Females with Attractive Mates Gain Environmental Benefits That Increase Lifetime and Multigenerational Fitness.

IF 2.4 2区环境科学与生态学 Q2 ECOLOGY

American Naturalist Pub Date : 2025-03-01 Epub Date: 2025-01-24 DOI:10.1086/733792

Douglas G Barron, Hubert Schwabl, Patrick A Carter, Daniel T Baldassarre, Willow R Lindsay, Jordan Karubian, Michael S Webster

{"title":"Females with Attractive Mates Gain Environmental Benefits That Increase Lifetime and Multigenerational Fitness.","authors":"Douglas G Barron, Hubert Schwabl, Patrick A Carter, Daniel T Baldassarre, Willow R Lindsay, Jordan Karubian, Michael S Webster","doi":"10.1086/733792","DOIUrl":null,"url":null,"abstract":"AbstractResolving the degree to which environmental (direct) versus genetic (indirect) benefits shape female mate choice is a long-standing challenge, particularly for socially monogamous species where male environmental and genetic contributions are difficult to disentangle. This study combines long-term population monitoring with quantitative genetic analyses in a socially monogamous but sexually promiscuous Australian songbird to demonstrate that female mating preferences are driven by nongenetic environmental benefits that increase the fitness of both the female and her offspring. Male Red-backed Fairywrens (Malurus melanocephalus) flexibly breed in either ornamented or unornamented plumage, and females consistently prefer ornamented males. Females paired with ornamented males bred earlier and allocated more to current reproduction yet experienced higher survival and lifetime fitness. Furthermore, these females produced more grand-offspring because their early-born sons were more likely to be ornamented and to breed successfully than the later-born sons of females with unornamented partners. Quantitative genetic models showed lifetime fitness was best explained by parental environment rather than genetic effects. Mating preferences in this system are maintained by a combination of primary environmental benefits that increase the lifetime fitness of choosy females and secondary environmental benefits that increase the multigenerational fitness of those females through enhanced offspring quality and performance.","PeriodicalId":50800,"journal":{"name":"American Naturalist","volume":"205 3","pages":"265-279"},"PeriodicalIF":2.4000,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"American Naturalist","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.1086/733792","RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/1/24 0:00:00","PubModel":"Epub","JCR":"Q2","JCRName":"ECOLOGY","Score":null,"Total":0}

引用次数: 0

Abstract

AbstractResolving the degree to which environmental (direct) versus genetic (indirect) benefits shape female mate choice is a long-standing challenge, particularly for socially monogamous species where male environmental and genetic contributions are difficult to disentangle. This study combines long-term population monitoring with quantitative genetic analyses in a socially monogamous but sexually promiscuous Australian songbird to demonstrate that female mating preferences are driven by nongenetic environmental benefits that increase the fitness of both the female and her offspring. Male Red-backed Fairywrens (Malurus melanocephalus) flexibly breed in either ornamented or unornamented plumage, and females consistently prefer ornamented males. Females paired with ornamented males bred earlier and allocated more to current reproduction yet experienced higher survival and lifetime fitness. Furthermore, these females produced more grand-offspring because their early-born sons were more likely to be ornamented and to breed successfully than the later-born sons of females with unornamented partners. Quantitative genetic models showed lifetime fitness was best explained by parental environment rather than genetic effects. Mating preferences in this system are maintained by a combination of primary environmental benefits that increase the lifetime fitness of choosy females and secondary environmental benefits that increase the multigenerational fitness of those females through enhanced offspring quality and performance.

查看原文本刊更多论文

有吸引力的配偶的雌性获得了环境效益，增加了寿命和多代适应度。

摘要解决环境（直接）与遗传（间接）利益影响雌性配偶选择的程度是一个长期存在的挑战，特别是对于社会一夫一妻制的物种，雄性环境和遗传的贡献很难分开。本研究结合长期种群监测和定量遗传分析，对一种社会一夫一妻制但性滥交的澳大利亚鸣禽进行了研究，以证明雌性的交配偏好是由非遗传环境利益驱动的，这种利益增加了雌性和后代的适应性。雄性红背鹩莺（Malurus melanocephalus）可以灵活地在有装饰或没有装饰的羽毛上繁殖，雌性始终喜欢有装饰的雄性。与有装饰的雄性配对的雌性繁殖得更早，分配给当前繁殖的更多，但它们的存活率和终身适应性更高。此外，这些雌性产生了更多的后代，因为它们早期出生的儿子更有可能被装饰，并且比没有装饰的雌性的后代更成功地繁殖。定量遗传模型表明，亲代环境比遗传效应更能解释终生适应性。在这一系统中，交配偏好是由两种因素共同维持的：一种是主要的环境利益，增加了有选择的雌性的终生适应性；另一种是次要的环境利益，通过提高后代的质量和表现，增加了这些雌性的多代适应性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

American Naturalist 环境科学-进化生物学

CiteScore

5.40

自引率

3.40%

发文量

194

审稿时长

3 months

期刊介绍： Since its inception in 1867, The American Naturalist has maintained its position as one of the world''s premier peer-reviewed publications in ecology, evolution, and behavior research. Its goals are to publish articles that are of broad interest to the readership, pose new and significant problems, introduce novel subjects, develop conceptual unification, and change the way people think. AmNat emphasizes sophisticated methodologies and innovative theoretical syntheses—all in an effort to advance the knowledge of organic evolution and other broad biological principles.