Table1_Quantitative Genetics of Smoltification Status at the Time of Seawater Transfer in Atlantic Salmon (Salmo Salar).DOCX
High mortality during grow out in the sea is a challenge for farmed Atlantic salmon production in Norway and globally, which is partly attributed to suboptimal smolt quality. In this study, two groups of pre-smolts were put on a standard light smoltification regime with alternating 12L:12D per day f...
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ftsmithonian:oai:figshare.com:article/16911100 2023-05-15T15:31:11+02:00 Table1_Quantitative Genetics of Smoltification Status at the Time of Seawater Transfer in Atlantic Salmon (Salmo Salar).DOCX Hooi Ling Khaw (4691419) Bjarne Gjerde (782645) Solomon A. Boison (11629531) Elise Hjelle (11629534) Gareth F. Difford (11629537) 2021-11-01T04:07:10Z https://doi.org/10.3389/fgene.2021.696893.s001 unknown https://figshare.com/articles/dataset/Table1_Quantitative_Genetics_of_Smoltification_Status_at_the_Time_of_Seawater_Transfer_in_Atlantic_Salmon_Salmo_Salar_DOCX/16911100 doi:10.3389/fgene.2021.696893.s001 CC BY 4.0 CC-BY Genetics Genetic Engineering Biomarkers Developmental Genetics (incl. Sex Determination) Epigenetics (incl. Genome Methylation and Epigenomics) Gene Expression (incl. Microarray and other genome-wide approaches) Genome Structure and Regulation Genomics Genetically Modified Animals Livestock Cloning Gene and Molecular Therapy smoltification atlantic salmon 0+ and 1+ smolts heritability genetic correlations optimum seawater transfer Dataset 2021 ftsmithonian https://doi.org/10.3389/fgene.2021.696893.s001 2021-12-19T22:57:36Z High mortality during grow out in the sea is a challenge for farmed Atlantic salmon production in Norway and globally, which is partly attributed to suboptimal smolt quality. In this study, two groups of pre-smolts were put on a standard light smoltification regime with alternating 12L:12D per day for 6 weeks (Phase I), followed by 24L:0D per day for 6 weeks (Phase II); one group was 0 + smolt (EXP1) and the other 1 + smolt (EXP2). To monitor the smoltification status of the fish, 100 (EXP1) and 60 (EXP2) fish were randomly sampled per week during Phase II. The following phenotypes for smoltification status were studied: RT-qPCR relative mRNA expression of values of two alpha catalytic subunits of the variants of the Na + K + ATPase (NKA) expressed in the sampled gill tissues of each fish. The first variant, alpha1a with increased expression in freshwater (FW) and the second variant alpha1b with increased expression in seawater variant (SW), as well as their ratio SW/FW. At the optimal time for seawater transfer based on the SW/FW trait, 1,000 (at sixth sampling of EXP1) and 1,500 (at fifth sampling of EXP2) fish were sampled for genetic parameter estimation. The individual variation in FW, SW, and SW/FW was very large at each of the seven samplings indicating a large variation among individuals in the optimum time of transfer to seawater. SW/FW showed significant genetic variation in both 0+ and 1+ smolts, which indicates the possibility for selection for improved synchronization of smoltification status of Atlantic salmon at the time where the largest proportion of the fish is considered to be smolt. However, the genetic correlation between SW/FW of 0+ and 1+ was not significantly different from zero indicating very little shared genetic variation in SW/FW in 0+ and 1+ fish. Smoltification phenotypes showed temporal progression over the smoltification period, and this progression varied between 0+ and 1+ smolt highlighting the importance of correctly timing the major sampling point, and when cohorts are transferred to seawater. This also highlighted the need for further research into noninvasive methods of objectively measuring individual smoltification through time and subsequent smolt survival and growth rate at sea. Dataset Atlantic salmon Salmo salar Unknown Norway |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftsmithonian |
language |
unknown |
topic |
Genetics Genetic Engineering Biomarkers Developmental Genetics (incl. Sex Determination) Epigenetics (incl. Genome Methylation and Epigenomics) Gene Expression (incl. Microarray and other genome-wide approaches) Genome Structure and Regulation Genomics Genetically Modified Animals Livestock Cloning Gene and Molecular Therapy smoltification atlantic salmon 0+ and 1+ smolts heritability genetic correlations optimum seawater transfer |
spellingShingle |
