EvolutionPub Date : 2025-06-26DOI: 10.1093/evolut/qpaf128
{"title":"Correction to: Island biogeography and competition drive rapid venom complexity evolution across rattlesnakes.","authors":"","doi":"10.1093/evolut/qpaf128","DOIUrl":"https://doi.org/10.1093/evolut/qpaf128","url":null,"abstract":"","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144495406","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}
EvolutionPub Date : 2025-06-25DOI: 10.1093/evolut/qpaf133
Genevieve Tostevin
{"title":"Digest: Complex influences on an adaptive trait in birds.","authors":"Genevieve Tostevin","doi":"10.1093/evolut/qpaf133","DOIUrl":"https://doi.org/10.1093/evolut/qpaf133","url":null,"abstract":"<p><p>Ausprey et al. (2025) investigated the relationship between vision, an adaptive trait in birds, and nest construction. Eye size was correlated with nest architecture and habitat, suggesting that species that construct open nests in dark habitats gain an advantage from a better ability to see their surroundings. This study highlights the importance of untangling the factors that influence adaptive traits.</p>","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144483685","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}
EvolutionPub Date : 2025-06-25DOI: 10.1093/evolut/qpaf124
Arthur Zwaenepoel
{"title":"Autopolyploid establishment through polygenic adaptation.","authors":"Arthur Zwaenepoel","doi":"10.1093/evolut/qpaf124","DOIUrl":"https://doi.org/10.1093/evolut/qpaf124","url":null,"abstract":"<p><p>We define the infinitesimal model of quantitative genetics for the inheritance of an additive quantitative trait in a mixed-ploidy population consisting of diploid, triploid and autotetraploid individuals producing haploid and diploid gametes. We implement efficient simulation methods and use these to study the quantitative genetics of mixed-ploidy populations and the establishment of autotetraploids in a new habitat. We show that, when migration from the source population is rare, autotetraploids are more likely to establish in the new habitat than diploids under a very broad range of conditions, but that this is unlikely to sufficiently counter the scarcity of tetraploid founders when the source is predominantly diploid. We assess in more detail how minority cytotype exclusion interacts with migration load in the establishment process and evaluate the impact of additional sources of prezygotic isolation, specifically selfing and assortative mating, on the relative establishment probabilities of the different cytotypes in the presence of maladaptive migration. In the discussion we consider how inbreeding depression may impact our findings.</p>","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144483684","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}
EvolutionPub Date : 2025-06-23DOI: 10.1093/evolut/qpaf135
Sarah Khalil, Jennifer Walsh, Erik D Enbody, Daniel T Baldassarre, Michael S Webster, Jordan Karubian
{"title":"Adaptive introgression of putative carotenoid pigment genes explains geographic variation in a sexually-selected plumage trait.","authors":"Sarah Khalil, Jennifer Walsh, Erik D Enbody, Daniel T Baldassarre, Michael S Webster, Jordan Karubian","doi":"10.1093/evolut/qpaf135","DOIUrl":"https://doi.org/10.1093/evolut/qpaf135","url":null,"abstract":"<p><p>Understanding the genetic architecture of sexually-selected traits is a fundamental goal in evolutionary biology because it can explain the constraints and processes that shape the production of these traits and emergent evolutionary processes, such as introgression. To address these topics, we leverage populations of hybridizing red-backed fairywrens (Malurus melanocephalus) that differ by plumage color (orange vs red) across a well-classified hybrid zone with a priori evidence of strong female preference for males with redder plumage. We sequenced whole genomes of 36 individuals that vary in plumage hue and found that divergence between even the most phenotypically different individuals was very low, yet we identified several regions with high Fst estimates relative to the background divergence. To determine whether loci in these elevated regions were linked to plumage variation across the species' range, we sequenced top candidate genetic variants for color differentiation in 285 individuals from 16 populations and traced their frequencies across the range of the species. We found that 15% of these variants were concordant with the plumage cline, with some linked to putative carotenoid processing genes and exhibiting evidence of selection. Considered together, these findings suggest that geographic variation in the sexually-selected plumage color of male red-backed fairywrens is in part explained by adaptive introgression of genes involved in carotenoid coloration. This study highlights how genetic mechanisms underlying color variation can shape patterns of adaptive introgression via sexual selection and phenotypic differentiation in hybridizing taxa.</p>","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144527064","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}
EvolutionPub Date : 2025-06-18DOI: 10.1093/evolut/qpaf106
Claire Godineau, Ophólie Ronce, Cóline Devaux
