative genetics. For species with indeterminate growth however, growth curve, a function-valued trait, is the actual trait of interest and requires a specialised framework to study its quantitative genetics. Here, we use such a framework in the common lizard (Zootoca vivipara), using two large datasets (wild and mesocosm populations) with pedigrees, decomposing the total heritability in growth dynamics into two components: the heritability of \"intrinsic size\" (being small or large across ages) and the heritability of the shape of growth curve. We found slower growth and larger asymptotic sizes in the wild population. We show very low to moderate heritabilities in the parameters of growth curves, varying across populations and sexes. We show a small to moderate heritability in the growth curves, with a stronger importance of the heritability in the shape of growth curves than on average intrinsic sizes. Genetic variation in growth curves differed between the two populations and sexes. Our results highlight the importance of discussing the full dynamics of growth by showing that there is more adaptive potential in the earlier ages for males and in the later ages for females, with differences between the studied populations.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"1941-1956"},"PeriodicalIF":3.0,"publicationDate":"2026-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148404225","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