American Naturalist最新文献_第10页

Larval and adult traits coevolve in response to asymmetric coastal currents to shape marine dispersal kernels 幼虫和成虫的特征共同进化，以响应不对称的海岸潮流，形成海洋扩散核

2区环境科学与生态学

American Naturalist Pub Date : 2023-09-29 DOI: 10.1086/728003

James H Peniston, Scott C. Burgess

引用次数: 0

Front and Back Matter 正面和背面

2区环境科学与生态学

American Naturalist Pub Date : 2023-09-01 DOI: 10.1086/727481

引用次数: 0

Patterns of Plant Salinity Adaptation Depend on Interactions with Soil Microbes. 植物盐度适应模式依赖于与土壤微生物的相互作用。

IF 2.9 2区环境科学与生态学

American Naturalist Pub Date : 2023-09-01 DOI: 10.1086/725393

Kevin D Ricks, Nathan J Ricks, Anthony C Yannarell

{"title":"Patterns of Plant Salinity Adaptation Depend on Interactions with Soil Microbes.","authors":"Kevin D Ricks, Nathan J Ricks, Anthony C Yannarell","doi":"10.1086/725393","DOIUrl":"https://doi.org/10.1086/725393","url":null,"abstract":"AbstractAs plant-microbe interactions are both ubiquitous and critical in shaping plant fitness, patterns of plant adaptation to their local environment may be influenced by these interactions. Identifying the contribution of soil microbes to plant adaptation may provide insight into the evolution of plant traits and their microbial symbioses. To this end, we assessed the contribution of soil microbes to plant salinity adaptation by growing 10 populations of Bromus tectorum, collected from habitats differing in their salinity, in the greenhouse under either high-salinity or nonsaline conditions and with or without soil microbial partners. Across two live soil inoculum treatments, we found evidence for adaptation of these populations to their home salinity environment. However, when grown in sterile soils, plants were slightly maladapted to their home salinity environment. As plants were on average more fit in sterile soils, pathogenic microbes may have been significant drivers of plant fitness herein. Consequently, we hypothesized that the plant fitness advantage in their home salinity may have been due to increased plant resistance to pathogenic attack in those salinity environments. Our results highlight that plant-microbe interactions may partially mediate patterns of plant adaptation as well as be important selective agents in plant evolution.","PeriodicalId":50800,"journal":{"name":"American Naturalist","volume":"202 3","pages":"276-287"},"PeriodicalIF":2.9,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10425876","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 Joint Evolution of Animal Movement and Competition Strategies. 动物运动与竞争策略的联合进化。

IF 2.9 2区环境科学与生态学

American Naturalist Pub Date : 2023-09-01 DOI: 10.1086/725394

Pratik R Gupte, Christoph Netz, Franz J Weissing

{"title":"The Joint Evolution of Animal Movement and Competition Strategies.","authors":"Pratik R Gupte, Christoph Netz, Franz J Weissing","doi":"10.1086/725394","DOIUrl":"https://doi.org/10.1086/725394","url":null,"abstract":"AbstractCompetition typically takes place in a spatial context, but eco-evolutionary models rarely address the joint evolution of movement and competition strategies. Here we investigate a spatially explicit forager-kleptoparasite model where consumers can either forage on a heterogeneous resource landscape or steal resource items from conspecifics (kleptoparasitism). We consider three scenarios: (1) foragers without kleptoparasites, (2) consumers specializing as foragers or as kleptoparasites, and (3) consumers that can switch between foraging and kleptoparasitism depending on local conditions. We model movement strategies as individual-specific combinations of preferences for environmental cues, similar to step-selection coefficients. Using mechanistic, individual-based simulations, we study the joint evolution of movement and competition strategies, and we investigate the implications for the distribution of consumers over this landscape. Movement and competition strategies evolve rapidly and consistently across scenarios, with marked differences among scenarios, leading to differences in resource exploitation patterns. In scenario 1, foragers evolve considerable individual variation in movement strategies, while in scenario 2, movement strategies show a swift divergence between foragers and kleptoparasites. In scenario 3, where individuals' competition strategies are conditional on local cues, movement strategies facilitate kleptoparasitism, and individual consistency in competition strategy also emerges. Even in the absence of kleptoparasitism (scenario 1), the distribution of consumers deviates considerably from predictions of ideal free distribution models because of the intrinsic difficulty of moving effectively on a depleted resource landscape with few reliable cues. Our study emphasizes the advantages of a mechanistic approach when studying competition in a spatial context and suggests how evolutionary modeling can be integrated with current work in animal movement ecology.","PeriodicalId":50800,"journal":{"name":"American Naturalist","volume":"202 3","pages":"E65-E82"},"PeriodicalIF":2.9,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10050321","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: 2