{"title":"Complex effects of assortative mating on adaptation to environmental change in the presence of sex-specific selection.","authors":"Claire Godineau, Ophólie Ronce, Cóline Devaux","doi":"10.1093/evolut/qpaf106","DOIUrl":"https://doi.org/10.1093/evolut/qpaf106","url":null,"abstract":"<p><p>Previous theory suggests that fast adaptation of body size and phenology to climate warming could be facilitated by assortative mating. We here test whether this still holds when natural selection is sex-specific and assortative mating is driven by different mechanisms. We model a trait with identical distribution for females and males, but different optima across sexes and time. Predictions derived from the infinitesimal model of inheritance are confirmed by individual-based simulations. We find that female maladaptation depends on a sexual-conflict mismatch in a constant environment, and an adaptive lag generated by the environmental change. By strengthening the effect of natural selection on females, assortative mating reduces the sexual-conflict mismatch compared to random mating. However, it can either increase or decrease the adaptive lag, depending on the relative strength of natural selection on females versus males. Conditions under which assortative mating is beneficial depend on whether the environmental change and the sexual conflict displace the mean phenotype in the same direction, the strength of the sexual conflict and the assortment, and the mechanism that drives assortative mating. Associated with sex-specific selection, assortative mating does not always facilitate adaptation to environmental change, and its effects depend on how it is modeled.</p>","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144511667","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}
EvolutionPub Date : 2025-06-18DOI: 10.1093/evolut/qpaf136
Bruna O Cassettari, Monique N Simon, Bruno C Genevcius, Glauco Machado
{"title":"Can sexual selection promote within-species divergence of male genitalia? A study case with a male-dimorphic arachnid.","authors":"Bruna O Cassettari, Monique N Simon, Bruno C Genevcius, Glauco Machado","doi":"10.1093/evolut/qpaf136","DOIUrl":"https://doi.org/10.1093/evolut/qpaf136","url":null,"abstract":"<p><p>Sexual selection can drive divergence in male genital morphology between species, but its role in within-species divergence remains underexplored. Male-dimorphic species offer an opportunity to investigate this, as different morphs often employ distinct reproductive tactics and face different challenges in sperm competition and female stimulation during copulation. We tested the hypothesis that sexual selection promotes within-species genital divergence using the harvestman Poecilaemula lavarrei as a model. This arachnid has two male morphs: larger, territory-holding majors, and smaller, sneaker minors. We first described copulatory interactions, finding no differences in female acceptance or copulation duration between morphs. Morphological comparisons showed that major males have longer pars basalis and ventral plate area, although no differences in ventral plate width, shape, or relative area of the mat of microsetae were detected. Allometric analyses revealed similar hypoallometric patterns for pars basalis length and ventral plate width in both morphs. However, ventral plate length was isometric in minors and hypoallometric in majors, which is the first report of allometric differences in genital traits between male morphs of a species. Our results suggest that despite differing reproductive tactics, the form and intensity of sexual selection on genital morphology is similar between morphs, potentially constrained by stabilizing selection.</p>","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144511666","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}
EvolutionPub Date : 2025-06-17DOI: 10.1093/evolut/qpaf134
Jessica H Arbour
{"title":"Hitting rock bottom: exaptation, ecological filtering and the benthopelagic divergence of Percid fishes.","authors":"Jessica H Arbour","doi":"10.1093/evolut/qpaf134","DOIUrl":"https://doi.org/10.1093/evolut/qpaf134","url":null,"abstract":"<p><p>Ecological filtering and exaptation are related concepts in which prior traits and adaptations facilitate transitions to new habitats or niches, sometimes by being co-opted for a new function. I investigated possible ecological filtering/exaptation in Percidae, a family of freshwater fishes that shows its highest species richness in small benthic fishes living in creeks and small streams. I hypothesize that traits associated with transitions to benthic living subsequently facilitated the colonization of small river habitats. Using phylogenetic comparative approaches, I found that transitions in river size were dependent on presence or absence of a gas bladder, and long-term residency in small rivers in particular was associated with transitions to benthic living. Based on body size and 3D whole body shape datasets, I found that selection towards smaller bodies and longer caudal peduncles in benthic species in large rivers appears to have enabled transitions to small rivers, while also slowing rates of shape and size evolution; this may explain the high proportion of small, benthic darters. Contrasting selective pressures from habitat exaptation and trophic adaptations in small rivers may constrain ecomorphological diversification. Overall, ecological filtering and/or exaptation may impact both the biodiversity and phylogenetic composition of fish assemblages in small streams.</p>","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144505198","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}
EvolutionPub Date : 2025-06-14DOI: 10.1093/evolut/qpaf041
Savannah L Olroyd, Bjørn T Kopperud
