Data from: Environmental quality predicts optimal egg size in the wild
Parents can maximize their reproductive success by balancing the trade-off between investment per offspring and fecundity. According to theory, environmental quality influences the relationship between investment per offspring and offspring fitness, such that well-provisioned offspring fare better w...
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ftdryad:oai:v1.datadryad.org:10255/dryad.46817 2023-05-15T15:32:37+02:00 Data from: Environmental quality predicts optimal egg size in the wild Rollinson, Njal Hutchings, Jeffrey A. Stewiacke River Economy River Great Village River Nova Scotia 45.37 N -63.27 W 2009 2013-02-21T15:49:19Z http://hdl.handle.net/10255/dryad.46817 https://doi.org/10.5061/dryad.0q13g unknown doi:10.5061/dryad.0q13g/1 doi:10.5061/dryad.0q13g/2 doi:10.5061/dryad.0q13g/3 doi:10.5061/dryad.0q13g/4 doi:10.5061/dryad.0q13g/5 doi:10.1086/670648 PMID:23778228 doi:10.5061/dryad.0q13g Rollinson N, Hutchings JA (2013) Environmental quality predicts optimal egg size in the wild. The American Naturalist 182(1): 76-90. http://hdl.handle.net/10255/dryad.46817 Fitness Life history: theory Life history: trade offs Maternal effects Reproduction: investment Resource allocation Article 2013 ftdryad https://doi.org/10.5061/dryad.0q13g https://doi.org/10.5061/dryad.0q13g/1 https://doi.org/10.5061/dryad.0q13g/2 https://doi.org/10.5061/dryad.0q13g/3 https://doi.org/10.5061/dryad.0q13g/4 https://doi.org/10.5061/dryad.0q13g/5 https://doi.org/1 2020-01-01T15:00:03Z Parents can maximize their reproductive success by balancing the trade-off between investment per offspring and fecundity. According to theory, environmental quality influences the relationship between investment per offspring and offspring fitness, such that well-provisioned offspring fare better when environmental quality is lower. A major prediction of classic theory, then, is that optimal investment per offspring will increase as environmental quality decreases. To test this prediction, we release over 30,000 juvenile Atlantic salmon (Salmo salar) into eight wild stream environments, and we monitor subsequent growth and survival of juveniles. We estimate the shape of the relationship between investment per offspring (egg size) and offspring fitness in each stream. We find that optimal egg size is greater when the quality of the stream environment is lower (as estimated by a composite index of habitat quality). Across streams, the mean size of stream gravel and the mean amount of incident sunlight are the most important individual predictors of optimal egg size. Within streams, juveniles recaptured in stream subsections that featured larger gravels and greater levels of sunlight also grew relatively quickly, an association that complements our cross-stream analyses. This study provides the first empirical verification that environmental quality alters the relationship between investment per offspring and offspring fitness, such that optimal investment per offspring increases as environmental quality decreases. Article in Journal/Newspaper Atlantic salmon Salmo salar Dryad Digital Repository (Duke University) |
institution |
Open Polar |
collection |
Dryad Digital Repository (Duke University) |
op_collection_id |
ftdryad |
language |
unknown |
topic |
Fitness Life history: theory Life history: trade offs Maternal effects Reproduction: investment Resource allocation |
spellingShingle |
Fitness Life history: theory Life history: trade offs Maternal effects Reproduction: investment Resource allocation Rollinson, Njal Hutchings, Jeffrey A. Data from: Environmental quality predicts optimal egg size in the wild |
topic_facet |
Fitness Life history: theory Life history: trade offs Maternal effects Reproduction: investment Resource allocation |
description |
Parents can maximize their reproductive success by balancing the trade-off between investment per offspring and fecundity. According to theory, environmental quality influences the relationship between investment per offspring and offspring fitness, such that well-provisioned offspring fare better when environmental quality is lower. A major prediction of classic theory, then, is that optimal investment per offspring will increase as environmental quality decreases. To test this prediction, we release over 30,000 juvenile Atlantic salmon (Salmo salar) into eight wild stream environments, and we monitor subsequent growth and survival of juveniles. We estimate the shape of the relationship between investment per offspring (egg size) and offspring fitness in each stream. We find that optimal egg size is greater when the quality of the stream environment is lower (as estimated by a composite index of habitat quality). Across streams, the mean size of stream gravel and the mean amount of incident sunlight are the most important individual predictors of optimal egg size. Within streams, juveniles recaptured in stream subsections that featured larger gravels and greater levels of sunlight also grew relatively quickly, an association that complements our cross-stream analyses. This study provides the first empirical verification that environmental quality alters the relationship between investment per offspring and offspring fitness, such that optimal investment per offspring increases as environmental quality decreases. |
format |
Article in Journal/Newspaper |
author |
Rollinson, Njal Hutchings, Jeffrey A. |
author_facet |
Rollinson, Njal Hutchings, Jeffrey A. |
author_sort |
Rollinson, Njal |
title |
Data from: Environmental quality predicts optimal egg size in the wild |
title_short |
Data from: Environmental quality predicts optimal egg size in the wild |
title_full |
Data from: Environmental quality predicts optimal egg size in the wild |
title_fullStr |
Data from: Environmental quality predicts optimal egg size in the wild |
title_full_unstemmed |
Data from: Environmental quality predicts optimal egg size in the wild |
title_sort |
data from: environmental quality predicts optimal egg size in the wild |
publishDate |
2013 |
url |
http://hdl.handle.net/10255/dryad.46817 https://doi.org/10.5061/dryad.0q13g |
op_coverage |
Stewiacke River Economy River Great Village River Nova Scotia 45.37 N -63.27 W 2009 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_relation |
doi:10.5061/dryad.0q13g/1 doi:10.5061/dryad.0q13g/2 doi:10.5061/dryad.0q13g/3 doi:10.5061/dryad.0q13g/4 doi:10.5061/dryad.0q13g/5 doi:10.1086/670648 PMID:23778228 doi:10.5061/dryad.0q13g Rollinson N, Hutchings JA (2013) Environmental quality predicts optimal egg size in the wild. The American Naturalist 182(1): 76-90. http://hdl.handle.net/10255/dryad.46817 |
op_doi |
https://doi.org/10.5061/dryad.0q13g https://doi.org/10.5061/dryad.0q13g/1 https://doi.org/10.5061/dryad.0q13g/2 https://doi.org/10.5061/dryad.0q13g/3 https://doi.org/10.5061/dryad.0q13g/4 https://doi.org/10.5061/dryad.0q13g/5 https://doi.org/1 |
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1766363109509824512 |