Evolution最新文献_第7页

Selective advantage of redirected helping in a viscous population. 粘性群体中重定向帮助的选择优势。

IF 3.1 2区环境科学与生态学

Evolution Pub Date : 2024-12-10 DOI: 10.1093/evolut/qpae175

Alan Flatrès, Geoff Wild

{"title":"Selective advantage of redirected helping in a viscous population.","authors":"Alan Flatrès, Geoff Wild","doi":"10.1093/evolut/qpae175","DOIUrl":"https://doi.org/10.1093/evolut/qpae175","url":null,"abstract":"When a brood fails, the failed parent can help a neighbor rear its offspring. This behavior is known as redirected helping and occurs in various species. The advantage of redirected helping may seem obvious, provided the individual whose brood fails helps a related neighbor: the helper at least gains indirect fitness by redirecting its parental effort. However, complications arise when considering a viscous population, where individuals remain on or close to their natal site. In such a population, individuals compete with relatives, which dilutes the advantage of helping and may counteract it altogether. This raises a question: when can we expect redirected helping to evolve in a viscous population? We address this question with inclusive fitness models. We find that redirected helping can always be favored in a viscous population, provided the cost is sufficiently low. We also identify life-history features - like survival, dispersal, and brood-failure rate - that promote redirected helping. The effect of these life-history features, in general, depends on which component of fitness (survival or fecundity) benefits from help and how brood failure varies among demes. Unlike previous authors, we find that helping can be more strongly promoted when it provides survival rather than fecundity benefits.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142806412","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

Contact zones reveal restricted introgression despite frequent hybridization across a recent lizard radiation. 接触区显示了有限的基因渗入，尽管在最近的蜥蜴辐射中频繁杂交。

IF 3.1 2区环境科学与生态学

Evolution Pub Date : 2024-12-06 DOI: 10.1093/evolut/qpae174

Stephen M Zozaya, Scott A Macor, Rhiannon Schembri, Megan Higgie, Conrad J Hoskin, Kate O'Hara, Ching Ching Lau, Wesley J Read, Craig Moritz

{"title":"Contact zones reveal restricted introgression despite frequent hybridization across a recent lizard radiation.","authors":"Stephen M Zozaya, Scott A Macor, Rhiannon Schembri, Megan Higgie, Conrad J Hoskin, Kate O'Hara, Ching Ching Lau, Wesley J Read, Craig Moritz","doi":"10.1093/evolut/qpae174","DOIUrl":"https://doi.org/10.1093/evolut/qpae174","url":null,"abstract":"Introgression - the exchange of genetic material through hybridization - is now recognized as common among animal species. The extent of introgression, however, can vary considerably even when it occurs: for example, introgression can be geographically restricted or so pervasive that populations merge. Such variation highlights the importance of understanding the factors mediating introgression. Here we used genome-wide SNP data to assess hybridization and introgression at 32 contact zones, comprising 21 phylogenetic independent contrasts across a recent lizard radiation (Heteronotia). We then tested the relationship between the extent of introgression (average admixture at contact zones) and genomic divergence across independent contrasts. Early generation hybrids were detected at contact zones spanning the range of genomic divergence included here. Despite this, we found that introgression is remarkably rare and, when observed, geographically restricted. Only the two most genomically similar population pairs showed introgression beyond 5 km of the contact zone. Introgression dropped precipitously at only modest levels of genomic divergence, beyond which it was absent or extremely low. Our results contrast with the growing number of studies indicating that introgression is prevalent among animals, suggesting that animal groups will vary considerably in their propensity for introgression.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142827748","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: Making sense of recent models of the "sheltering" hypothesis for recombination arrest between sex chromosomes. 更正：理解性染色体间重组抑制的 "庇护 "假说的最新模型。

IF 3.1 2区环境科学与生态学

Evolution Pub Date : 2024-12-02 DOI: 10.1093/evolut/qpae153

引用次数: 0

Evolutionary potential and constraints in an aposematic species: Genetic correlations between warning coloration and fitness components in wood tiger moths. 一种预警物种的进化潜力和制约因素：木虎蛾警戒色与适应性成分之间的遗传相关性。