Genetic Variation in Sexual Size Dimorphism Is Associated with Variation in Sex-Specific Plasticity in Drosophila. 果蝇性别大小二态性的遗传变异与性别特异性可塑性的变异有关。

IF 2.9 2区环境科学与生态学

American Naturalist Pub Date : 2023-09-01 DOI: 10.1086/725420

Isabelle M Vea, Austin S Wilcox, W Anthony Frankino, Alexander W Shingleton

{"title":"Genetic Variation in Sexual Size Dimorphism Is Associated with Variation in Sex-Specific Plasticity in Drosophila.","authors":"Isabelle M Vea, Austin S Wilcox, W Anthony Frankino, Alexander W Shingleton","doi":"10.1086/725420","DOIUrl":"https://doi.org/10.1086/725420","url":null,"abstract":"AbstractThe difference in body size between females and males, or sexual size dimorphism (SSD), is ubiquitous, yet we have a poor understanding of the developmental genetic mechanisms that generate it and how these mechanisms may vary within and among species. Such an understanding of the genetic architecture of SSD is important if we are to evaluate alternative models of SSD evolution, but the genetic architecture is difficult to describe because SSD is a characteristic of populations, not individuals. Here, we overcome this challenge by using isogenic lineages of Drosophila to measure SSD for 196 genotypes. We demonstrate extensive genetic variation for SSD, primarily driven by higher levels of genetic variation for body size among females than among males. While we observe a general increase in SSD with sex-averaged body size (pooling for sex) among lineages, most of the variation in SSD is independent of sex-averaged body size and shows a strong genetic correlation with sex-specific plasticity, such that increased female-biased SSD is associated with increased body size plasticity in females. Our data are consistent with the condition dependence hypothesis of sexual dimorphism and suggest that SSD in Drosophila is a consequence of selection on the developmental genetic mechanisms that regulate the plasticity of body size.","PeriodicalId":50800,"journal":{"name":"American Naturalist","volume":"202 3","pages":"368-381"},"PeriodicalIF":2.9,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10050324","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

Coupled Oscillators in an Agroecosystem: Integrating Direct and Indirect Effects. 耦合振荡在农业生态系统:整合直接和间接影响。

IF 2.9 2区环境科学与生态学

American Naturalist Pub Date : 2023-09-01 DOI: 10.1086/725439

John Vandermeer

{"title":"Coupled Oscillators in an Agroecosystem: Integrating Direct and Indirect Effects.","authors":"John Vandermeer","doi":"10.1086/725439","DOIUrl":"https://doi.org/10.1086/725439","url":null,"abstract":"AbstractAgricultural pests are increasingly appreciated as subjects of ecology. One particular case, a pest in coffee production, is analyzed here using the conceptual framework of complex systems, increasingly acknowledged as having an obvious home in the field of ecology, notorious for its complex structures. The particular case analyzed here arguably falls under the control of the complexity of the ecological system rather than of a simple magic bullet of population regulation. The system, which has been under study in southern Mexico for the past quarter century, is analyzed through the lens of neutral oscillations of the classical nondissipative Lotka-Volterra system. Based on three consumer/resource pairs (populations of [1] an ant, [2] a scale insect, [3] a beetle predator of the scale insect, [4] a fungal pathogen of the scale insect, and [5] a fly parasitoid of the ant), this five-dimensional system is well known qualitatively. Coupling all agents through both direct effects and trait-mediated indirect effects, the behavior of the neutral oscillation form of the system reveals a complex set of behaviors, including harmonized invariant sets, chaos, and/or quasiperiodicity. Such behaviors are well-known subjects in the science of complex systems and, it is argued, are ultimately sufficient to effect a degree of regulation on the pest, independent of explicit density-dependent feedback. Control of the system is thus seen as arguably actuated through its complexity, independent of any classic dissipative force.","PeriodicalId":50800,"journal":{"name":"American Naturalist","volume":"202 3","pages":"288-301"},"PeriodicalIF":2.9,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10055253","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

