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Whole-genome sequencing confirms multiple species of Galapagos giant tortoises. 全基因组测序证实加拉帕戈斯巨龟有多个物种。
IF 3.1 2区 环境科学与生态学
Evolution Pub Date : 2025-02-03 DOI: 10.1093/evolut/qpae164
Stephen J Gaughran, Rachel Gray, Alexander Ochoa, Menna Jones, Nicole Fusco, Joshua M Miller, Nikos Poulakakis, Kevin de Queiroz, Adalgisa Caccone, Evelyn L Jensen
{"title":"Whole-genome sequencing confirms multiple species of Galapagos giant tortoises.","authors":"Stephen J Gaughran, Rachel Gray, Alexander Ochoa, Menna Jones, Nicole Fusco, Joshua M Miller, Nikos Poulakakis, Kevin de Queiroz, Adalgisa Caccone, Evelyn L Jensen","doi":"10.1093/evolut/qpae164","DOIUrl":"10.1093/evolut/qpae164","url":null,"abstract":"<p><p>Galapagos giant tortoises are endemic to the Galapagos Archipelago, where they are found in isolated populations. While these populations are widely considered distinguishable in morphology, behavior, and genetics, the recent divergence of these taxa has made their status as species controversial. Here, we apply multispecies coalescent methods for species delimitation to whole-genome resequencing data from 38 tortoises across all 13 extant taxa to assess support for delimiting these taxa as species. In contrast to previous studies based solely on divergence time, we find strong evidence to reject the hypothesis that all Galapagos giant tortoises belong to a single species. Instead, a conservative interpretation of model-based and divergence-based results indicates that these taxa form a species complex consisting of a minimum of 9 species, with most analyses supporting 13 species. There is mixed support for the species status of taxa living on the same island, with some methods suggesting multiple populations of a single species per island. These results make clear that Galapagos giant tortoise taxa represent different stages in the process of speciation, with some taxa further along in that evolutionary process than others. Our study provides insight into the complex process of speciation on islands, which is urgently needed given the threatened status of island species around the world.</p>","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"296-308"},"PeriodicalIF":3.1,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142644249","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: Stabilizing selection drives sperm length divergence in promiscuous passerines. 摘要:在滥交的雀形目动物中,稳定的选择驱动精子长度分化。
IF 3.1 2区 环境科学与生态学
Evolution Pub Date : 2025-02-03 DOI: 10.1093/evolut/qpae176
Jente Ottenburghs
{"title":"Digest: Stabilizing selection drives sperm length divergence in promiscuous passerines.","authors":"Jente Ottenburghs","doi":"10.1093/evolut/qpae176","DOIUrl":"10.1093/evolut/qpae176","url":null,"abstract":"<p><p>Divergence in gametic traits can play a key role in reproductive isolation. Lifjeld et al. (2025) examined the evolution of sperm length in pairs of songbird populations at various stages along the speciation continuum. Their analyses demonstrated that sperm length diverges more rapidly in species with higher levels of female promiscuity, likely due to stabilizing selection favoring sperm cells that fit within female sperm storage structures. This divergence in sperm length may kickstart speciation in promiscuous songbirds.</p>","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"324-325"},"PeriodicalIF":3.1,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142806264","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
Brain-body coevolution in incipient versus established primate species-evaluating Simpson's "most important distinction". 初生灵长类物种与成熟灵长类物种的脑体共同进化--评估辛普森的 "最重要区别"。
IF 3.1 2区 环境科学与生态学
Evolution Pub Date : 2025-02-03 DOI: 10.1093/evolut/qpae167
Folmer Bokma, Masahito Tsuboi, Nils Chr Stenseth
{"title":"Brain-body coevolution in incipient versus established primate species-evaluating Simpson's \"most important distinction\".","authors":"Folmer Bokma, Masahito Tsuboi, Nils Chr Stenseth","doi":"10.1093/evolut/qpae167","DOIUrl":"10.1093/evolut/qpae167","url":null,"abstract":"<p><p>Are differences between species the long-term consequence of microevolution within species, or does speciation involve fundamentally different processes? We analyzed the brain and body sizes of present-day primate species using a novel phylogenetic comparative method that decomposes the phenotypic covariance of these traits into speciational and anagenetic components. We estimated that approximately half of speciation events are accompanied by accelerated phenotypic change. Equivalent in magnitude to approximately 7 million years of gradual microevolution, such speciational changes in brain and body size account for about 58% of the phenotypic variation among extant species. Interestingly, speciational changes in brain and body size appear significantly less correlated (r ≈ 0.83) than gradual, microevolutionary changes in these same traits (r ≈ 0.97). This indicates that the strong allometric constraint that dictates microevolution in brain and body sizes is relaxed at speciation events. These results suggest that phenotypic evolution is not only accelerated during speciation but also involves events that seldomly occur at microevolutionary timescales.</p>","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"319-323"},"PeriodicalIF":3.1,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142667129","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
Feather Evolution Following Flight Loss In Crown Group Birds: Relaxed Selection And Developmental Constraints.