IF 3.1 2区环境科学与生态学

Evolution Pub Date : 2024-12-02 DOI: 10.1093/evolut/qpae172

Eva L Koch, Melanie N Brien, Juan A Galarza, Chris D Jiggins, Johanna Mappes

{"title":"Evolutionary potential and constraints in an aposematic species: Genetic correlations between warning coloration and fitness components in wood tiger moths.","authors":"Eva L Koch, Melanie N Brien, Juan A Galarza, Chris D Jiggins, Johanna Mappes","doi":"10.1093/evolut/qpae172","DOIUrl":"https://doi.org/10.1093/evolut/qpae172","url":null,"abstract":"Variability in warning signals is common but remains puzzling since deviations from the most common form should result in a higher number of predator attacks. One explanation may lie in constraints due to genetic correlations between warning colour and other traits under selection. To explore the relationship between variation in warning colour and different life-history traits, we used an extensive data set comprising 64,741 individuals from a Finnish and an Estonian population of the wood tiger moths, Arctia plantaginis, that have been maintained in captivity over 25 generations. This species exhibits variable warning coloration in larval and adult stages. Measuring these traits alongside several fitness components allowed us to set colour variation into context and obtain a better understanding of selection and constraints. Complete pedigree information enabled us to estimate genetic variances and covariances, which revealed several complex interplays between fitness components: Selection for faster development led to a significantly reduced fecundity. Fecundity was also constrained by negative correlations between direct genetic and maternal effects. However, we found no evidence that genetic associations with life-history traits constrain efficiency of warning colours.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142823932","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

Mismatch between pollen and pistil size causes asymmetric mechanical reproductive isolation across Phlox species. 花粉和雌蕊大小的不匹配会导致凤仙花物种间不对称的机械生殖隔离。

IF 3.1 2区环境科学与生态学

Evolution Pub Date : 2024-12-02 DOI: 10.1093/evolut/qpae128

Anna F Feller, Grace Burgin, Nia F Lewis, Rohan Prabhu, Robin Hopkins

{"title":"Mismatch between pollen and pistil size causes asymmetric mechanical reproductive isolation across Phlox species.","authors":"Anna F Feller, Grace Burgin, Nia F Lewis, Rohan Prabhu, Robin Hopkins","doi":"10.1093/evolut/qpae128","DOIUrl":"10.1093/evolut/qpae128","url":null,"abstract":"Characterizing the mechanisms of reproductive isolation between lineages is key to determining how new species are formed and maintained. In flowering plants, interactions between the reproductive organs of the flower-the pollen and the pistil-serve as the last barrier to reproduction before fertilization. As such, these pollen-pistil interactions are both complex and important for determining a suitable mate. Here, we test whether differences in style length (a part of the pistil) generate a postmating prezygotic mechanical barrier between five species of perennial Phlox wildflowers with geographically overlapping distributions. We perform controlled pairwise reciprocal crosses between three species with long styles and two species with short styles to assess crossing success (seed set). We find that the heterospecific seed set is broadly reduced compared to conspecific cross success and reveal a striking asymmetry in heterospecific crosses between species with different style lengths. To determine the mechanism underlying this asymmetric reproductive isolating barrier, we assess pollen tube growth in vivo and in vitro. We demonstrate that pollen tubes of short-styled species do not grow long enough to reach the ovaries of long-styled species. We find that short-styled species also have smaller pollen and that both within- and between-species pollen diameter is highly correlated with pollen tube length. Our results support the hypothesis that the small pollen of short-styled species lacks resources to grow pollen tubes long enough to access the ovaries of the long-styled species, resulting in an asymmetrical, mechanical barrier to reproduction. Such reproductive isolating mechanisms, combined with additional pollen-pistil incompatibilities, may be particularly important for closely related species in geographic proximity that share pollinators.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"1936-1948"},"PeriodicalIF":3.1,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142282506","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

Distinct patterns of genetic variation at low-recombining genomic regions represent haplotype structure. 低重组基因组区域不同的遗传变异模式代表了单体型结构。