Population Rescue through an Increase in the Selfing Rate under Pollen Limitation: Plasticity versus Evolution. 花粉限制下自交率增加对种群的拯救:可塑性与进化。

IF 2.9 2区环境科学与生态学

American Naturalist Pub Date : 2023-09-01 DOI: 10.1086/725425

Kuangyi Xu

{"title":"Population Rescue through an Increase in the Selfing Rate under Pollen Limitation: Plasticity versus Evolution.","authors":"Kuangyi Xu","doi":"10.1086/725425","DOIUrl":"https://doi.org/10.1086/725425","url":null,"abstract":"AbstractIncreased rates of self-fertilization offer reproductive assurance when plant populations experience pollen limitation, but self-fertilization may reduce fitness by exposing deleterious mutations. If an environmental change responsible for pollen limitation also induces plastic mating system shifts toward self-pollination, the reproductive assurance benefit and inbreeding depression cost of increased self-fertilization occur immediately, while the benefit and cost happen more gradually when increased self-fertilization occur through evolution. I built eco-evolutionary models to explore the demographic and genetic conditions in which higher self-fertilization by plasticity and/or evolution rescues populations, following deficits due to a sudden onset of pollen limitation. Rescue is most likely under an intermediate level of selfing rate increase, either through plasticity or evolution, and this critical level of selfing rate increase is higher under stronger pollen limitation. Generally, rescue is more likely through plasticity than through evolution. Under weak pollen limitation, rescue by enhanced self-fertilization may mainly occur through purging of deleterious mutations rather than reproductive assurance. The selfing rate increase conferring the highest rescue probability is lower when the initial population size is smaller. This article shows the importance of plasticity during plant population rescue and offers insights for future studies of the evolution of mating system plasticity.","PeriodicalId":50800,"journal":{"name":"American Naturalist","volume":"202 3","pages":"337-350"},"PeriodicalIF":2.9,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10050325","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

Individual Quality Drives Life History Variation in a Long-Lived Marine Predator. 个体品质驱动长寿海洋捕食者的生活史变异。

IF 2.9 2区环境科学与生态学

American Naturalist Pub Date : 2023-09-01 DOI: 10.1086/725451

Janelle J Badger, W Don Bowen, Cornelia E den Heyer, Greg A Breed

{"title":"Individual Quality Drives Life History Variation in a Long-Lived Marine Predator.","authors":"Janelle J Badger, W Don Bowen, Cornelia E den Heyer, Greg A Breed","doi":"10.1086/725451","DOIUrl":"https://doi.org/10.1086/725451","url":null,"abstract":"AbstractIndividual quality and environmental conditions may mask or interact with energetic trade-offs in life history evolution. Deconstructing these sources of variation is especially difficult in long-lived species that are rarely observed on timescales long enough to disentangle these effects. Here, we investigated relative support for variation in female quality and costs of reproduction as factors shaping differences in life history trajectories using a 32-year dataset of repeated reproductive measurements from 273 marked, known-age female gray seals (Halichoerus grypus). We defined individual reproductive investment using two traits, reproductive frequency (a female's probability of breeding) and provisioning performance (offspring weaning mass). Fitted hierarchical Bayesian models identified individual investment relative to conspecifics (over a female's entire life and in three age classes) and subsequently estimated how these investment metrics and the Atlantic Multidecadal Oscillation are associated with longevity. Individual differences (i.e., quality) contributed a large portion of the variance in reproductive traits. Females that consistently invest well in their offspring relative to other females survive longer. The best-supported model estimated survival as a function of age class-specific provisioning performance, where late-life performance was particularly variable and had the greatest impact on survival, possibly indicating individual variation in senescence. There was no evidence to support a trade-off in reproductive performance and survival at the individual level. Overall, these results suggest that in gray seals, individual quality is a stronger driver in life history variation than individual strategies resulting from energetic trade-offs.","PeriodicalId":50800,"journal":{"name":"American Naturalist","volume":"202 3","pages":"351-367"},"PeriodicalIF":2.9,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10050320","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