IF 3.1 2区 环境科学与生态学
Evolution Pub Date : 2025-02-03 DOI: 10.1093/evolut/qpaf020
Evan T Saitta, Lilja Carden, Jonathan S Mitchell, Peter J Makovicky
{"title":"Feather Evolution Following Flight Loss In Crown Group Birds: Relaxed Selection And Developmental Constraints.","authors":"Evan T Saitta, Lilja Carden, Jonathan S Mitchell, Peter J Makovicky","doi":"10.1093/evolut/qpaf020","DOIUrl":"https://doi.org/10.1093/evolut/qpaf020","url":null,"abstract":"<p><p>Feathers are complex structures exhibiting structural/functional disparity across species and plumage. Flight was lost in >30 extant lineages from ~79.58 Ma-15 Ka. Effects of flight loss on senses, neuroanatomy, and skeletomusculature are known. To study how flightlessness affects feathers, we measured 11 feather metrics across the plumage of 30 flightless taxa and their phylogenetically closest volant taxa, with broader sampling of primaries across all orders of crown birds. Our sample includes 27 independent flight losses, representing nearly half of extant flightless species. Feather asymmetry measured by barb angle differences between trailing and leading vanes decreases in flightless lineages, most prominently in flight feathers and weakest in contour feathers. Greatest changes in feather anatomy occur in older flightless lineages (penguins, ratites). Comparative methods show some microscopic feather traits are not dramatically modified after flightlessness compared to body mass increase and relative wing and tail fan reduction, but changes toward greater symmetry are stronger. Relaxing selection for flight does not rapidly modify feather flight adaptations, apart from asymmetry. Feathers of recently flightless lineages resemble their volant relatives. Developmental constraints and relaxed selection for novel feather morphologies may explain some observed changes. Macroscopic changes to flight apparati (skeletomusculature, airfoil size) are more evident in recently flightless taxa and could more reliably detect flightlessness in fossils, with increased feather symmetry as a potential microscopic signal. We observed apical modification in later stages of feather development (asymmetric displacement of barb loci), while morphologies arising during early developmental stages are only altered after millions of years of flightlessness.</p>","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143079083","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
Correction to: Allometric scaling of somatic mutation and epimutation rates in trees. 校正:树木体细胞突变和增殖速率的异速缩放。
IF 3.1 2区 环境科学与生态学
Evolution Pub Date : 2025-02-03 DOI: 10.1093/evolut/qpae173
{"title":"Correction to: Allometric scaling of somatic mutation and epimutation rates in trees.","authors":"","doi":"10.1093/evolut/qpae173","DOIUrl":"10.1093/evolut/qpae173","url":null,"abstract":"","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"328"},"PeriodicalIF":3.1,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142817581","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
Weak integration allows novel fin shapes and spurs locomotor diversity in reef fishes. 弱整合允许珊瑚礁鱼类形成新颖的鳍形,并刺激其运动多样性。
IF 3.1 2区 环境科学与生态学
Evolution Pub Date : 2025-02-03 DOI: 10.1093/evolut/qpae165
Darien R Satterfield, Bernice Yin, Sky Jung, Samantha Hodges-Lisk, Dylan K Wainwright, Michael D Burns, Peter C Wainwright
{"title":"Weak integration allows novel fin shapes and spurs locomotor diversity in reef fishes.","authors":"Darien R Satterfield, Bernice Yin, Sky Jung, Samantha Hodges-Lisk, Dylan K Wainwright, Michael D Burns, Peter C Wainwright","doi":"10.1093/evolut/qpae165","DOIUrl":"10.1093/evolut/qpae165","url":null,"abstract":"<p><p>In functional systems composed of many traits, selection for specialized function can induce trait evolution by acting directly on individual components within the system, or indirectly through networks of trait integration. However, strong integration can also hinder diversification into regions of trait space that are not aligned with axes of covariation among traits. Thus, non-independence among traits may limit functional expansion. We explore this dynamic in the evolution of fin shapes in 106 species from 38 families of coral reef fishes, a polyphyletic assemblage that shows exceptional diversity in locomotor function. Despite expectations of a strong match between form and function, we find subtantial fin shape disparity across species that share a swimming mode. The evolution of fin shape is weakly integrated across the four functionally dominant fins in swimming and integration is weakened as derived swimming modes evolve. The weak integration among fins in the ancestral locomotor condition provides a primary axis of diversification while allowing for off-axis diversification via independent trait responses to selection. However, the evolution of novel locomotor modes coincides with a loss of integration among fins. Our study highlights the need for additional work on the functional consequences of fin shape in fishes.</p>","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"261-279"},"PeriodicalIF":3.1,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142667148","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 reproductive leaf dimorphism in two globally distributed fern families is neither stepwise nor irreversible, unless further specialization evolves. 在两个全球分布的蕨类植物科中,生殖叶二形性的进化既不是逐步的,也不是不可逆转的,除非出现进一步的特化。
