The Between-Population Genetic Architecture of Growth, Maturation, and Plasticity in Atlantic Salmon
The between-population genetic architecture for growth and maturation has not been examined in detail for many animal species despite its central importance in understanding hybrid fitness. We studied the genetic architecture of population divergence in: (i) maturation probabilities at the same age;...
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ftpubmed:oai:pubmedcentral.nih.gov:3982675 2023-05-15T15:31:47+02:00 The Between-Population Genetic Architecture of Growth, Maturation, and Plasticity in Atlantic Salmon Debes, Paul Vincent Fraser, Dylan John Yates, Matthew Hutchings, Jeffrey A. 2014-04 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3982675 http://www.ncbi.nlm.nih.gov/pubmed/24473933 https://doi.org/10.1534/genetics.114.161729 en eng Genetics Society of America http://www.ncbi.nlm.nih.gov/pmc/articles/PMC http://www.ncbi.nlm.nih.gov/pubmed/24473933 http://dx.doi.org/10.1534/genetics.114.161729 Copyright © 2014 by the Genetics Society of America Investigations Text 2014 ftpubmed https://doi.org/10.1534/genetics.114.161729 2015-04-05T00:00:35Z The between-population genetic architecture for growth and maturation has not been examined in detail for many animal species despite its central importance in understanding hybrid fitness. We studied the genetic architecture of population divergence in: (i) maturation probabilities at the same age; (ii) size at age and growth, while accounting for maturity status and sex; and (iii) growth plasticity in response to environmental factors, using divergent wild and domesticated Atlantic salmon (Salmo salar). Our work examined two populations and their multigenerational hybrids in a common experimental arrangement in which salinity and quantity of suspended sediments were manipulated to mimic naturally occurring environmental variation. Average specific growth rates across environments differed among crosses, maturity groups, and cross-by-maturity groups, but a growth-rate reduction in the presence of suspended sediments was equal for all groups. Our results revealed both additive and nonadditive outbreeding effects for size at age and for growth rates that differed with life stage, as well as the presence of different sex- and size-specific maturation probabilities between populations. The major implication of our work is that estimates of the genetic architecture of growth and maturation can be biased if one does not simultaneously account for temporal changes in growth and for different maturation probabilities between populations. Namely, these correlated traits interact differently within each population and between sexes and among generations, due to nonadditive effects and a level of independence in the genetic control for traits. Our results emphasize the challenges to investigating and predicting phenotypic changes resulting from between-population outbreeding. Text Atlantic salmon Salmo salar PubMed Central (PMC) Genetics 196 4 1277 1291 |
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Investigations Debes, Paul Vincent Fraser, Dylan John Yates, Matthew Hutchings, Jeffrey A. The Between-Population Genetic Architecture of Growth, Maturation, and Plasticity in Atlantic Salmon |
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Investigations |
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The between-population genetic architecture for growth and maturation has not been examined in detail for many animal species despite its central importance in understanding hybrid fitness. We studied the genetic architecture of population divergence in: (i) maturation probabilities at the same age; (ii) size at age and growth, while accounting for maturity status and sex; and (iii) growth plasticity in response to environmental factors, using divergent wild and domesticated Atlantic salmon (Salmo salar). Our work examined two populations and their multigenerational hybrids in a common experimental arrangement in which salinity and quantity of suspended sediments were manipulated to mimic naturally occurring environmental variation. Average specific growth rates across environments differed among crosses, maturity groups, and cross-by-maturity groups, but a growth-rate reduction in the presence of suspended sediments was equal for all groups. Our results revealed both additive and nonadditive outbreeding effects for size at age and for growth rates that differed with life stage, as well as the presence of different sex- and size-specific maturation probabilities between populations. The major implication of our work is that estimates of the genetic architecture of growth and maturation can be biased if one does not simultaneously account for temporal changes in growth and for different maturation probabilities between populations. Namely, these correlated traits interact differently within each population and between sexes and among generations, due to nonadditive effects and a level of independence in the genetic control for traits. Our results emphasize the challenges to investigating and predicting phenotypic changes resulting from between-population outbreeding. |
format |
Text |
author |
Debes, Paul Vincent Fraser, Dylan John Yates, Matthew Hutchings, Jeffrey A. |
author_facet |
Debes, Paul Vincent Fraser, Dylan John Yates, Matthew Hutchings, Jeffrey A. |
author_sort |
Debes, Paul Vincent |
title |
The Between-Population Genetic Architecture of Growth, Maturation, and Plasticity in Atlantic Salmon |
title_short |
The Between-Population Genetic Architecture of Growth, Maturation, and Plasticity in Atlantic Salmon |
title_full |
The Between-Population Genetic Architecture of Growth, Maturation, and Plasticity in Atlantic Salmon |
title_fullStr |
The Between-Population Genetic Architecture of Growth, Maturation, and Plasticity in Atlantic Salmon |
title_full_unstemmed |
The Between-Population Genetic Architecture of Growth, Maturation, and Plasticity in Atlantic Salmon |
title_sort |
between-population genetic architecture of growth, maturation, and plasticity in atlantic salmon |
publisher |
Genetics Society of America |
publishDate |
2014 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3982675 http://www.ncbi.nlm.nih.gov/pubmed/24473933 https://doi.org/10.1534/genetics.114.161729 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC http://www.ncbi.nlm.nih.gov/pubmed/24473933 http://dx.doi.org/10.1534/genetics.114.161729 |
op_rights |
Copyright © 2014 by the Genetics Society of America |
op_doi |
https://doi.org/10.1534/genetics.114.161729 |
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Genetics |
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196 |
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4 |
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1277 |
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1291 |
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1766362296544657408 |