Individual heterogeneity in fitness in a long‐lived herbivore
Abstract Heterogeneity in the intrinsic quality and nutritional condition of individuals affects reproductive success and consequently fitness. Black brant (Branta bernicla nigricans) are long‐lived, migratory, specialist herbivores. Long migratory pathways and short summer breeding seasons constrai...
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ftdoajarticles:oai:doaj.org/article:9a824a4a5a4d4b43ad67c1103e128f8a 2023-05-15T15:46:08+02:00 Individual heterogeneity in fitness in a long‐lived herbivore Madeleine G. Lohman Thomas V. Riecke Perry J. Williams James S. Sedinger 2021-11-01T00:00:00Z https://doi.org/10.1002/ece3.8197 https://doaj.org/article/9a824a4a5a4d4b43ad67c1103e128f8a EN eng Wiley https://doi.org/10.1002/ece3.8197 https://doaj.org/toc/2045-7758 2045-7758 doi:10.1002/ece3.8197 https://doaj.org/article/9a824a4a5a4d4b43ad67c1103e128f8a Ecology and Evolution, Vol 11, Iss 21, Pp 15164-15173 (2021) black brant breeding probability fitness life‐history reproduction survival Ecology QH540-549.5 article 2021 ftdoajarticles https://doi.org/10.1002/ece3.8197 2022-12-31T11:25:28Z Abstract Heterogeneity in the intrinsic quality and nutritional condition of individuals affects reproductive success and consequently fitness. Black brant (Branta bernicla nigricans) are long‐lived, migratory, specialist herbivores. Long migratory pathways and short summer breeding seasons constrain the time and energy available for reproduction, thus magnifying life‐history trade‐offs. These constraints, combined with long lifespans and trade‐offs between current and future reproductive value, provide a model system to examine the role of individual heterogeneity in driving life‐history strategies and individual heterogeneity in fitness. We used hierarchical Bayesian models to examine reproductive trade‐offs, modeling the relationships between within‐year measures of reproductive energy allocation and among‐year demographic rates of individual females breeding on the Yukon‐Kuskokwim Delta, Alaska, using capture–recapture and reproductive data from 1988 to 2014. We generally found that annual survival tended to be buffered against variation in reproductive investment, while breeding probability varied considerably over the range of clutch size‐laying date combinations. We provide evidence for relationships between breeding probability and clutch size, breeding probability and nest initiation date, and an interaction between clutch size and initiation date. Average lifetime clutch size also had a weak positive relationship with apparent survival probability. Our results support the use of demographic buffering strategies for black brant. These results also indirectly suggest associations among environmental conditions during growth, fitness, and energy allocation, highlighting the effects of early growth conditions on individual heterogeneity, and subsequently, lifetime reproductive investment. Article in Journal/Newspaper Branta bernicla Kuskokwim Alaska Yukon Directory of Open Access Journals: DOAJ Articles Brant ENVELOPE(7.105,7.105,62.917,62.917) Yukon Ecology and Evolution 11 21 15164 15173 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
black brant breeding probability fitness life‐history reproduction survival Ecology QH540-549.5 |
spellingShingle |
black brant breeding probability fitness life‐history reproduction survival Ecology QH540-549.5 Madeleine G. Lohman Thomas V. Riecke Perry J. Williams James S. Sedinger Individual heterogeneity in fitness in a long‐lived herbivore |
topic_facet |
black brant breeding probability fitness life‐history reproduction survival Ecology QH540-549.5 |
description |
Abstract Heterogeneity in the intrinsic quality and nutritional condition of individuals affects reproductive success and consequently fitness. Black brant (Branta bernicla nigricans) are long‐lived, migratory, specialist herbivores. Long migratory pathways and short summer breeding seasons constrain the time and energy available for reproduction, thus magnifying life‐history trade‐offs. These constraints, combined with long lifespans and trade‐offs between current and future reproductive value, provide a model system to examine the role of individual heterogeneity in driving life‐history strategies and individual heterogeneity in fitness. We used hierarchical Bayesian models to examine reproductive trade‐offs, modeling the relationships between within‐year measures of reproductive energy allocation and among‐year demographic rates of individual females breeding on the Yukon‐Kuskokwim Delta, Alaska, using capture–recapture and reproductive data from 1988 to 2014. We generally found that annual survival tended to be buffered against variation in reproductive investment, while breeding probability varied considerably over the range of clutch size‐laying date combinations. We provide evidence for relationships between breeding probability and clutch size, breeding probability and nest initiation date, and an interaction between clutch size and initiation date. Average lifetime clutch size also had a weak positive relationship with apparent survival probability. Our results support the use of demographic buffering strategies for black brant. These results also indirectly suggest associations among environmental conditions during growth, fitness, and energy allocation, highlighting the effects of early growth conditions on individual heterogeneity, and subsequently, lifetime reproductive investment. |
format |
Article in Journal/Newspaper |
author |
Madeleine G. Lohman Thomas V. Riecke Perry J. Williams James S. Sedinger |
author_facet |
Madeleine G. Lohman Thomas V. Riecke Perry J. Williams James S. Sedinger |
author_sort |
Madeleine G. Lohman |
title |
Individual heterogeneity in fitness in a long‐lived herbivore |
title_short |
Individual heterogeneity in fitness in a long‐lived herbivore |
title_full |
Individual heterogeneity in fitness in a long‐lived herbivore |
title_fullStr |
Individual heterogeneity in fitness in a long‐lived herbivore |
title_full_unstemmed |
Individual heterogeneity in fitness in a long‐lived herbivore |
title_sort |
individual heterogeneity in fitness in a long‐lived herbivore |
publisher |
Wiley |
publishDate |
2021 |
url |
https://doi.org/10.1002/ece3.8197 https://doaj.org/article/9a824a4a5a4d4b43ad67c1103e128f8a |
long_lat |
ENVELOPE(7.105,7.105,62.917,62.917) |
geographic |
Brant Yukon |
geographic_facet |
Brant Yukon |
genre |
Branta bernicla Kuskokwim Alaska Yukon |
genre_facet |
Branta bernicla Kuskokwim Alaska Yukon |
op_source |
Ecology and Evolution, Vol 11, Iss 21, Pp 15164-15173 (2021) |
op_relation |
https://doi.org/10.1002/ece3.8197 https://doaj.org/toc/2045-7758 2045-7758 doi:10.1002/ece3.8197 https://doaj.org/article/9a824a4a5a4d4b43ad67c1103e128f8a |
op_doi |
https://doi.org/10.1002/ece3.8197 |
container_title |
Ecology and Evolution |
container_volume |
11 |
container_issue |
21 |
container_start_page |
15164 |
op_container_end_page |
15173 |
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1766380816907108352 |