IF 3.1 2区环境科学与生态学

Evolution Pub Date : 2024-12-02 DOI: 10.1093/evolut/qpae117

Jun Ishigohoka, Karen Bascón-Cardozo, Andrea Bours, Janina Fuß, Arang Rhie, Jacquelyn Mountcastle, Bettina Haase, William Chow, Joanna Collins, Kerstin Howe, Marcela Uliano-Silva, Olivier Fedrigo, Erich D Jarvis, Javier Pérez-Tris, Juan Carlos Illera, Miriam Liedvogel

{"title":"Distinct patterns of genetic variation at low-recombining genomic regions represent haplotype structure.","authors":"Jun Ishigohoka, Karen Bascón-Cardozo, Andrea Bours, Janina Fuß, Arang Rhie, Jacquelyn Mountcastle, Bettina Haase, William Chow, Joanna Collins, Kerstin Howe, Marcela Uliano-Silva, Olivier Fedrigo, Erich D Jarvis, Javier Pérez-Tris, Juan Carlos Illera, Miriam Liedvogel","doi":"10.1093/evolut/qpae117","DOIUrl":"10.1093/evolut/qpae117","url":null,"abstract":"Genomic regions sometimes show patterns of genetic variation distinct from the genome-wide population structure. Such deviations have often been interpreted to represent effects of selection. However, systematic investigation of whether and how non-selective factors, such as recombination rates, can affect distinct patterns has been limited. Here, we associate distinct patterns of genetic variation with reduced recombination rates in a songbird, the Eurasian blackcap (Sylvia atricapilla), using a new reference genome assembly, whole-genome resequencing data and recombination maps. We find that distinct patterns of genetic variation reflect haplotype structure at genomic regions with different prevalence of reduced recombination rate across populations. At low-recombining regions shared in most populations, distinct patterns reflect conspicuous haplotypes segregating in multiple populations. At low-recombining regions found only in a few populations, distinct patterns represent variance among cryptic haplotypes within the low-recombining populations. With simulations, we confirm that these distinct patterns evolve neutrally by reduced recombination rate, on which the effects of selection can be overlaid. Our results highlight that distinct patterns of genetic variation can emerge through evolutionary reduction of local recombination rate. The recombination landscape as an evolvable trait therefore plays an important role determining the heterogeneous distribution of genetic variation along the genome.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"1916-1935"},"PeriodicalIF":3.1,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142105774","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

Social mating systems in birds: resource-defense polygamy-but not lekking-is a macroevolutionarily unstable trait. 鸟类的社会交配系统：资源防御型一夫多妻制是一种宏观进化上不稳定的性状，但并不是卵生。

IF 3.1 2区环境科学与生态学

Evolution Pub Date : 2024-12-02 DOI: 10.1093/evolut/qpae123

Rafael S Marcondes, Nicolette Douvas

{"title":"Social mating systems in birds: resource-defense polygamy-but not lekking-is a macroevolutionarily unstable trait.","authors":"Rafael S Marcondes, Nicolette Douvas","doi":"10.1093/evolut/qpae123","DOIUrl":"10.1093/evolut/qpae123","url":null,"abstract":"Our understanding of the evolution of social mating systems is largely based on an atemporal ecological framework, whereas macroevolutionary and phylogenetic perspectives looking at the causes of mating systems variation are less developed. Here, we present analyses of the evolution of social mating systems in birds at an unprecedented scale, including 66% of the world's birds and using trait-dependent speciation and extinction models. We found that lekking (no social bond between the sexes) is very rarely lost, in accordance with the hypothesis that a male shifting to investing in one rather than multiple mates would suffer a severe fitness cost. In contrast, resource-defense polygamous lineages (with a weak, transient socio-sexual bond) frequently revert back to monogamy (strong, durable socio-sexual bond) and have an elevated extinction fraction. We tentatively attribute this to the impossibility of females settling on an optimal parental care strategy under this system. Finally, we found that most gains of lekking have been directly from monogamy rather than through an intermediate stage of resource-defense polygamy.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"1980-1990"},"PeriodicalIF":3.1,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142139716","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

Sexually antagonistic coevolution can explain female display signals and male sensory adaptations. 性别对抗性共同进化可以解释雌性显示信号和雄性感官适应性。

