Variation in egg size and offspring phenotype among and within seven Arctic charr morphs
Maternal effects have the potential to alter early developmental processes of offspring and contribute to adaptive diversification. Egg size is a major contributor to offspring phenotype, which can influence developmental trajectories and potential resource use. However, to what extent intraspecific...
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ftjyvaeskylaenun:oai:jyx.jyu.fi:123456789/83647 2024-05-19T07:33:18+00:00 Variation in egg size and offspring phenotype among and within seven Arctic charr morphs Beck, Samantha V. Räsänen, Katja Kristjánsson, Bjarni K. Skúlason, Skúli Jónsson, Zophonías O. Tsinganis, Markos Leblanc, Camille A. 2022 application/pdf fulltext http://urn.fi/URN:NBN:fi:jyu-202210244958 eng eng Wiley Ecology and Evolution 2045-7758 10 12 https://doi.org/10.5061/dryad.jh9w0vtfg 10.1002/ece3.9427 Beck, S. V., Räsänen, K., Kristjánsson, B. K., Skúlason, S., Jónsson, Z. O., Tsinganis, M., & Leblanc, C. A. (2022). Variation in egg size and offspring phenotype among and within seven Arctic charr morphs. Ecology and Evolution , 12 (10), Article e9427. https://doi.org/10.1002/ece3.9427 CONVID_159234970 URN:NBN:fi:jyu-202210244958 http://urn.fi/URN:NBN:fi:jyu-202210244958 CC BY 4.0 © 2022 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. openAccess https://creativecommons.org/licenses/by/4.0/ developmental plasticity diversification egg size freshwater maternal effects resource polymorphism fenotyyppi munat emot jälkeläiset evoluutiobiologia muuntelu (biologia) nieriä article http://purl.org/eprint/type/JournalArticle http://purl.org/coar/resource_type/c_2df8fbb1 publishedVersion A1 2022 ftjyvaeskylaenun https://doi.org/10.5061/dryad.jh9w0vtfg 2024-04-23T23:38:28Z Maternal effects have the potential to alter early developmental processes of offspring and contribute to adaptive diversification. Egg size is a major contributor to offspring phenotype, which can influence developmental trajectories and potential resource use. However, to what extent intraspecific variation in egg size facilitates evolution of resource polymorphism is poorly understood. We studied multiple resource morphs of Icelandic Arctic charr, ranging from an anadromous morph—with a phenotype similar to the proposed ancestral phenotype—to sympatric morphs that vary in their degree of phenotypic divergence from the ancestral anadromous morph. We characterized variation in egg size and tested whether egg size influenced offspring phenotype at early life stages (i.e., timing of- and size at- hatching and first feeding [FF]). We predicted that egg size would differ among morphs and be less variable as morphs diverge away from the ancestral anadromous phenotype. We also predicted that egg size would correlate with offspring size and developmental timing. We found morphs had different egg size, developmental timing, and size at hatching and FF. Egg size increased as phenotypic proximity to the ancestral anadromous phenotype decreased, with larger eggs generally giving rise to larger offspring, especially at FF, but egg size had no effect on developmental rate. The interaction between egg size and the environment may have a profound impact on offspring fitness, where the resulting differences in early life-history traits may act to initiate and/or maintain resource morphs diversification. peerReviewed Article in Journal/Newspaper Arctic Arctic charr Arctic JYX - Jyväskylä University Digital Archive |
institution |
Open Polar |
collection |
JYX - Jyväskylä University Digital Archive |
op_collection_id |
ftjyvaeskylaenun |
language |
English |
topic |
developmental plasticity diversification egg size freshwater maternal effects resource polymorphism fenotyyppi munat emot jälkeläiset evoluutiobiologia muuntelu (biologia) nieriä |
spellingShingle |