IF 3.1 2区 环境科学与生态学
Evolution Pub Date : 2025-02-03 DOI: 10.1093/evolut/qpae159
Jacob S Suissa, Makaleh Smith
{"title":"The evolution of reproductive leaf dimorphism in two globally distributed fern families is neither stepwise nor irreversible, unless further specialization evolves.","authors":"Jacob S Suissa, Makaleh Smith","doi":"10.1093/evolut/qpae159","DOIUrl":"10.1093/evolut/qpae159","url":null,"abstract":"<p><p>A contemporary interpretation of Dollo's Law states that the evolution of a specialized structure is irreversible. Among land plants, reproductive specialization shows a trend toward increasing complexity without reversion, raising questions about evolutionary steps and the irreversibility of reproductive complexity. Ferns exhibit varied reproductive strategies; some are dimorphic (producing separate leaves for photosynthesis and reproduction), while others are monomorphic (where one leaf is used for both photosynthesis and spore dispersal). This diversity provides an opportunity to examine the applicability of Dollo's Law in the evolution of reproductive leaf specialization. We analyzed 118 species in Blechnaceae and Onocleaceae, applying quantitative morphometrics and phylogenetic comparative methods to test the pillars of a modernized interpretation of Dollo's Law. The evolution of dimorphism in Blechnaceae is neither stepwise nor irreversible, with direct transitions from monomorphism to dimorphism, including several reversions. In contrast, Onocleaceae exhibits an irreversibility to monomorphism only upon further specialization of fertile leaves for humidity-driven spore dispersal; this suggests that additional specialization, not dimorphism alone, may facilitate irreversibility. These results provide insight into the canalization of fertile-sterile leaf dimorphism in seed plants, where the addition of traits like heterospory and integuments lead to further specialization and potential irreversibility. These findings suggest that as new specialized traits evolve alongside preexisting ones, reversion may become increasingly unlikely.</p>","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"164-175"},"PeriodicalIF":3.1,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142564173","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
Costly traits in a dynamic world: trait responses to fine-scale varying environment differ according to selection pressures in a tropical lizard.
IF 3.1 2区 环境科学与生态学
Evolution Pub Date : 2025-01-30 DOI: 10.1093/evolut/qpaf018
Gokul Valiya Parambil, Kavita Isvaran
{"title":"Costly traits in a dynamic world: trait responses to fine-scale varying environment differ according to selection pressures in a tropical lizard.","authors":"Gokul Valiya Parambil, Kavita Isvaran","doi":"10.1093/evolut/qpaf018","DOIUrl":"https://doi.org/10.1093/evolut/qpaf018","url":null,"abstract":"<p><p>Under current climate change patterns, rapidly changing environments can impose strong selection on traits. Costly traits that require heavy investment and strongly affect fitness may be particularly vulnerable to such changes. Despite organisms experiencing dynamic environments, our knowledge of costly trait response is limited as longitudinal studies across generations are rare. Using a long-term 11-generation dataset, we examined how fine-scale spatial and temporal variation in ecological and demographic conditions modify costly traits, specifically positive allometry in morphological traits under different selection pressures, in Psammophilus dorsalis, a short-lived socially polygynous lizard. We comprehensively measured males and females across non-overlapping generations and space and quantified fine-scale variation in key ecological and demographic parameters. Positive allometry in male head width (under sexual selection) varied dramatically over generations and space. Limited rainfall, harsh temperatures, and greater competition promoted positive allometry in male head width. In stark contrast, positive allometry in female interlimb length (under fecundity selection) only weakly correlated with environmental conditions. We demonstrate that costly traits are sensitive to changing environments depending on the underlying selection pressure, with sexually selected traits showing larger effects in tropical lizards. Future climatic predictions, indicating accelerated warming and altered rainfall, can strongly impact phenotypes in tropical lizards.</p>","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143064835","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
Comparative functional analyses of the prostate-specific KLK3 enzyme in primates reveals the impact of sexual selection.
