Differences among families in craniofacial shape at early life-stages of Arctic charr (Salvelinus alpinus)
BACKGROUND: Organismal fitness can be determined at early life-stages, but phenotypic variation at early life-stages is rarely considered in studies on evolutionary diversification. The trophic apparatus has been shown to contribute to sympatric resource-mediated divergence in several taxa. However,...
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ftpubmed:oai:pubmedcentral.nih.gov:7586659 2023-05-15T14:30:06+02:00 Differences among families in craniofacial shape at early life-stages of Arctic charr (Salvelinus alpinus) Beck, Samantha V. Räsänen, Katja Leblanc, Camille A. Skúlason, Skúli Jónsson, Zophonías O. Kristjánsson, Bjarni K. 2020-10-26 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7586659/ http://www.ncbi.nlm.nih.gov/pubmed/33106153 https://doi.org/10.1186/s12861-020-00226-0 en eng BioMed Central http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7586659/ http://www.ncbi.nlm.nih.gov/pubmed/33106153 http://dx.doi.org/10.1186/s12861-020-00226-0 © The Author(s) 2020 Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data. CC0 PDM CC-BY BMC Dev Biol Research Article Text 2020 ftpubmed https://doi.org/10.1186/s12861-020-00226-0 2020-11-01T01:55:40Z BACKGROUND: Organismal fitness can be determined at early life-stages, but phenotypic variation at early life-stages is rarely considered in studies on evolutionary diversification. The trophic apparatus has been shown to contribute to sympatric resource-mediated divergence in several taxa. However, processes underlying diversification in trophic traits are poorly understood. Using phenotypically variable Icelandic Arctic charr (Salvelinus alpinus), we reared offspring from multiple families under standardized laboratory conditions and tested to what extent family (i.e. direct genetic and maternal effects) contributes to offspring morphology at hatching (H) and first feeding (FF). To understand the underlying mechanisms behind early life-stage variation in morphology, we examined how craniofacial shape varied according to family, offspring size, egg size and candidate gene expression. RESULTS: Craniofacial shape (i.e. the Meckel’s cartilage and hyoid arch) was more variable between families than within families both across and within developmental stages. Differences in craniofacial morphology between developmental stages correlated with offspring size, whilst within developmental stages only shape at FF correlated with offspring size, as well as female mean egg size. Larger offspring and offspring from females with larger eggs consistently had a wider hyoid arch and contracted Meckel’s cartilage in comparison to smaller offspring. CONCLUSIONS: This study provides evidence for family-level variation in early life-stage trophic morphology, indicating the potential for parental effects to facilitate resource polymorphism. SUPPLEMENTARY INFORMATION: Supplementary information accompanies this paper at 10.1186/s12861-020-00226-0. Text Arctic charr Arctic Salvelinus alpinus PubMed Central (PMC) Arctic BMC Developmental Biology 20 1 |
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English |
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Research Article |
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Research Article Beck, Samantha V. Räsänen, Katja Leblanc, Camille A. Skúlason, Skúli Jónsson, Zophonías O. Kristjánsson, Bjarni K. Differences among families in craniofacial shape at early life-stages of Arctic charr (Salvelinus alpinus) |
topic_facet |
Research Article |
description |
BACKGROUND: Organismal fitness can be determined at early life-stages, but phenotypic variation at early life-stages is rarely considered in studies on evolutionary diversification. The trophic apparatus has been shown to contribute to sympatric resource-mediated divergence in several taxa. However, processes underlying diversification in trophic traits are poorly understood. Using phenotypically variable Icelandic Arctic charr (Salvelinus alpinus), we reared offspring from multiple families under standardized laboratory conditions and tested to what extent family (i.e. direct genetic and maternal effects) contributes to offspring morphology at hatching (H) and first feeding (FF). To understand the underlying mechanisms behind early life-stage variation in morphology, we examined how craniofacial shape varied according to family, offspring size, egg size and candidate gene expression. RESULTS: Craniofacial shape (i.e. the Meckel’s cartilage and hyoid arch) was more variable between families than within families both across and within developmental stages. Differences in craniofacial morphology between developmental stages correlated with offspring size, whilst within developmental stages only shape at FF correlated with offspring size, as well as female mean egg size. Larger offspring and offspring from females with larger eggs consistently had a wider hyoid arch and contracted Meckel’s cartilage in comparison to smaller offspring. CONCLUSIONS: This study provides evidence for family-level variation in early life-stage trophic morphology, indicating the potential for parental effects to facilitate resource polymorphism. SUPPLEMENTARY INFORMATION: Supplementary information accompanies this paper at 10.1186/s12861-020-00226-0. |
format |
Text |
author |
Beck, Samantha V. Räsänen, Katja Leblanc, Camille A. Skúlason, Skúli Jónsson, Zophonías O. Kristjánsson, Bjarni K. |
author_facet |
Beck, Samantha V. Räsänen, Katja Leblanc, Camille A. Skúlason, Skúli Jónsson, Zophonías O. Kristjánsson, Bjarni K. |
author_sort |
Beck, Samantha V. |
title |
Differences among families in craniofacial shape at early life-stages of Arctic charr (Salvelinus alpinus) |
title_short |
Differences among families in craniofacial shape at early life-stages of Arctic charr (Salvelinus alpinus) |
title_full |
Differences among families in craniofacial shape at early life-stages of Arctic charr (Salvelinus alpinus) |
title_fullStr |
Differences among families in craniofacial shape at early life-stages of Arctic charr (Salvelinus alpinus) |
title_full_unstemmed |
Differences among families in craniofacial shape at early life-stages of Arctic charr (Salvelinus alpinus) |
title_sort |
differences among families in craniofacial shape at early life-stages of arctic charr (salvelinus alpinus) |
publisher |
BioMed Central |
publishDate |
2020 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7586659/ http://www.ncbi.nlm.nih.gov/pubmed/33106153 https://doi.org/10.1186/s12861-020-00226-0 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic charr Arctic Salvelinus alpinus |
genre_facet |
Arctic charr Arctic Salvelinus alpinus |
op_source |
BMC Dev Biol |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7586659/ http://www.ncbi.nlm.nih.gov/pubmed/33106153 http://dx.doi.org/10.1186/s12861-020-00226-0 |
op_rights |
© The Author(s) 2020 Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data. |
op_rightsnorm |
CC0 PDM CC-BY |
op_doi |
https://doi.org/10.1186/s12861-020-00226-0 |
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BMC Developmental Biology |
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20 |
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1 |
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