在屋顶筑巢的银鸥(Larus argentatus)在高营养水平的饮食中主要依靠陆地觅食和繁殖

IF 2.3 2区 生物学 Q2 ECOLOGY
Simon F. Allen, Richard Inger, Paige E. Petts, Jody M. Affleck, Katie Bennett, Tom W. Davies, Ben D. Haden, Luke C. Hughes, Neeltje J. Boogert, Chris Mitchell, Eva Jimenez-Guri, Jonathan D. Blount
{"title":"在屋顶筑巢的银鸥(Larus argentatus)在高营养水平的饮食中主要依靠陆地觅食和繁殖","authors":"Simon F. Allen,&nbsp;Richard Inger,&nbsp;Paige E. Petts,&nbsp;Jody M. Affleck,&nbsp;Katie Bennett,&nbsp;Tom W. Davies,&nbsp;Ben D. Haden,&nbsp;Luke C. Hughes,&nbsp;Neeltje J. Boogert,&nbsp;Chris Mitchell,&nbsp;Eva Jimenez-Guri,&nbsp;Jonathan D. Blount","doi":"10.1002/ece3.72307","DOIUrl":null,"url":null,"abstract":"<p>Wild animal species often use human-modified environments for foraging and reproduction, but this may require dietary diversification with fitness consequences. The extent to which colonising species successfully exploit such habitats is poorly understood. We used stable isotope analysis of egg yolk to investigate the association between foraging choices and reproductive success in 102 female herring gulls (<i>Larus argentatus</i>) over 3 years in a roof-nesting, pericoastal breeding colony. Stable isotopes of egg yolk predominantly reflect maternal diet during egg production. We measured δ<sup>13</sup>C as an indicator of foraging habitat, and δ<sup>15</sup>N as an indicator of trophic level. We predicted diverse foraging choices across marine, terrestrial and urban environments due to gulls' generalist foraging strategy and the variety of nearby foraging opportunities. We also predicted higher reproductive success associated with marine feeding compared to terrestrial feeding or feeding on human food and refuse, because marine food has historically been gulls' natural food type and has been previously associated with greater reproductive success. Surprisingly, δ<sup>13</sup>C values indicated predominantly terrestrial foraging for egg production. Egg mass increased significantly with lower δ<sup>13</sup>C, indicative of more terrestrial feeding. These findings may reflect availability of habitats and foods nearby or indicate adaptive dietary choices. Fledging success increased significantly with elevated δ<sup>15</sup>N, indicating that mothers feeding at higher trophic levels before laying produced higher quality eggs and/or had superior offspring-rearing capacity. A high trophic level maternal diet may nutritionally benefit offspring or improve parental condition. Egg stable isotope ratios of δ<sup>13</sup>C and δ<sup>15</sup>N were highly repeatable within clutches, enabling us to predict stable isotope values of unsampled eggs from sampled sibling eggs. Our results highlight high usage of terrestrial foods for egg production, whereas marine and anthropogenic feeding were rare. The reasons for this preference warrant further investigation to advance understanding of species that use human-modified environments.</p>","PeriodicalId":11467,"journal":{"name":"Ecology and Evolution","volume":"15 10","pages":""},"PeriodicalIF":2.3000,"publicationDate":"2025-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ece3.72307","citationCount":"0","resultStr":"{\"title\":\"Predominantly Terrestrial Foraging and Reproductive Gains From a High Trophic Level Diet in Roof-Nesting Herring Gulls (Larus argentatus)\",\"authors\":\"Simon F. Allen,&nbsp;Richard Inger,&nbsp;Paige E. Petts,&nbsp;Jody M. Affleck,&nbsp;Katie Bennett,&nbsp;Tom W. Davies,&nbsp;Ben D. Haden,&nbsp;Luke C. Hughes,&nbsp;Neeltje J. Boogert,&nbsp;Chris Mitchell,&nbsp;Eva Jimenez-Guri,&nbsp;Jonathan D. Blount\",\"doi\":\"10.1002/ece3.72307\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Wild animal species often use human-modified environments for foraging and reproduction, but this may require dietary diversification with fitness consequences. The extent to which colonising species successfully exploit such habitats is poorly understood. We used stable isotope analysis of egg yolk to investigate the association between foraging choices and reproductive success in 102 female herring gulls (<i>Larus argentatus</i>) over 3 years in a roof-nesting, pericoastal breeding colony. Stable isotopes of egg yolk predominantly reflect maternal diet during egg production. We measured δ<sup>13</sup>C as an indicator of foraging habitat, and δ<sup>15</sup>N as an indicator of trophic level. We predicted diverse foraging choices across marine, terrestrial and urban environments due to gulls' generalist foraging strategy and the variety of nearby foraging opportunities. We also predicted higher reproductive success associated with marine feeding compared to terrestrial feeding or feeding on human food and refuse, because marine food has historically been gulls' natural food type and has been previously associated with greater reproductive success. Surprisingly, δ<sup>13</sup>C values indicated predominantly terrestrial foraging for egg production. Egg mass increased significantly with lower δ<sup>13</sup>C, indicative of more terrestrial feeding. These findings may reflect availability of habitats and foods nearby or indicate adaptive dietary choices. Fledging success increased significantly with elevated δ<sup>15</sup>N, indicating that mothers feeding at higher trophic levels before laying produced higher quality eggs and/or had superior offspring-rearing capacity. A high trophic level maternal diet may nutritionally benefit offspring or improve parental condition. Egg stable isotope ratios of δ<sup>13</sup>C and δ<sup>15</sup>N were highly repeatable within clutches, enabling us to predict stable isotope values of unsampled eggs from sampled sibling eggs. Our results highlight high usage of terrestrial foods for egg production, whereas marine and anthropogenic feeding were rare. The reasons for this preference warrant further investigation to advance understanding of species that use human-modified environments.</p>\",\"PeriodicalId\":11467,\"journal\":{\"name\":\"Ecology and Evolution\",\"volume\":\"15 10\",\"pages\":\"\"},\"PeriodicalIF\":2.3000,\"publicationDate\":\"2025-10-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ece3.72307\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Ecology and Evolution\",\"FirstCategoryId\":\"99\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/ece3.72307\",\"RegionNum\":2,\"RegionCategory\":\"生物学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ECOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ecology and Evolution","FirstCategoryId":"99","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/ece3.72307","RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ECOLOGY","Score":null,"Total":0}
引用次数: 0

