The magnitude of selection on growth varies among years and increases under warming conditions in a subarctic seabird
Abstract Because of ongoing rapid climate change, many ecosystems are becoming both warmer and more variable, and these changes are likely to alter the magnitude and variability of natural selection acting on wild populations. Critically, changes and fluctuations in selection can impact both populat...
Published in: | Evolution Letters |
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Online Access: | http://dx.doi.org/10.1093/evlett/qrad001 https://academic.oup.com/evlett/article-pdf/8/1/56/56675534/qrad001.pdf |
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croxfordunivpr:10.1093/evlett/qrad001 2024-03-17T09:00:01+00:00 The magnitude of selection on growth varies among years and increases under warming conditions in a subarctic seabird Sauve, Drew Charmantier, Anne Hatch, Scott A Friesen, Vicki L 2023 http://dx.doi.org/10.1093/evlett/qrad001 https://academic.oup.com/evlett/article-pdf/8/1/56/56675534/qrad001.pdf en eng Oxford University Press (OUP) https://creativecommons.org/licenses/by/4.0/ Evolution Letters volume 8, issue 1, page 56-63 ISSN 2056-3744 Genetics Ecology, Evolution, Behavior and Systematics journal-article 2023 croxfordunivpr https://doi.org/10.1093/evlett/qrad001 2024-02-20T00:10:58Z Abstract Because of ongoing rapid climate change, many ecosystems are becoming both warmer and more variable, and these changes are likely to alter the magnitude and variability of natural selection acting on wild populations. Critically, changes and fluctuations in selection can impact both population demography and evolutionary change. Therefore, predicting the impacts of climate change depends on understanding the magnitude and variation in selection on traits across different life stages and environments. Long-term experiments in wild settings are a great opportunity to determine the impact of environmental conditions on selection. Here we examined variability in the strength of selection on size traits of nestling black-legged kittiwakes (Rissa tridactyla) in a 25-year study including a food supplementation experiment on Middleton Island in the Gulf of Alaska. Using mixed effect models, we examined the annual variability of stage-specific and resource-specific selection gradients across 25 years. We found that (a) larger and heavier hatchlings were the most likely to survive during early ontogeny, (b) non-food supplemented younger nestlings in a brood experienced the strongest selection, and (c) warmer conditions increased the magnitude of selection on nestling mass and affected non-food supplemented and second-hatched nestlings the most. Our results suggested that variable resource dynamics likely caused some of the changes in selection from year to year and that warming conditions increased the strength of selection on subarctic seabird growth. However, our experimental manipulation revealed that local environmental heterogeneity could buffer the selection expected from broader climatic changes. Consequently, understanding the interactive effects of local conditions and general changes in climate seems likely to improve our ability to predict future selection gradients. Article in Journal/Newspaper rissa tridactyla Subarctic Alaska Oxford University Press Gulf of Alaska Evolution Letters |
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Open Polar |
collection |
Oxford University Press |
op_collection_id |
croxfordunivpr |
language |
English |
topic |
Genetics Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Genetics Ecology, Evolution, Behavior and Systematics Sauve, Drew Charmantier, Anne Hatch, Scott A Friesen, Vicki L The magnitude of selection on growth varies among years and increases under warming conditions in a subarctic seabird |
topic_facet |
Genetics Ecology, Evolution, Behavior and Systematics |
description |
Abstract Because of ongoing rapid climate change, many ecosystems are becoming both warmer and more variable, and these changes are likely to alter the magnitude and variability of natural selection acting on wild populations. Critically, changes and fluctuations in selection can impact both population demography and evolutionary change. Therefore, predicting the impacts of climate change depends on understanding the magnitude and variation in selection on traits across different life stages and environments. Long-term experiments in wild settings are a great opportunity to determine the impact of environmental conditions on selection. Here we examined variability in the strength of selection on size traits of nestling black-legged kittiwakes (Rissa tridactyla) in a 25-year study including a food supplementation experiment on Middleton Island in the Gulf of Alaska. Using mixed effect models, we examined the annual variability of stage-specific and resource-specific selection gradients across 25 years. We found that (a) larger and heavier hatchlings were the most likely to survive during early ontogeny, (b) non-food supplemented younger nestlings in a brood experienced the strongest selection, and (c) warmer conditions increased the magnitude of selection on nestling mass and affected non-food supplemented and second-hatched nestlings the most. Our results suggested that variable resource dynamics likely caused some of the changes in selection from year to year and that warming conditions increased the strength of selection on subarctic seabird growth. However, our experimental manipulation revealed that local environmental heterogeneity could buffer the selection expected from broader climatic changes. Consequently, understanding the interactive effects of local conditions and general changes in climate seems likely to improve our ability to predict future selection gradients. |
format |
Article in Journal/Newspaper |
author |
Sauve, Drew Charmantier, Anne Hatch, Scott A Friesen, Vicki L |
author_facet |
Sauve, Drew Charmantier, Anne Hatch, Scott A Friesen, Vicki L |
author_sort |
Sauve, Drew |
title |
The magnitude of selection on growth varies among years and increases under warming conditions in a subarctic seabird |
title_short |
The magnitude of selection on growth varies among years and increases under warming conditions in a subarctic seabird |
title_full |
The magnitude of selection on growth varies among years and increases under warming conditions in a subarctic seabird |
title_fullStr |
The magnitude of selection on growth varies among years and increases under warming conditions in a subarctic seabird |
title_full_unstemmed |
The magnitude of selection on growth varies among years and increases under warming conditions in a subarctic seabird |
title_sort |
magnitude of selection on growth varies among years and increases under warming conditions in a subarctic seabird |
publisher |
Oxford University Press (OUP) |
publishDate |
2023 |
url |
http://dx.doi.org/10.1093/evlett/qrad001 https://academic.oup.com/evlett/article-pdf/8/1/56/56675534/qrad001.pdf |
geographic |
Gulf of Alaska |
geographic_facet |
Gulf of Alaska |
genre |
rissa tridactyla Subarctic Alaska |
genre_facet |
rissa tridactyla Subarctic Alaska |
op_source |
Evolution Letters volume 8, issue 1, page 56-63 ISSN 2056-3744 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1093/evlett/qrad001 |
container_title |
Evolution Letters |
_version_ |
1793771102553505792 |