Genetics Genetic Engineering Biomarkers Developmental Genetics (incl. Sex Determination) Epigenetics (incl. Genome Methylation and Epigenomics) Gene Expression (incl. Microarray and other genome-wide approaches) Genome Structure and Regulation Genomics Genetically Modified Animals Livestock Cloning Gene and Molecular Therapy smoltification atlantic salmon 0+ and 1+ smolts heritability genetic correlations optimum seawater transfer Hooi Ling Khaw (4691419) Bjarne Gjerde (782645) Solomon A. Boison (11629531) Elise Hjelle (11629534) Gareth F. Difford (11629537) Table1_Quantitative Genetics of Smoltification Status at the Time of Seawater Transfer in Atlantic Salmon (Salmo Salar).DOCX |
topic_facet |
Genetics Genetic Engineering Biomarkers Developmental Genetics (incl. Sex Determination) Epigenetics (incl. Genome Methylation and Epigenomics) Gene Expression (incl. Microarray and other genome-wide approaches) Genome Structure and Regulation Genomics Genetically Modified Animals Livestock Cloning Gene and Molecular Therapy smoltification atlantic salmon 0+ and 1+ smolts heritability genetic correlations optimum seawater transfer |
description |
High mortality during grow out in the sea is a challenge for farmed Atlantic salmon production in Norway and globally, which is partly attributed to suboptimal smolt quality. In this study, two groups of pre-smolts were put on a standard light smoltification regime with alternating 12L:12D per day for 6 weeks (Phase I), followed by 24L:0D per day for 6 weeks (Phase II); one group was 0 + smolt (EXP1) and the other 1 + smolt (EXP2). To monitor the smoltification status of the fish, 100 (EXP1) and 60 (EXP2) fish were randomly sampled per week during Phase II. The following phenotypes for smoltification status were studied: RT-qPCR relative mRNA expression of values of two alpha catalytic subunits of the variants of the Na + K + ATPase (NKA) expressed in the sampled gill tissues of each fish. The first variant, alpha1a with increased expression in freshwater (FW) and the second variant alpha1b with increased expression in seawater variant (SW), as well as their ratio SW/FW. At the optimal time for seawater transfer based on the SW/FW trait, 1,000 (at sixth sampling of EXP1) and 1,500 (at fifth sampling of EXP2) fish were sampled for genetic parameter estimation. The individual variation in FW, SW, and SW/FW was very large at each of the seven samplings indicating a large variation among individuals in the optimum time of transfer to seawater. SW/FW showed significant genetic variation in both 0+ and 1+ smolts, which indicates the possibility for selection for improved synchronization of smoltification status of Atlantic salmon at the time where the largest proportion of the fish is considered to be smolt. However, the genetic correlation between SW/FW of 0+ and 1+ was not significantly different from zero indicating very little shared genetic variation in SW/FW in 0+ and 1+ fish. Smoltification phenotypes showed temporal progression over the smoltification period, and this progression varied between 0+ and 1+ smolt highlighting the importance of correctly timing the major sampling point, and when cohorts are transferred to seawater. This also highlighted the need for further research into noninvasive methods of objectively measuring individual smoltification through time and subsequent smolt survival and growth rate at sea. |
format |
Dataset |
author |
Hooi Ling Khaw (4691419) Bjarne Gjerde (782645) Solomon A. Boison (11629531) Elise Hjelle (11629534) Gareth F. Difford (11629537) |
author_facet |
Hooi Ling Khaw (4691419) Bjarne Gjerde (782645) Solomon A. Boison (11629531) Elise Hjelle (11629534) Gareth F. Difford (11629537) |
author_sort |
Hooi Ling Khaw (4691419) |
title |
Table1_Quantitative Genetics of Smoltification Status at the Time of Seawater Transfer in Atlantic Salmon (Salmo Salar).DOCX |
title_short |
Table1_Quantitative Genetics of Smoltification Status at the Time of Seawater Transfer in Atlantic Salmon (Salmo Salar).DOCX |
title_full |
Table1_Quantitative Genetics of Smoltification Status at the Time of Seawater Transfer in Atlantic Salmon (Salmo Salar).DOCX |
title_fullStr |
Table1_Quantitative Genetics of Smoltification Status at the Time of Seawater Transfer in Atlantic Salmon (Salmo Salar).DOCX |
title_full_unstemmed |
Table1_Quantitative Genetics of Smoltification Status at the Time of Seawater Transfer in Atlantic Salmon (Salmo Salar).DOCX |
title_sort |
table1_quantitative genetics of smoltification status at the time of seawater transfer in atlantic salmon (salmo salar).docx |
publishDate |
2021 |
url |
https://doi.org/10.3389/fgene.2021.696893.s001 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_relation |
https://figshare.com/articles/dataset/Table1_Quantitative_Genetics_of_Smoltification_Status_at_the_Time_of_Seawater_Transfer_in_Atlantic_Salmon_Salmo_Salar_DOCX/16911100 doi:10.3389/fgene.2021.696893.s001 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fgene.2021.696893.s001 |
_version_ |
1766361672454242304 |