Temperature until the 'eyed stage' of embryogenesis programmes the growth trajectory and muscle phenotype of adult Atlantic salmon.
We investigated how adult growth in Atlantic salmon (Salmo salar L.) was affected by changing embryonic temperature from fertilization until the completion of eye pigmentation. Fertilized eggs from several hundred families were divided between four temperature treatments (2, 5, 8 or 10 degrees C) an...
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ftunstandrewcris:oai:risweb.st-andrews.ac.uk:publications/9de133e1-cd94-4b70-b6cf-3846fd0bd88a 2023-05-15T15:30:58+02:00 Temperature until the 'eyed stage' of embryogenesis programmes the growth trajectory and muscle phenotype of adult Atlantic salmon. MacQueen, Daniel John Paxton, Charles George Mackay Johnston, Ian Alistair 2008-06-23 https://risweb.st-andrews.ac.uk/portal/en/researchoutput/temperature-until-the-eyed-stage-of-embryogenesis-programmes-the-growth-trajectory-and-muscle-phenotype-of-adult-atlantic-salmon(9de133e1-cd94-4b70-b6cf-3846fd0bd88a).html http://www.scopus.com/inward/record.url?scp=43249098776&partnerID=8YFLogxK eng eng info:eu-repo/semantics/restrictedAccess MacQueen , D J , Paxton , C G M & Johnston , I A 2008 , ' Temperature until the 'eyed stage' of embryogenesis programmes the growth trajectory and muscle phenotype of adult Atlantic salmon. ' , Biology Letters , vol. 4 , pp. 294 . article 2008 ftunstandrewcris 2021-12-26T14:17:53Z We investigated how adult growth in Atlantic salmon (Salmo salar L.) was affected by changing embryonic temperature from fertilization until the completion of eye pigmentation. Fertilized eggs from several hundred families were divided between four temperature treatments (2, 5, 8 or 10 degrees C) and subsequently reared in identical conditions in replicated tanks. Fish exposed to 2 and 5 degrees C treatments were significantly smaller at smoltification than groups at higher temperatures, but showed substantial compensatory catch-up growth. Remarkably, temperature during this short window of embryogenesis dictated adult myogenic phenotype three years later with significant treatment effects on the muscle fibre final number (FFN), maximum diameter, nuclear density and size distribution. FFN was highest for the 5 degrees C treatment and was reduced at higher and lower treatment temperatures. Our results require direct temperature effects on embryonic tissues, such as the stem cell-containing external cell layer, in order to produce persistent effects on juvenile and adult growth. Article in Journal/Newspaper Atlantic salmon Salmo salar University of St Andrews: Research Portal |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
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ftunstandrewcris |
language |
English |
description |
We investigated how adult growth in Atlantic salmon (Salmo salar L.) was affected by changing embryonic temperature from fertilization until the completion of eye pigmentation. Fertilized eggs from several hundred families were divided between four temperature treatments (2, 5, 8 or 10 degrees C) and subsequently reared in identical conditions in replicated tanks. Fish exposed to 2 and 5 degrees C treatments were significantly smaller at smoltification than groups at higher temperatures, but showed substantial compensatory catch-up growth. Remarkably, temperature during this short window of embryogenesis dictated adult myogenic phenotype three years later with significant treatment effects on the muscle fibre final number (FFN), maximum diameter, nuclear density and size distribution. FFN was highest for the 5 degrees C treatment and was reduced at higher and lower treatment temperatures. Our results require direct temperature effects on embryonic tissues, such as the stem cell-containing external cell layer, in order to produce persistent effects on juvenile and adult growth. |
format |
Article in Journal/Newspaper |
author |
MacQueen, Daniel John Paxton, Charles George Mackay Johnston, Ian Alistair |
spellingShingle |
MacQueen, Daniel John Paxton, Charles George Mackay Johnston, Ian Alistair Temperature until the 'eyed stage' of embryogenesis programmes the growth trajectory and muscle phenotype of adult Atlantic salmon. |
author_facet |
MacQueen, Daniel John Paxton, Charles George Mackay Johnston, Ian Alistair |
author_sort |
MacQueen, Daniel John |
title |
Temperature until the 'eyed stage' of embryogenesis programmes the growth trajectory and muscle phenotype of adult Atlantic salmon. |
title_short |
Temperature until the 'eyed stage' of embryogenesis programmes the growth trajectory and muscle phenotype of adult Atlantic salmon. |
title_full |
Temperature until the 'eyed stage' of embryogenesis programmes the growth trajectory and muscle phenotype of adult Atlantic salmon. |
title_fullStr |
Temperature until the 'eyed stage' of embryogenesis programmes the growth trajectory and muscle phenotype of adult Atlantic salmon. |
title_full_unstemmed |
Temperature until the 'eyed stage' of embryogenesis programmes the growth trajectory and muscle phenotype of adult Atlantic salmon. |
title_sort |
temperature until the 'eyed stage' of embryogenesis programmes the growth trajectory and muscle phenotype of adult atlantic salmon. |
publishDate |
2008 |
url |
https://risweb.st-andrews.ac.uk/portal/en/researchoutput/temperature-until-the-eyed-stage-of-embryogenesis-programmes-the-growth-trajectory-and-muscle-phenotype-of-adult-atlantic-salmon(9de133e1-cd94-4b70-b6cf-3846fd0bd88a).html http://www.scopus.com/inward/record.url?scp=43249098776&partnerID=8YFLogxK |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
MacQueen , D J , Paxton , C G M & Johnston , I A 2008 , ' Temperature until the 'eyed stage' of embryogenesis programmes the growth trajectory and muscle phenotype of adult Atlantic salmon. ' , Biology Letters , vol. 4 , pp. 294 . |
op_rights |
info:eu-repo/semantics/restrictedAccess |
_version_ |
1766361458604507136 |