developmental plasticity diversification egg size freshwater maternal effects resource polymorphism fenotyyppi munat emot jälkeläiset evoluutiobiologia muuntelu (biologia) nieriä Beck, Samantha V. Räsänen, Katja Kristjánsson, Bjarni K. Skúlason, Skúli Jónsson, Zophonías O. Tsinganis, Markos Leblanc, Camille A. Variation in egg size and offspring phenotype among and within seven Arctic charr morphs |
topic_facet |
developmental plasticity diversification egg size freshwater maternal effects resource polymorphism fenotyyppi munat emot jälkeläiset evoluutiobiologia muuntelu (biologia) nieriä |
description |
Maternal effects have the potential to alter early developmental processes of offspring and contribute to adaptive diversification. Egg size is a major contributor to offspring phenotype, which can influence developmental trajectories and potential resource use. However, to what extent intraspecific variation in egg size facilitates evolution of resource polymorphism is poorly understood. We studied multiple resource morphs of Icelandic Arctic charr, ranging from an anadromous morph—with a phenotype similar to the proposed ancestral phenotype—to sympatric morphs that vary in their degree of phenotypic divergence from the ancestral anadromous morph. We characterized variation in egg size and tested whether egg size influenced offspring phenotype at early life stages (i.e., timing of- and size at- hatching and first feeding [FF]). We predicted that egg size would differ among morphs and be less variable as morphs diverge away from the ancestral anadromous phenotype. We also predicted that egg size would correlate with offspring size and developmental timing. We found morphs had different egg size, developmental timing, and size at hatching and FF. Egg size increased as phenotypic proximity to the ancestral anadromous phenotype decreased, with larger eggs generally giving rise to larger offspring, especially at FF, but egg size had no effect on developmental rate. The interaction between egg size and the environment may have a profound impact on offspring fitness, where the resulting differences in early life-history traits may act to initiate and/or maintain resource morphs diversification. peerReviewed |
format |
Article in Journal/Newspaper |
author |
Beck, Samantha V. Räsänen, Katja Kristjánsson, Bjarni K. Skúlason, Skúli Jónsson, Zophonías O. Tsinganis, Markos Leblanc, Camille A. |
author_facet |
Beck, Samantha V. Räsänen, Katja Kristjánsson, Bjarni K. Skúlason, Skúli Jónsson, Zophonías O. Tsinganis, Markos Leblanc, Camille A. |
author_sort |
Beck, Samantha V. |
title |
Variation in egg size and offspring phenotype among and within seven Arctic charr morphs |
title_short |
Variation in egg size and offspring phenotype among and within seven Arctic charr morphs |
title_full |
Variation in egg size and offspring phenotype among and within seven Arctic charr morphs |
title_fullStr |
Variation in egg size and offspring phenotype among and within seven Arctic charr morphs |
title_full_unstemmed |
Variation in egg size and offspring phenotype among and within seven Arctic charr morphs |
title_sort |
variation in egg size and offspring phenotype among and within seven arctic charr morphs |
publisher |
Wiley |
publishDate |
2022 |
url |
http://urn.fi/URN:NBN:fi:jyu-202210244958 |
genre |
Arctic Arctic charr Arctic |
genre_facet |
Arctic Arctic charr Arctic |
op_relation |
Ecology and Evolution 2045-7758 10 12 https://doi.org/10.5061/dryad.jh9w0vtfg 10.1002/ece3.9427 Beck, S. V., Räsänen, K., Kristjánsson, B. K., Skúlason, S., Jónsson, Z. O., Tsinganis, M., & Leblanc, C. A. (2022). Variation in egg size and offspring phenotype among and within seven Arctic charr morphs. Ecology and Evolution , 12 (10), Article e9427. https://doi.org/10.1002/ece3.9427 CONVID_159234970 URN:NBN:fi:jyu-202210244958 http://urn.fi/URN:NBN:fi:jyu-202210244958 |
op_rights |
CC BY 4.0 © 2022 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. openAccess https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.5061/dryad.jh9w0vtfg |
_version_ |
1799471381560164352 |