IF 3.1 2区 环境科学与生态学
Evolution Pub Date : 2025-01-29 DOI: 10.1093/evolut/qpaf012
Emine F Kahveci, Amanda M Colvin Zielen, William J Gibbs, Clancy A McIntyre, Raahi Modi, Hannah Z Johnstonbaugh, Thomas H Washington Iv, David R Brown V, Megan R Hockman, Neil R Rossman, Michael I Jensen-Seaman
{"title":"Comparative functional analyses of the prostate-specific KLK3 enzyme in primates reveals the impact of sexual selection.","authors":"Emine F Kahveci, Amanda M Colvin Zielen, William J Gibbs, Clancy A McIntyre, Raahi Modi, Hannah Z Johnstonbaugh, Thomas H Washington Iv, David R Brown V, Megan R Hockman, Neil R Rossman, Michael I Jensen-Seaman","doi":"10.1093/evolut/qpaf012","DOIUrl":"https://doi.org/10.1093/evolut/qpaf012","url":null,"abstract":"<p><p>Male reproductive proteins frequently evolve rapidly in animals, potentially due to adaptive evolution driven by sperm competition, polyspermy avoidance, or pathogen defense. Alternatively, elevated rates of protein change may be due to relaxed constraint. The prostate-specific protease KLK3 has experienced dynamic evolution since its origin stemming from a gene duplication in the ancestor of all Old World primates, with instances of rapid evolution, stasis, and pseudogenization. As we demonstrate with functional assays using recombinant proteins, these changes have resulted in a chimpanzee KLK3 ortholog with greater enzyme velocity and higher efficiency than other apes, including humans. Reduced enzyme efficiency was observed in gorillas and gibbons who both possess a chimeric KLK2/KLK3 enzyme resulting from independent genomic deletions. The relative efficiency of KLK3 homologs among these species correlates well with their presumed levels of sperm competition. Furthermore, the reconstructed protein of the human-chimpanzee last common ancestor has enzyme kinetics identical to modern humans, suggesting that the observed functional differences between humans and chimpanzees are derived in the latter, and allowing us to tentatively speculate that their common ancestor did not possess a polygynandrous mating system similar to modern chimpanzees.</p>","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143058635","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
Craniofacial modularity and the evolution of cranial kinesis in the adaptive radiation of Furnariidae (Aves: Passeriformes).
IF 3.1 2区 环境科学与生态学
Evolution Pub Date : 2025-01-29 DOI: 10.1093/evolut/qpaf013
Manuel I Stefanini, Pablo S Milla Carmona, Valentina Gómez-Bahamón, Nicolás Mongiardino Koch, Ignacio M Soto, Raúl O Gómez, Kristof Zyskowski, Claudia P Tambussi
{"title":"Craniofacial modularity and the evolution of cranial kinesis in the adaptive radiation of Furnariidae (Aves: Passeriformes).","authors":"Manuel I Stefanini, Pablo S Milla Carmona, Valentina Gómez-Bahamón, Nicolás Mongiardino Koch, Ignacio M Soto, Raúl O Gómez, Kristof Zyskowski, Claudia P Tambussi","doi":"10.1093/evolut/qpaf013","DOIUrl":"https://doi.org/10.1093/evolut/qpaf013","url":null,"abstract":"<p><p>The role of phenotypic modularity in the evolution of skull morphology in birds has been a subject of debate in recent years. Furnariids (ovenbirds and woodcreepers), a spectacular avian adaptive radiation, are distinguished in their cranial morphology as the only passerines with two types of cranial kinesis, constituting a great model to test whether the evolution of novelties linked to kinesis was associated with shifts in patterns of evolutionary modularity and allometry in the avian skull. Our analyses by means of geometric morphometric tools and phylogenetic comparative methods show that the beak and neurocranium of furnariids evolved in a modular fashion and shaped by the cranial kinesis evolution. Besides, species with prokinesis show a higher degree of modularity and morphological disparity, lower phenotypic rates, as well as higher contribution of allometry in the evolution of the beak morphology than species with proximal rhynchokinesis, suggesting, as observed in several vertebrates, that the functional demands associated with higher degrees of cranial kinesis promoted rapid integration throughout the skull. Prokinetic - robust morphotypes and proximal rhynchokinetic - gracile morphotypes, have repeatedly evolved by evolutionary convergence in both modules, which suggests the existence of functional trade-offs and long-standing adaptive optima related to cranial kinesis.</p>","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143058636","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
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