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...
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Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1626377 http://www.ncbi.nlm.nih.gov/pubmed/17148222 https://doi.org/10.1098/rsbl.2005.0377 |
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ftpubmed:oai:pubmedcentral.nih.gov:1626377 2023-05-15T15:30:59+02:00 Loss of muscle fibres in a landlocked dwarf Atlantic salmon population Johnston, Ian A Abercromby, Marguerite Andersen, Øivind 2005-08-31 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1626377 http://www.ncbi.nlm.nih.gov/pubmed/17148222 https://doi.org/10.1098/rsbl.2005.0377 en eng The Royal Society http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1626377 http://www.ncbi.nlm.nih.gov/pubmed/17148222 http://dx.doi.org/10.1098/rsbl.2005.0377 © 2005 The Royal Society Research Article Text 2005 ftpubmed https://doi.org/10.1098/rsbl.2005.0377 2013-08-31T09:29:36Z 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 (Dmax) of fast muscle fibres in 4-year-old Bleke salmon (25–28 cm fork length) was 118 μm 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. Text Atlantic salmon Salmo salar PubMed Central (PMC) Norway Biology Letters 1 4 419 422 |
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Research Article Johnston, Ian A Abercromby, Marguerite Andersen, Øivind Loss of muscle fibres in a landlocked dwarf Atlantic salmon population |
topic_facet |
Research Article |
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 (Dmax) of fast muscle fibres in 4-year-old Bleke salmon (25–28 cm fork length) was 118 μm 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 |
Text |
author |
Johnston, Ian A Abercromby, Marguerite Andersen, Øivind |
author_facet |
Johnston, Ian A Abercromby, Marguerite Andersen, Øivind |
author_sort |
Johnston, Ian 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 |
publisher |
The Royal Society |
publishDate |
2005 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1626377 http://www.ncbi.nlm.nih.gov/pubmed/17148222 https://doi.org/10.1098/rsbl.2005.0377 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1626377 http://www.ncbi.nlm.nih.gov/pubmed/17148222 http://dx.doi.org/10.1098/rsbl.2005.0377 |
op_rights |
© 2005 The Royal Society |
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 |
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1766361461684174848 |