Trait-Specific Indirect Effects Underlie Variation in the Response of Spiders to Cannibalistic Social Partners. 特征特异性间接效应是蜘蛛对同类相食的社会伙伴反应变化的基础。

IF 2.9 2区环境科学与生态学

American Naturalist Pub Date : 2023-09-01 DOI: 10.1086/725427

Jorge F Henriques, Mariángeles Lacava, Celeste Guzman, Maria Pilar Gavin-Centol, Dolores Ruiz-Lupión, Alberto Ruiz, Carmen Viera, Jordi Moya-Laraño, Sara Magalhães

{"title":"Trait-Specific Indirect Effects Underlie Variation in the Response of Spiders to Cannibalistic Social Partners.","authors":"Jorge F Henriques, Mariángeles Lacava, Celeste Guzman, Maria Pilar Gavin-Centol, Dolores Ruiz-Lupión, Alberto Ruiz, Carmen Viera, Jordi Moya-Laraño, Sara Magalhães","doi":"10.1086/725427","DOIUrl":"https://doi.org/10.1086/725427","url":null,"abstract":"AbstractIn cannibalistic species, selection to avoid conspecifics may stem from the need to avoid being eaten or to avoid competition. Individuals may thus use conspecific cues to modulate their behavior to such threats. Yet the nature of variation for such cues remains elusive. Here, we use a half-sib/full-sib design to evaluate the contribution of (indirect) genetic or environmental effects to the behavioral response of the cannibalistic wolf spider Lycosa fasciiventris (Dufour, 1835) toward conspecific cues. Spiders showed variation in relative occupancy time, activity, and velocity on patches with or without conspecific cues, but direct genetic variance was found only for occupancy time. These three traits were correlated and could be lumped in a principal component: spiders spending more time in patches with conspecific cues moved less and more slowly in those areas. Genetic and/or environmental components of carapace width and weight loss in the social partner, which may reflect the quality and/or quantity of cues produced, were significantly correlated with this principal component, with larger partners causing focal individuals to move more slowly. Therefore, environmental and genetic trait variation in social partners may maintain trait diversity in focal individuals, even in the absence of direct genetic variation.","PeriodicalId":50800,"journal":{"name":"American Naturalist","volume":"202 3","pages":"322-336"},"PeriodicalIF":2.9,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10425874","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

Fire Responses Shape Plant Communities in a Minimal Model for Fire Ecosystems across the World. 火灾响应在全球火灾生态系统的最小模型中塑造植物群落。

IF 2.9 2区环境科学与生态学

American Naturalist Pub Date : 2023-09-01 DOI: 10.1086/725391

Marta Magnani, Rubén Díaz-Sierra, Luke Sweeney, Antonello Provenzale, Mara Baudena

{"title":"Fire Responses Shape Plant Communities in a Minimal Model for Fire Ecosystems across the World.","authors":"Marta Magnani, Rubén Díaz-Sierra, Luke Sweeney, Antonello Provenzale, Mara Baudena","doi":"10.1086/725391","DOIUrl":"https://doi.org/10.1086/725391","url":null,"abstract":"AbstractAcross plant communities worldwide, fire regimes reflect a combination of climatic factors and plant characteristics. To shed new light on the complex relationships between plant characteristics and fire regimes, we developed a new conceptual mechanistic model that includes plant competition, stochastic fires, and fire-vegetation feedback. Considering a single standing plant functional type, we observed that highly flammable and slowly colonizing plants can persist only when they have a strong fire response, while fast colonizing and less flammable plants can display a larger range of fire responses. At the community level, the fire response of the strongest competitor determines the existence of alternative ecological states (i.e., different plant communities) under the same environmental conditions. Specifically, when the strongest competitor had a very strong fire response, such as in Mediterranean forests, only one ecological state could be achieved. Conversely, when the strongest competitor was poorly fire adapted, alternative ecological states emerged-for example, between tropical humid savannas and forests or between different types of boreal forests. These findings underline the importance of including the plant fire response when modeling fire ecosystems, for example, to predict the vegetation response to invasive species or to climate change.","PeriodicalId":50800,"journal":{"name":"American Naturalist","volume":"202 3","pages":"E83-E103"},"PeriodicalIF":2.9,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10425875","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: 8