Environmental drivers of female reproductive investment in egg quantity and quality in a grassland sparrow

IF 1.8 3区 生物学 Q1 ORNITHOLOGY Ibis Pub Date : 2024-11-27 DOI:10.1111/ibi.13379
Elizabeth N. Sroor, W. Alice Boyle, Henry N. Castro-Miller, Kristen S. Hobbs, Miriam D. Reynaldo, Katy M. Silber, Narmadha M. Mohankumar, Nathalie A. Wright, Nikole E. Freeman
{"title":"Environmental drivers of female reproductive investment in egg quantity and quality in a grassland sparrow","authors":"Elizabeth N. Sroor,&nbsp;W. Alice Boyle,&nbsp;Henry N. Castro-Miller,&nbsp;Kristen S. Hobbs,&nbsp;Miriam D. Reynaldo,&nbsp;Katy M. Silber,&nbsp;Narmadha M. Mohankumar,&nbsp;Nathalie A. Wright,&nbsp;Nikole E. Freeman","doi":"10.1111/ibi.13379","DOIUrl":null,"url":null,"abstract":"<p>Female investment in reproduction is a critical component of life history that influences both the fitness of the female and her offspring. Oviparous females can allocate energy into egg size and/or clutch size, and this allocation can vary over lifetimes, within populations and among species. However, we know little about whether investment decisions shift within breeding seasons and the factors that influence female reproductive strategies. We studied endogenous and exogenous factors associated with variation in female reproductive investment by measuring 860 eggs from 240 clutches laid by Grasshopper Sparrows <i>Ammodramus savannarum</i> between 2014 and 2019 at the Konza Prairie Biological Station in Manhattan, Kansas, USA. As the breeding season progressed, females laid smaller clutches of heavier eggs, indicating a shift in investment towards fewer but higher quality young. Females that were heavier than expected given their body size laid heavier and larger eggs, but maternal body condition was not related to clutch size. Brood parasitism by Brown-headed Cowbirds <i>Molothrus ater</i> reduced the number of Grasshopper Sparrow eggs in nests, but was unrelated to host egg size or the total number of eggs that a female incubated, implying that sparrows do not adjust investment in response to parasitism risk. Pre-laying ambient temperature and precipitation were not associated with egg size, yet females tended to lay more eggs under rainier conditions. Overall, we provide evidence that both endogenous and exogenous factors shape female reproductive investment. Understanding the flexibility of reproductive strategies in response to multiple sources of selection, and how this mediates key trade-offs that influence demographic rates, can be used in forecasting population growth of bird species affected by anthropogenic changes to breeding areas.</p>","PeriodicalId":13254,"journal":{"name":"Ibis","volume":"167 2","pages":"437-451"},"PeriodicalIF":1.8000,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ibi.13379","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ibis","FirstCategoryId":"99","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/ibi.13379","RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ORNITHOLOGY","Score":null,"Total":0}
引用次数: 0

Abstract

Female investment in reproduction is a critical component of life history that influences both the fitness of the female and her offspring. Oviparous females can allocate energy into egg size and/or clutch size, and this allocation can vary over lifetimes, within populations and among species. However, we know little about whether investment decisions shift within breeding seasons and the factors that influence female reproductive strategies. We studied endogenous and exogenous factors associated with variation in female reproductive investment by measuring 860 eggs from 240 clutches laid by Grasshopper Sparrows Ammodramus savannarum between 2014 and 2019 at the Konza Prairie Biological Station in Manhattan, Kansas, USA. As the breeding season progressed, females laid smaller clutches of heavier eggs, indicating a shift in investment towards fewer but higher quality young. Females that were heavier than expected given their body size laid heavier and larger eggs, but maternal body condition was not related to clutch size. Brood parasitism by Brown-headed Cowbirds Molothrus ater reduced the number of Grasshopper Sparrow eggs in nests, but was unrelated to host egg size or the total number of eggs that a female incubated, implying that sparrows do not adjust investment in response to parasitism risk. Pre-laying ambient temperature and precipitation were not associated with egg size, yet females tended to lay more eggs under rainier conditions. Overall, we provide evidence that both endogenous and exogenous factors shape female reproductive investment. Understanding the flexibility of reproductive strategies in response to multiple sources of selection, and how this mediates key trade-offs that influence demographic rates, can be used in forecasting population growth of bird species affected by anthropogenic changes to breeding areas.

Abstract Image

查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
求助全文
约1分钟内获得全文 去求助
相关文献
The effect of diet quality and wing morph on male and female reproductive investment in a nuptial feeding ground cricket.
IF 3.7 3区 综合性期刊PLoS ONEPub Date : 2008-01-01 DOI: 10.1371/journal.pone.0003437
Matthew D Hall, Luc F Bussière, Robert Brooks
来源期刊
Ibis
Ibis 生物-鸟类学
CiteScore
4.60
自引率
9.50%
发文量
118
审稿时长
6-12 weeks
期刊介绍: IBIS publishes original papers, reviews, short communications and forum articles reflecting the forefront of international research activity in ornithological science, with special emphasis on the behaviour, ecology, evolution and conservation of birds. IBIS aims to publish as rapidly as is consistent with the requirements of peer-review and normal publishing constraints.
期刊最新文献
Issue Information Book Reviews Ecological drivers of variation in the extent of the post-fledging dependence period in the largest group of diurnal raptors Stable isotope evidence for suspended moult and age-related differences in moult location in the trans-Saharan migratory Alpine Swift Dynamic changes in the avian gut microbiome in response to diverse lifestyles
×
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
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 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 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1