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...
Published in: | Ecology and Evolution |
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2022
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Online Access: | https://pure.uhi.ac.uk/en/publications/6793abb1-9ada-4cb5-bfb1-9c285ebe3a11 https://doi.org/10.1002/ece3.9427 http://www.scopus.com/inward/record.url?scp=85141165433&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=85141165433&partnerID=8YFLogxK |
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ftuhipublicatio:oai:pure.atira.dk:publications/6793abb1-9ada-4cb5-bfb1-9c285ebe3a11 2024-04-28T08:04:10+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. 2022-10-18 https://pure.uhi.ac.uk/en/publications/6793abb1-9ada-4cb5-bfb1-9c285ebe3a11 https://doi.org/10.1002/ece3.9427 http://www.scopus.com/inward/record.url?scp=85141165433&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=85141165433&partnerID=8YFLogxK eng eng info:eu-repo/semantics/openAccess 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 , vol. 12 , no. 10 , e9427 . https://doi.org/10.1002/ece3.9427 developmental plasticity diversification egg size freshwater maternal effects resource polymorphism article 2022 ftuhipublicatio https://doi.org/10.1002/ece3.9427 2024-04-04T17:16:03Z 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. Article in Journal/Newspaper Arctic Arctic charr Arctic University of the Highlands and Islands: Research Database of UHI Ecology and Evolution 12 10 |
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Open Polar |
collection |
University of the Highlands and Islands: Research Database of UHI |
op_collection_id |
ftuhipublicatio |
language |
English |
topic |
developmental plasticity diversification egg size freshwater maternal effects resource polymorphism |
spellingShingle |
developmental plasticity diversification egg size freshwater maternal effects resource polymorphism 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 |
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. |
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 |
publishDate |
2022 |
url |
https://pure.uhi.ac.uk/en/publications/6793abb1-9ada-4cb5-bfb1-9c285ebe3a11 https://doi.org/10.1002/ece3.9427 http://www.scopus.com/inward/record.url?scp=85141165433&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=85141165433&partnerID=8YFLogxK |
genre |
Arctic Arctic charr Arctic |
genre_facet |
Arctic Arctic charr Arctic |
op_source |
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 , vol. 12 , no. 10 , e9427 . https://doi.org/10.1002/ece3.9427 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/ece3.9427 |
container_title |
Ecology and Evolution |
container_volume |
12 |
container_issue |
10 |
_version_ |
1797575002865795072 |