{"title":"Allometry of sound reception structures and evidence for a mandibular middle ear in non-mammalian synapsids.","authors":"Savannah L Olroyd, Bjørn T Kopperud","doi":"10.1093/evolut/qpaf041","DOIUrl":"10.1093/evolut/qpaf041","url":null,"abstract":"<p><p>The origin of sensory structures provides an excellent framework for studying how constraints and selective pressures affect the evolution of complex features. The evolution of the mammalian middle ear from the jaw hinge of non-mammalian synapsids offers a deep-time perspective on sensory evolution but is limited by a poor understanding of early synapsid hearing. This work tests the hypothesis that the size of the reflected lamina of the angular bone in non-mammalian synapsids followed a strict, negative allometric trend that may be expected for a sound receiver. Allometry is first investigated in the pterygoid bone of chameleons, which was co-opted for hearing in some species and represents a possible analog for the synapsid reflected lamina. Results indicate that chameleons with a pterygoid ear exhibit a similar allometric slope, while species without a pterygoid ear have variable slopes, suggesting an optimum allometric pattern in sound receivers. In the reflected lamina, we find reduced variation around the allometric trend in therocephalians and non-bidentalian anomodonts, and evolutionary modeling suggests constraint in these groups. These results are consistent with a mandibular middle ear in non-mammalian synapsids, adding valuable new insights to the hypothesis that selective pressures for hearing ability were present long before the evolution of the mammalian middle ear.</p>","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"905-921"},"PeriodicalIF":3.1,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143482553","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}
EvolutionPub Date : 2025-06-14DOI: 10.1093/evolut/qpaf044
Agathe Puissant, Violaine Llaurens
{"title":"Ultraviolet in swallowtail butterflies: contrasted dorso-ventral evolution highlights a trade-off between natural and sexual selection on visual cues.","authors":"Agathe Puissant, Violaine Llaurens","doi":"10.1093/evolut/qpaf044","DOIUrl":"10.1093/evolut/qpaf044","url":null,"abstract":"<p><p>The evolutionary dynamics of color pattern diversification in animals is strongly influenced by visual interactions within and among species. While much attention has been given to color pattern variation in the human-visible range, perception outside this range is observed in a wide array of species and is poised to influence color pattern evolution. Butterfly species often show sensitivity to ultraviolet (UV) light, impacting wing color pattern diversification as their evolution is influenced by both predator vision and sexual selection. Here, we explore UV color pattern diversification in Papilionidae within a comparative phylogenetic framework by quantifying variation from UV photographs of museum specimens using a machine-learning-based method. We find decoupled dorsal and ventral UV color pattern evolution, with brighter and more rapidly evolving ventral sides, especially in males. Conversely, we find a smaller dorso-ventral difference in visible-light color patterns. Moreover, we find divergence in male ventral UV patterns in closely related sympatric species, even after accounting for variation due to visible-light patterns. These results suggest an influence of sexual selection on UV ventral pattern diversification. These findings highlight how the trade-off between sexual and natural selection may lead to contrasted evolution of ventral vs. dorsal sides of the same organ.</p>","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"995-1006"},"PeriodicalIF":3.1,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143572046","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}
EvolutionPub Date : 2025-06-14DOI: 10.1093/evolut/qpaf025
Richard Servajean, Arthur Alexandre, Anne-Florence Bitbol
{"title":"Impact of complex spatial population structure on early and long-term adaptation in rugged fitness landscapes.","authors":"Richard Servajean, Arthur Alexandre, Anne-Florence Bitbol","doi":"10.1093/evolut/qpaf025","DOIUrl":"10.1093/evolut/qpaf025","url":null,"abstract":"<p><p>We study how rugged fitness landscapes are explored by spatially structured populations with demes on the nodes of a graph, connected by migrations. In the weak mutation and rare migration regime, we find that, in most landscapes, migration asymmetries associated with some suppression of natural selection allow the population to reach higher fitness peaks first. In this sense, suppression of selection can make early adaptation more efficient. However, the time it takes to reach the first fitness peak is then increased. We also find that suppression of selection tends to enhance finite-size effects. Finite structures can adapt more efficiently than very large ones, especially in high-dimensional fitness landscapes. We extend our study to frequent migrations, suggesting that our conclusions hold in this regime. We then investigate the impact of spatial structure with rare migrations on long-term evolution by studying the steady state of the population with weak mutation, and introducing an associated steady-state effective population size. We find that suppression of selection is associated to small steady-state effective population sizes and thus to small average steady-state fitnesses.</p>","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"935-950"},"PeriodicalIF":3.1,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143556392","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}