Conditions during adulthood affect cohort-specific reproductive success in an Arctic-nesting goose population
Variation in fitness between individuals in populations may be attributed to differing environmental conditions experienced among birth (or hatch) years (i.e., between cohorts). In this study, we tested whether cohort fitness could also be explained by environmental conditions experienced in years p...
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ftdoajarticles:oai:doaj.org/article:5cdafc7f0493403c8c73a43f61326d99 2024-01-07T09:42:00+01:00 Conditions during adulthood affect cohort-specific reproductive success in an Arctic-nesting goose population Mitch D. Weegman Stuart Bearhop Geoff M. Hilton Alyn Walsh Anthony David Fox 2016-05-01T00:00:00Z https://doi.org/10.7717/peerj.2044 https://doaj.org/article/5cdafc7f0493403c8c73a43f61326d99 EN eng PeerJ Inc. https://peerj.com/articles/2044.pdf https://peerj.com/articles/2044/ https://doaj.org/toc/2167-8359 doi:10.7717/peerj.2044 2167-8359 https://doaj.org/article/5cdafc7f0493403c8c73a43f61326d99 PeerJ, Vol 4, p e2044 (2016) Cohort fitness Environmental stochasticity Greenland white-fronted geese North Atlantic Oscillation Age at first successful reproduction Medicine R Biology (General) QH301-705.5 article 2016 ftdoajarticles https://doi.org/10.7717/peerj.2044 2023-12-10T01:50:54Z Variation in fitness between individuals in populations may be attributed to differing environmental conditions experienced among birth (or hatch) years (i.e., between cohorts). In this study, we tested whether cohort fitness could also be explained by environmental conditions experienced in years post-hatch, using 736 lifelong resighting histories of Greenland white-fronted geese (Anser albifrons flavirostris) marked in their first winter. Specifically, we tested whether variation in age at first successful reproduction, the size of the first successful brood and the proportion of successful breeders by cohort was explained by environmental conditions experienced on breeding areas in west Greenland during hatch year, those in adulthood prior to successful reproduction and those in the year of successful reproduction, using North Atlantic Oscillation indices as proxies for environmental conditions during these periods. Fifty-nine (8%) of all marked birds reproduced successfully (i.e., were observed on wintering areas with young) only once in their lifetime and 15 (2%) reproduced successfully twice or thrice. Variation in age at first successful reproduction was explained by the environmental conditions experienced during adulthood in the years prior to successful reproduction. Birds bred earliest (mean age 4) when environmental conditions were ‘good’ prior to the year of successful reproduction. Conversely, birds successfully reproduced at older ages (mean age 7) if they experienced adverse conditions prior to the year of successful reproduction. Hatch year conditions and an interaction between those experienced prior to and during the year of successful reproduction explained less (marginally significant) variation in age at first successful reproduction. Environmental conditions did not explain variation in the size of the first successful brood or the proportion of successful breeders. These findings show that conditions during adulthood prior to the year of successful reproduction are most important in ... Article in Journal/Newspaper Arctic Greenland North Atlantic North Atlantic oscillation Directory of Open Access Journals: DOAJ Articles Arctic Greenland PeerJ 4 e2044 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Cohort fitness Environmental stochasticity Greenland white-fronted geese North Atlantic Oscillation Age at first successful reproduction Medicine R Biology (General) QH301-705.5 |
spellingShingle |
Cohort fitness Environmental stochasticity Greenland white-fronted geese North Atlantic Oscillation Age at first successful reproduction Medicine R Biology (General) QH301-705.5 Mitch D. Weegman Stuart Bearhop Geoff M. Hilton Alyn Walsh Anthony David Fox Conditions during adulthood affect cohort-specific reproductive success in an Arctic-nesting goose population |
topic_facet |
Cohort fitness Environmental stochasticity Greenland white-fronted geese North Atlantic Oscillation Age at first successful reproduction Medicine R Biology (General) QH301-705.5 |
description |
Variation in fitness between individuals in populations may be attributed to differing environmental conditions experienced among birth (or hatch) years (i.e., between cohorts). In this study, we tested whether cohort fitness could also be explained by environmental conditions experienced in years post-hatch, using 736 lifelong resighting histories of Greenland white-fronted geese (Anser albifrons flavirostris) marked in their first winter. Specifically, we tested whether variation in age at first successful reproduction, the size of the first successful brood and the proportion of successful breeders by cohort was explained by environmental conditions experienced on breeding areas in west Greenland during hatch year, those in adulthood prior to successful reproduction and those in the year of successful reproduction, using North Atlantic Oscillation indices as proxies for environmental conditions during these periods. Fifty-nine (8%) of all marked birds reproduced successfully (i.e., were observed on wintering areas with young) only once in their lifetime and 15 (2%) reproduced successfully twice or thrice. Variation in age at first successful reproduction was explained by the environmental conditions experienced during adulthood in the years prior to successful reproduction. Birds bred earliest (mean age 4) when environmental conditions were ‘good’ prior to the year of successful reproduction. Conversely, birds successfully reproduced at older ages (mean age 7) if they experienced adverse conditions prior to the year of successful reproduction. Hatch year conditions and an interaction between those experienced prior to and during the year of successful reproduction explained less (marginally significant) variation in age at first successful reproduction. Environmental conditions did not explain variation in the size of the first successful brood or the proportion of successful breeders. These findings show that conditions during adulthood prior to the year of successful reproduction are most important in ... |
format |
Article in Journal/Newspaper |
author |
Mitch D. Weegman Stuart Bearhop Geoff M. Hilton Alyn Walsh Anthony David Fox |
author_facet |
Mitch D. Weegman Stuart Bearhop Geoff M. Hilton Alyn Walsh Anthony David Fox |
author_sort |
Mitch D. Weegman |
title |
Conditions during adulthood affect cohort-specific reproductive success in an Arctic-nesting goose population |
title_short |
Conditions during adulthood affect cohort-specific reproductive success in an Arctic-nesting goose population |
title_full |
Conditions during adulthood affect cohort-specific reproductive success in an Arctic-nesting goose population |
title_fullStr |
Conditions during adulthood affect cohort-specific reproductive success in an Arctic-nesting goose population |
title_full_unstemmed |
Conditions during adulthood affect cohort-specific reproductive success in an Arctic-nesting goose population |
title_sort |
conditions during adulthood affect cohort-specific reproductive success in an arctic-nesting goose population |
publisher |
PeerJ Inc. |
publishDate |
2016 |
url |
https://doi.org/10.7717/peerj.2044 https://doaj.org/article/5cdafc7f0493403c8c73a43f61326d99 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Greenland North Atlantic North Atlantic oscillation |
genre_facet |
Arctic Greenland North Atlantic North Atlantic oscillation |
op_source |
PeerJ, Vol 4, p e2044 (2016) |
op_relation |
https://peerj.com/articles/2044.pdf https://peerj.com/articles/2044/ https://doaj.org/toc/2167-8359 doi:10.7717/peerj.2044 2167-8359 https://doaj.org/article/5cdafc7f0493403c8c73a43f61326d99 |
op_doi |
https://doi.org/10.7717/peerj.2044 |
container_title |
PeerJ |
container_volume |
4 |
container_start_page |
e2044 |
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1787422837063024640 |