IF 3.1 2区环境科学与生态学

Evolution Pub Date : 2024-12-02 DOI: 10.1093/evolut/qpae133

R Axel W Wiberg, Rosalind L Murray, Elizabeth Herridge, Varpu Pärssinen, Darryl T Gwynne, Luc F Bussière

{"title":"Sexually antagonistic coevolution can explain female display signals and male sensory adaptations.","authors":"R Axel W Wiberg, Rosalind L Murray, Elizabeth Herridge, Varpu Pärssinen, Darryl T Gwynne, Luc F Bussière","doi":"10.1093/evolut/qpae133","DOIUrl":"10.1093/evolut/qpae133","url":null,"abstract":"The prevalence and diversity of female ornaments pose a challenge to evolutionary theory because males should prefer mates that spend resources on offspring rather than on ornaments. Among dance flies, there is extraordinary variation in sexual dimorphism. Females of many species have conspicuous ornaments (leg scales and inflatable abdominal sacs). Meanwhile, males of some species have exaggerated regions of their eyes with larger ommatidial facets that allow for regionally elevated photosensitivity and/or acuity. Here, we conduct a comparative study of these traits using both species descriptions available from the literature, as well as quantitative measures of eyes and ornaments from wild-caught flies. We show a conspicuous covariance across species between exaggerated male dorsal eye regions and the extent of female ornaments: species with highly ornamented females have males with more exaggerated eyes. We discuss this pattern in the context of competing hypotheses for the evolution of these traits and propose a plausible role for sexually antagonistic coevolution.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"2006-2016"},"PeriodicalIF":3.1,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142344231","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: Plasticity cannot fully compensate evolutionary differences in heat tolerance across fish species. 更正：可塑性不能完全弥补不同鱼类耐热性的进化差异。

IF 3.1 2区环境科学与生态学

Evolution Pub Date : 2024-12-02 DOI: 10.1093/evolut/qpae152

引用次数: 0

Teosinte populations exhibit weak local adaptation to their rhizosphere biota despite strong effects of biota source on teosinte fitness and traits. 尽管生物群来源对茶树的适应性和性状有很大影响，但茶树种群对根瘤菌生物群的局部适应性很弱。

IF 3.1 2区环境科学与生态学

Evolution Pub Date : 2024-12-02 DOI: 10.1093/evolut/qpae130

Anna M O'Brien, Ruairidh J H Sawers, Jaime Gasca-Pineda, Ivan Baxter, Luis E Eguiarte, Jeffrey Ross-Ibarra, Sharon Y Strauss

{"title":"Teosinte populations exhibit weak local adaptation to their rhizosphere biota despite strong effects of biota source on teosinte fitness and traits.","authors":"Anna M O'Brien, Ruairidh J H Sawers, Jaime Gasca-Pineda, Ivan Baxter, Luis E Eguiarte, Jeffrey Ross-Ibarra, Sharon Y Strauss","doi":"10.1093/evolut/qpae130","DOIUrl":"10.1093/evolut/qpae130","url":null,"abstract":"While biotic interactions often impose selection, species and populations vary in whether they are locally adapted to biotic interactions. Evolutionary theory predicts that environmental conditions drive this variable local adaptation by altering the fitness impacts of species interactions. To investigate the influence of an environmental gradient on adaptation between a plant and its associated rhizosphere biota, we cross-combined teosinte (Zea mays ssp. mexicana) and rhizosphere biota collected across a gradient of decreasing temperature, precipitation, and nutrients in a greenhouse common garden experiment. We measured both fitness and phenotypes expected to be influenced by biota, including concentrations of nutrients in leaves. Independent, main effects of teosinte and biota source explained most variation in teosinte fitness and traits. For example, biota from warmer sites provided population-independent fitness benefits across teosinte hosts. Effects of biota that depended on teosinte genotype were often not specific to their local hosts, and most traits had similar relationships to fitness across biota treatments. However, we found weak patterns of local adaptation between teosinte and biota from colder sites, suggesting environmental gradients may alter the importance of local adaptation in teosinte-biota interactions, as evolutionary theory predicts.","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"1991-2005"},"PeriodicalIF":3.1,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142282520","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