The American Naturalist最新文献_第4页

Effect of the seed bank on evolutionary rescue in small populations: univariate and multivariate demo-genetic dynamics 种子库对小种群进化拯救的影响：单变量和多变量人口遗传动力学

The American Naturalist Pub Date : 2024-05-16 DOI: 10.1086/731402

Claire Godineau, Konstantinos Theodorou, Rachel B Spigler

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Strength of sexual selection and sex roles vary between social groups in a coral reef cardinalfish 珊瑚礁红雀鱼不同社会群体的性选择强度和性别角色各不相同

The American Naturalist Pub Date : 2024-05-16 DOI: 10.1086/731422

Theresa Rueger, Chancey MacDonald, Hugo B. Harrison, Naomi M. Gardiner, Geoffrey P. Jones, Suzanne C. Mills

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Trait-fitness associations via fecundity and competition in a two-million-year-long fossil record 长达 200 万年的化石记录中通过繁殖力和竞争产生的性状-适性关联

The American Naturalist Pub Date : 2024-05-10 DOI: 10.1086/731332

L. H. Liow, Arthur Porto, E. Di Martino

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Asynchronous life histories generate uneven arms races and impact the maintenance of mutualisms 不同步的生命历程会导致不均衡的军备竞赛，并影响互生关系的维持

The American Naturalist Pub Date : 2024-05-07 DOI: 10.1086/731295

Aaron Westmoreland, Nancy C. Emery

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Convergence and divergence among herbivorous insects specialized on toxic plants: revealing syndromes among the cardenolide-feeders across the insect tree of life 专食有毒植物的草食性昆虫之间的趋同与分化：揭示昆虫生命树上贲门失弛缓症的综合征

The American Naturalist Pub Date : 2024-05-07 DOI: 10.1086/731277

Anurag A. Agrawal, A. Hastings, Paul A. Lenhart, Michael Blecher, Christophe Duplais, Georg Petschenka, D. Hawlena, Vera Wagschal, Susanne Dobler

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Seasonal Alternation of Putative Camouflage Wing Morphs of the American Snout Butterfly (Libytheana carinenta) 美国鼻蝶（Libytheana carinenta）伪装翼形态的季节交替

The American Naturalist Pub Date : 2024-05-07 DOI: 10.1086/731294

Daniel Papaj, Minjung Baek, Chloe Fung, Brooklyn A. Richards

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High Juvenile Mortality Overwhelms Benefits of Mating Potential for Reproductive Fitness 幼年期死亡率高压倒了交配潜能对生殖健康的益处

The American Naturalist Pub Date : 2024-04-24 DOI: 10.1086/730112

Amy Waananen, Lea K. Richardson, Riley D. Thoen, Scott W. Nordstrom, Erin G. Eichenberger, Gretel Kiefer, Amy B. Dykstra, Ruth G. Shaw, Stuart Wagenius

{"title":"High Juvenile Mortality Overwhelms Benefits of Mating Potential for Reproductive Fitness","authors":"Amy Waananen, Lea K. Richardson, Riley D. Thoen, Scott W. Nordstrom, Erin G. Eichenberger, Gretel Kiefer, Amy B. Dykstra, Ruth G. Shaw, Stuart Wagenius","doi":"10.1086/730112","DOIUrl":"https://doi.org/10.1086/730112","url":null,"abstract":"An individual’s access to mates (i.e., its “mating potential”) can constrain its reproduction but may also influence its fitness through effects on offspring survival. For instance, mate proximity may correspond with relatedness and lead to inbreeding depression in offspring. While offspring production and survival might respond differently to mating potential, previous studies have not considered the simultaneous effects of mating potential on these fitness components. We investigated the relationship of mating potential with both production and survival of offspring in populations of a long-lived herbaceous perennial, <i>Echinacea angustifolia</i>. Across 7 years and 14 sites, we quantified the mating potential of maternal plants in 1,278 mating bouts and followed the offspring from these bouts over 8 years. We used aster models to evaluate the relationship of mating potential with the number of offspring that emerged and that were alive after 8 years. Seedling emergence increased with mating potential. Despite this, the number of offspring surviving after 8 years showed no relationship to mating potential. Our results support the broader conclusion that the effect of mating potential on fitness erodes over time because of demographic stochasticity at the maternal level.","PeriodicalId":501264,"journal":{"name":"The American Naturalist","volume":"46 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140806768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Front and Back Matter 正反两面

The American Naturalist Pub Date : 2024-04-18 DOI: 10.1086/730910

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Extreme High-Elevation Mammal Surveys Reveal Unexpectedly High Upper Range Limits of Andean Mice 极端高海拔哺乳动物调查显示安第斯小鼠的活动范围上限出乎意料地高

The American Naturalist Pub Date : 2024-04-17 DOI: 10.1086/729513

Jay F. Storz, Marcial Quiroga-Carmona, Schuyler Liphardt, Nathanael D. Herrera, Naim M. Bautista, Juan C. Opazo, Adriana Rico-Cernohorska, Jorge Salazar-Bravo, Jeffrey M. Good, Guillermo D’Elía

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Understanding the Role of Naive Learners in Cultural Change 了解天真学习者在文化变革中的作用

The American Naturalist Pub Date : 2024-04-15 DOI: 10.1086/730110

Michael Chimento, Lucy M. Aplin

{"title":"Understanding the Role of Naive Learners in Cultural Change","authors":"Michael Chimento, Lucy M. Aplin","doi":"10.1086/730110","DOIUrl":"https://doi.org/10.1086/730110","url":null,"abstract":"A change to a population’s social network is a change to the substrate of cultural transmission, affecting behavioral diversity and adaptive cultural evolution. While features of network structure such as population size and density have been well studied, less is understood about the influence of social processes such as population turnover—or the repeated replacement of individuals by naive individuals. Experimental data have led to the hypothesis that naive learners can drive cultural evolution by better assessing the relative value of behaviors, although this hypothesis has been expressed only verbally. We conducted a formal exploration of this hypothesis using a generative model that concurrently simulated its two key ingredients: social transmission and reinforcement learning. We simulated competition between high- and low-reward behaviors while varying turnover magnitude and tempo. Variation in turnover influenced changes in the distributions of cultural behaviors, irrespective of initial knowledge-state conditions. We found optimal turnover regimes that amplified the production of higher reward behaviors through two key mechanisms: repertoire composition and enhanced valuation by agents that knew both behaviors. These effects depended on network and learning parameters. Our model provides formal theoretical support for, and predictions about, the hypothesis that naive learners can shape cultural change through their enhanced sampling ability. By moving from experimental data to theory, we illuminate an underdiscussed generative process that can lead to changes in cultural behavior, arising from an interaction between social dynamics and learning.","PeriodicalId":501264,"journal":{"name":"The American Naturalist","volume":"125 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140569726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0