{"title":"Colonization of a Novel Host Plant Reduces Phenotypic Variation","authors":"","doi":"10.1007/s11692-024-09634-7","DOIUrl":null,"url":null,"abstract":"<h3>Abstract</h3> <p>Understanding the evolution of evolvability—the evolutionary potential of populations—is key to predicting adaptation to novel environments. Despite growing evidence that evolvability structures adaptation, it remains unclear how adaptation to novel environments in turn influences evolvability. Here we address the interplay between adaptation and evolvability in the peacock fly <em>Tephritis conura,</em> which recently underwent an adaptive change in ovipositor length following a host shift. We compared the evolvability of morphological traits, including ovipositor length, between the ancestral and the derived host race. We found that mean evolvability was reduced in females of the derived host race compared to the ancestral host race. However, patterns of multivariate evolvability (considering trait covariances) were very similar in both host races, and populations of the derived host race had diverged from the ancestral host race in directions of greater-than-average evolvability. Exploration of phenotypic integration patterns further revealed relatively high levels of independent variation in ovipositor length compared to other measured traits, allowing some degree of independent divergence. Our findings suggest that adaptation to novel environments can reduce mean evolvability without major changes in patterns of variational constraints, and that trait autonomy helps facilitate divergence of functionally important traits.</p>","PeriodicalId":50471,"journal":{"name":"Evolutionary Biology","volume":null,"pages":null},"PeriodicalIF":1.9000,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Evolutionary Biology","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.1007/s11692-024-09634-7","RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"EVOLUTIONARY BIOLOGY","Score":null,"Total":0}
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Abstract
Understanding the evolution of evolvability—the evolutionary potential of populations—is key to predicting adaptation to novel environments. Despite growing evidence that evolvability structures adaptation, it remains unclear how adaptation to novel environments in turn influences evolvability. Here we address the interplay between adaptation and evolvability in the peacock fly Tephritis conura, which recently underwent an adaptive change in ovipositor length following a host shift. We compared the evolvability of morphological traits, including ovipositor length, between the ancestral and the derived host race. We found that mean evolvability was reduced in females of the derived host race compared to the ancestral host race. However, patterns of multivariate evolvability (considering trait covariances) were very similar in both host races, and populations of the derived host race had diverged from the ancestral host race in directions of greater-than-average evolvability. Exploration of phenotypic integration patterns further revealed relatively high levels of independent variation in ovipositor length compared to other measured traits, allowing some degree of independent divergence. Our findings suggest that adaptation to novel environments can reduce mean evolvability without major changes in patterns of variational constraints, and that trait autonomy helps facilitate divergence of functionally important traits.
期刊介绍：
The aim, scope, and format of Evolutionary Biology will be based on the following principles:
Evolutionary Biology will publish original articles and reviews that address issues and subjects of core concern in evolutionary biology. All papers must make original contributions to our understanding of the evolutionary process.
The journal will remain true to the original intent of the original series to provide a place for broad syntheses in evolutionary biology. Articles will contribute to this goal by defining the direction of current and future research and by building conceptual links between disciplines. In articles presenting an empirical analysis, the results of these analyses must be integrated within a broader evolutionary framework.
Authors are encouraged to submit papers presenting novel conceptual frameworks or major challenges to accepted ideas.
While brevity is encouraged, there is no formal restriction on length for major articles.
The journal aims to keep the time between original submission and appearance online to within four months and will encourage authors to revise rapidly once a paper has been submitted and deemed acceptable.
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