Loss of muscle fibres in a landlocked dwarf Atlantic salmon population
Growth of fast myotomal muscle in teleosts involves the continuous production of muscle fibres until some genetically pre-determined length. The dwarf landlocked (Bleke) population of Atlantic salmon (Salmo salar L.) from Byglands-fjord, Southern Norway mature at about 25 cm fork length and reach a...
Published in: | Biology Letters |
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Language: | English |
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2005
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Online Access: | https://risweb.st-andrews.ac.uk/portal/en/researchoutput/loss-of-muscle-fibres-in-a-landlocked-dwarf-atlantic-salmon-population(515c09bc-cee2-42e8-a74a-2b13050de731).html https://doi.org/10.1098/rsbl.2005.0377 http://www.scopus.com/inward/record.url?scp=29144439723&partnerID=8YFLogxK |
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ftunstandrewcris:oai:risweb.st-andrews.ac.uk:publications/515c09bc-cee2-42e8-a74a-2b13050de731 2023-05-15T15:31:08+02:00 Loss of muscle fibres in a landlocked dwarf Atlantic salmon population Johnston, I A Abercromby, M Andersen, O 2005-12-22 https://risweb.st-andrews.ac.uk/portal/en/researchoutput/loss-of-muscle-fibres-in-a-landlocked-dwarf-atlantic-salmon-population(515c09bc-cee2-42e8-a74a-2b13050de731).html https://doi.org/10.1098/rsbl.2005.0377 http://www.scopus.com/inward/record.url?scp=29144439723&partnerID=8YFLogxK eng eng info:eu-repo/semantics/restrictedAccess Johnston , I A , Abercromby , M & Andersen , O 2005 , ' Loss of muscle fibres in a landlocked dwarf Atlantic salmon population ' , Biology Letters , vol. 1 , no. 4 , pp. 419-422 . https://doi.org/10.1098/rsbl.2005.0377 dwarfism body size evolution Salmonidae skeletal muscle growth muscle fibre recruitment RAPID EVOLUTION SEAWATER STAGES SALAR NUMBER PLASTICITY article 2005 ftunstandrewcris https://doi.org/10.1098/rsbl.2005.0377 2021-12-26T14:16:21Z Growth of fast myotomal muscle in teleosts involves the continuous production of muscle fibres until some genetically pre-determined length. The dwarf landlocked (Bleke) population of Atlantic salmon (Salmo salar L.) from Byglands-fjord, Southern Norway mature at about 25 cm fork length and reach a maximum size of only 30 cm in the wild. The maximum diameter (D-max) of fast muscle fibres in 4-year-old Bleke salmon (25-28 cm fork length) was 119 mu m and not significantly different from that found in immature migratory salmon of a similar size. In contrast no evidence for active fibre recruitment was found in the Bleke salmon, such that the maximum fibre number, FNmax, was only 21-30% of that reported in typical farmed and wild migratory populations, respectively. We hypothesise that, once established, the physiological consequences of the dwarf condition led to rapid selection for reduced fibre number, possibly to reduce the maintenance costs associated with ionic homeostasis. Article in Journal/Newspaper Atlantic salmon Salmo salar University of St Andrews: Research Portal Norway Biology Letters 1 4 419 422 |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
dwarfism body size evolution Salmonidae skeletal muscle growth muscle fibre recruitment RAPID EVOLUTION SEAWATER STAGES SALAR NUMBER PLASTICITY |
spellingShingle |
dwarfism body size evolution Salmonidae skeletal muscle growth muscle fibre recruitment RAPID EVOLUTION SEAWATER STAGES SALAR NUMBER PLASTICITY Johnston, I A Abercromby, M Andersen, O Loss of muscle fibres in a landlocked dwarf Atlantic salmon population |
topic_facet |
dwarfism body size evolution Salmonidae skeletal muscle growth muscle fibre recruitment RAPID EVOLUTION SEAWATER STAGES SALAR NUMBER PLASTICITY |
description |
Growth of fast myotomal muscle in teleosts involves the continuous production of muscle fibres until some genetically pre-determined length. The dwarf landlocked (Bleke) population of Atlantic salmon (Salmo salar L.) from Byglands-fjord, Southern Norway mature at about 25 cm fork length and reach a maximum size of only 30 cm in the wild. The maximum diameter (D-max) of fast muscle fibres in 4-year-old Bleke salmon (25-28 cm fork length) was 119 mu m and not significantly different from that found in immature migratory salmon of a similar size. In contrast no evidence for active fibre recruitment was found in the Bleke salmon, such that the maximum fibre number, FNmax, was only 21-30% of that reported in typical farmed and wild migratory populations, respectively. We hypothesise that, once established, the physiological consequences of the dwarf condition led to rapid selection for reduced fibre number, possibly to reduce the maintenance costs associated with ionic homeostasis. |
format |
Article in Journal/Newspaper |
author |
Johnston, I A Abercromby, M Andersen, O |
author_facet |
Johnston, I A Abercromby, M Andersen, O |
author_sort |
Johnston, I A |
title |
Loss of muscle fibres in a landlocked dwarf Atlantic salmon population |
title_short |
Loss of muscle fibres in a landlocked dwarf Atlantic salmon population |
title_full |
Loss of muscle fibres in a landlocked dwarf Atlantic salmon population |
title_fullStr |
Loss of muscle fibres in a landlocked dwarf Atlantic salmon population |
title_full_unstemmed |
Loss of muscle fibres in a landlocked dwarf Atlantic salmon population |
title_sort |
loss of muscle fibres in a landlocked dwarf atlantic salmon population |
publishDate |
2005 |
url |
https://risweb.st-andrews.ac.uk/portal/en/researchoutput/loss-of-muscle-fibres-in-a-landlocked-dwarf-atlantic-salmon-population(515c09bc-cee2-42e8-a74a-2b13050de731).html https://doi.org/10.1098/rsbl.2005.0377 http://www.scopus.com/inward/record.url?scp=29144439723&partnerID=8YFLogxK |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Johnston , I A , Abercromby , M & Andersen , O 2005 , ' Loss of muscle fibres in a landlocked dwarf Atlantic salmon population ' , Biology Letters , vol. 1 , no. 4 , pp. 419-422 . https://doi.org/10.1098/rsbl.2005.0377 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1098/rsbl.2005.0377 |
container_title |
Biology Letters |
container_volume |
1 |
container_issue |
4 |
container_start_page |
419 |
op_container_end_page |
422 |
_version_ |
1766361631670927360 |