Claire Godineau, Konstantinos Theodorou, Rachel B Spigler
{"title":"Effect of the seed bank on evolutionary rescue in small populations: univariate and multivariate demo-genetic dynamics","authors":"Claire Godineau, Konstantinos Theodorou, Rachel B Spigler","doi":"10.1086/731402","DOIUrl":"https://doi.org/10.1086/731402","url":null,"abstract":"","PeriodicalId":501264,"journal":{"name":"The American Naturalist","volume":"40 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140969848","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}
Theresa Rueger, Chancey MacDonald, Hugo B. Harrison, Naomi M. Gardiner, Geoffrey P. Jones, Suzanne C. Mills
{"title":"Strength of sexual selection and sex roles vary between social groups in a coral reef cardinalfish","authors":"Theresa Rueger, Chancey MacDonald, Hugo B. Harrison, Naomi M. Gardiner, Geoffrey P. Jones, Suzanne C. Mills","doi":"10.1086/731422","DOIUrl":"https://doi.org/10.1086/731422","url":null,"abstract":"","PeriodicalId":501264,"journal":{"name":"The American Naturalist","volume":"18 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140969544","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}
{"title":"Trait-fitness associations via fecundity and competition in a two-million-year-long fossil record","authors":"L. H. Liow, Arthur Porto, E. Di Martino","doi":"10.1086/731332","DOIUrl":"https://doi.org/10.1086/731332","url":null,"abstract":"","PeriodicalId":501264,"journal":{"name":"The American Naturalist","volume":" 73","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140993264","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}
{"title":"Asynchronous life histories generate uneven arms races and impact the maintenance of mutualisms","authors":"Aaron Westmoreland, Nancy C. Emery","doi":"10.1086/731295","DOIUrl":"https://doi.org/10.1086/731295","url":null,"abstract":"","PeriodicalId":501264,"journal":{"name":"The American Naturalist","volume":"79 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141003986","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}
Anurag A. Agrawal, A. Hastings, Paul A. Lenhart, Michael Blecher, Christophe Duplais, Georg Petschenka, D. Hawlena, Vera Wagschal, Susanne Dobler
{"title":"Convergence and divergence among herbivorous insects specialized on toxic plants: revealing syndromes among the cardenolide-feeders across the insect tree of life","authors":"Anurag A. Agrawal, A. Hastings, Paul A. Lenhart, Michael Blecher, Christophe Duplais, Georg Petschenka, D. Hawlena, Vera Wagschal, Susanne Dobler","doi":"10.1086/731277","DOIUrl":"https://doi.org/10.1086/731277","url":null,"abstract":"","PeriodicalId":501264,"journal":{"name":"The American Naturalist","volume":"29 35","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141004441","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}
Daniel Papaj, Minjung Baek, Chloe Fung, Brooklyn A. Richards
{"title":"Seasonal Alternation of Putative Camouflage Wing Morphs of the American Snout Butterfly (Libytheana carinenta)","authors":"Daniel Papaj, Minjung Baek, Chloe Fung, Brooklyn A. Richards","doi":"10.1086/731294","DOIUrl":"https://doi.org/10.1086/731294","url":null,"abstract":"","PeriodicalId":501264,"journal":{"name":"The American Naturalist","volume":"25 32","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141005493","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}
Amy Waananen, Lea K. Richardson, Riley D. Thoen, Scott W. Nordstrom, Erin G. Eichenberger, Gretel Kiefer, Amy B. Dykstra, Ruth G. Shaw, Stuart Wagenius
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, Echinacea angustifolia. 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.
{"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}
The American Naturalist, Volume 203, Issue 5, May 2024.
美国博物学家》，第 203 卷第 5 期，2024 年 5 月。
{"title":"Front and Back Matter","authors":"","doi":"10.1086/730910","DOIUrl":"https://doi.org/10.1086/730910","url":null,"abstract":"The American Naturalist, Volume 203, Issue 5, May 2024. <br/>","PeriodicalId":501264,"journal":{"name":"The American Naturalist","volume":"53 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140627354","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}
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
In the world’s highest mountain ranges, uncertainty about the upper elevational range limits of alpine animals represents a critical knowledge gap regarding the environmental limits of life and presents a problem for detecting range shifts in response to climate change. Here we report results of mountaineering mammal surveys in the Central Andes, which led to the discovery of multiple species of mice living at extreme elevations that far surpass previously assumed range limits for mammals. We livetrapped small mammals from ecologically diverse sites spanning >6,700 m of vertical relief, from the desert coast of northern Chile to the summits of the highest volcanoes in the Andes. We used molecular sequence data and whole-genome sequence data to confirm the identities of species that represent new elevational records and to test hypotheses regarding species limits. These discoveries contribute to a new appreciation of the environmental limits of vertebrate life.
{"title":"Extreme High-Elevation Mammal Surveys Reveal Unexpectedly High Upper Range Limits of Andean Mice","authors":"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","doi":"10.1086/729513","DOIUrl":"https://doi.org/10.1086/729513","url":null,"abstract":"In the world’s highest mountain ranges, uncertainty about the upper elevational range limits of alpine animals represents a critical knowledge gap regarding the environmental limits of life and presents a problem for detecting range shifts in response to climate change. Here we report results of mountaineering mammal surveys in the Central Andes, which led to the discovery of multiple species of mice living at extreme elevations that far surpass previously assumed range limits for mammals. We livetrapped small mammals from ecologically diverse sites spanning >6,700 m of vertical relief, from the desert coast of northern Chile to the summits of the highest volcanoes in the Andes. We used molecular sequence data and whole-genome sequence data to confirm the identities of species that represent new elevational records and to test hypotheses regarding species limits. These discoveries contribute to a new appreciation of the environmental limits of vertebrate life.","PeriodicalId":501264,"journal":{"name":"The American Naturalist","volume":"49 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140609545","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}
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.
{"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}
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