摘要

野生动物经常在人类改造的环境中觅食和繁殖,但这可能需要饮食多样化和适应性后果。在多大程度上,殖民物种成功地利用了这些栖息地,人们知之甚少。本文利用蛋黄稳定同位素分析方法,研究了102只雌性银鸥(Larus argentatus) 3年的觅食选择与繁殖成功之间的关系。卵黄的稳定同位素主要反映了产蛋过程中母体的饮食。我们测量了δ13C和δ15N分别作为觅食生境和营养水平的指标。我们预测,由于海鸥的多面手觅食策略和附近觅食机会的多样性,它们在海洋、陆地和城市环境中有不同的觅食选择。我们还预测,与陆地捕食或人类食物和垃圾捕食相比,海洋捕食的繁殖成功率更高,因为海洋食物在历史上一直是海鸥的天然食物类型,以前与更大的繁殖成功率有关。令人惊讶的是,δ13C值表明主要是陆生觅食产蛋。随着δ13C的降低,蛋质量显著增加,表明更多地以陆地为食。这些发现可能反映了附近栖息地和食物的可用性,或者表明适应性饮食选择。随着δ15N的升高,羽化成功率显著提高,表明产蛋前营养水平越高的雏鸡产蛋质量越高,或雏鸡育仔能力越强。高营养水平的母亲饮食可能在营养上有益于后代或改善父母的状况。卵的δ13C和δ15N稳定同位素比值在卵群内具有高度可重复性,使我们能够预测未取样卵的稳定同位素值。我们的研究结果强调了陆地食物对鸡蛋生产的高度使用,而海洋和人为喂养很少。这种偏好的原因值得进一步调查,以促进对使用人类改造环境的物种的了解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Predominantly Terrestrial Foraging and Reproductive Gains From a High Trophic Level Diet in Roof-Nesting Herring Gulls (Larus argentatus)

Predominantly Terrestrial Foraging and Reproductive Gains From a High Trophic Level Diet in Roof-Nesting Herring Gulls (Larus argentatus)

Wild animal species often use human-modified environments for foraging and reproduction, but this may require dietary diversification with fitness consequences. The extent to which colonising species successfully exploit such habitats is poorly understood. We used stable isotope analysis of egg yolk to investigate the association between foraging choices and reproductive success in 102 female herring gulls (Larus argentatus) over 3 years in a roof-nesting, pericoastal breeding colony. Stable isotopes of egg yolk predominantly reflect maternal diet during egg production. We measured δ13C as an indicator of foraging habitat, and δ15N as an indicator of trophic level. We predicted diverse foraging choices across marine, terrestrial and urban environments due to gulls' generalist foraging strategy and the variety of nearby foraging opportunities. We also predicted higher reproductive success associated with marine feeding compared to terrestrial feeding or feeding on human food and refuse, because marine food has historically been gulls' natural food type and has been previously associated with greater reproductive success. Surprisingly, δ13C values indicated predominantly terrestrial foraging for egg production. Egg mass increased significantly with lower δ13C, indicative of more terrestrial feeding. These findings may reflect availability of habitats and foods nearby or indicate adaptive dietary choices. Fledging success increased significantly with elevated δ15N, indicating that mothers feeding at higher trophic levels before laying produced higher quality eggs and/or had superior offspring-rearing capacity. A high trophic level maternal diet may nutritionally benefit offspring or improve parental condition. Egg stable isotope ratios of δ13C and δ15N were highly repeatable within clutches, enabling us to predict stable isotope values of unsampled eggs from sampled sibling eggs. Our results highlight high usage of terrestrial foods for egg production, whereas marine and anthropogenic feeding were rare. The reasons for this preference warrant further investigation to advance understanding of species that use human-modified environments.

求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
CiteScore
4.40
自引率
3.80%
发文量
1027
审稿时长
3-6 weeks
期刊介绍: Ecology and Evolution is the peer reviewed journal for rapid dissemination of research in all areas of ecology, evolution and conservation science. The journal gives priority to quality research reports, theoretical or empirical, that develop our understanding of organisms and their diversity, interactions between them, and the natural environment. Ecology and Evolution gives prompt and equal consideration to papers reporting theoretical, experimental, applied and descriptive work in terrestrial and aquatic environments. The journal will consider submissions across taxa in areas including but not limited to micro and macro ecological and evolutionary processes, characteristics of and interactions between individuals, populations, communities and the environment, physiological responses to environmental change, population genetics and phylogenetics, relatedness and kin selection, life histories, systematics and taxonomy, conservation genetics, extinction, speciation, adaption, behaviour, biodiversity, species abundance, macroecology, population and ecosystem dynamics, and conservation policy.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信