Muscle fibre number varies with haemoglobin phenotype in Atlantic cod as predicted by the optimal fibre number hypothesis
Atlantic cod (Gadus morhua L.) with the HbI-(2/2) haemoglobin phenotype have a higher blood oxygen affinity at low temperatures and a lower routine metabolic rate than individuals with the HbI-(1/1) phenotype. In the present study, muscle structure was found to be related to haemoglobin phenotype in...
Published in: | Biology Letters |
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2006
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Online Access: | https://research-portal.st-andrews.ac.uk/en/researchoutput/muscle-fibre-number-varies-with-haemoglobin-phenotype-in-atlantic-cod-as-predicted-by-the-optimal-fibre-number-hypothesis(ab734126-bbc4-4809-bbbd-adff8adf80f1).html https://doi.org/10.1098/rsbl.2006.0500 http://www.scopus.com/inward/record.url?scp=33845567119&partnerID=8YFLogxK |
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ftunstandrewcris:oai:research-portal.st-andrews.ac.uk:publications/ab734126-bbc4-4809-bbbd-adff8adf80f1 2024-06-23T07:51:02+00:00 Muscle fibre number varies with haemoglobin phenotype in Atlantic cod as predicted by the optimal fibre number hypothesis Johnston, Ian A. Abercromby, Marguerite Andersen, Oivind 2006-12-22 https://research-portal.st-andrews.ac.uk/en/researchoutput/muscle-fibre-number-varies-with-haemoglobin-phenotype-in-atlantic-cod-as-predicted-by-the-optimal-fibre-number-hypothesis(ab734126-bbc4-4809-bbbd-adff8adf80f1).html https://doi.org/10.1098/rsbl.2006.0500 http://www.scopus.com/inward/record.url?scp=33845567119&partnerID=8YFLogxK eng eng https://research-portal.st-andrews.ac.uk/en/researchoutput/muscle-fibre-number-varies-with-haemoglobin-phenotype-in-atlantic-cod-as-predicted-by-the-optimal-fibre-number-hypothesis(ab734126-bbc4-4809-bbbd-adff8adf80f1).html info:eu-repo/semantics/restrictedAccess Johnston , I A , Abercromby , M & Andersen , O 2006 , ' Muscle fibre number varies with haemoglobin phenotype in Atlantic cod as predicted by the optimal fibre number hypothesis ' , Biology Letters , vol. 2 , no. 4 , pp. 590-592 . https://doi.org/10.1098/rsbl.2006.0500 muscle fibre recruitment biogeographic patterning biodiversity HAEMOGLOBIN POLYMORPHISM GADUS-MORHUA POPULATIONS FISHES COASTAL GROWTH SALMON article 2006 ftunstandrewcris https://doi.org/10.1098/rsbl.2006.0500 2024-06-13T00:24:00Z Atlantic cod (Gadus morhua L.) with the HbI-(2/2) haemoglobin phenotype have a higher blood oxygen affinity at low temperatures and a lower routine metabolic rate than individuals with the HbI-(1/1) phenotype. In the present study, muscle structure was found to be related to haemoglobin phenotype in a coastal population of Atlantic cod from the Saltenfjord region of Northern Norway. The maximum number of fast muscle fibres ( FNmax) was reached at approximately 39 cm fork length and was 15% greater in the HbI-(1/1) than in the HbI-(2/2) phenotypes whereas the average fibre diameter for fish of the same fork length was significantly lower. Theoretically, the higher oxygen affinity of the HbI-(2/2) phenotype in the cold water of northern latitudes could have resulted in a relaxation of diffusional constraints at the level of individual muscle fibres, permitting the observed increase in fibre diameter. The results support the optimal fibre number hypothesis which envisages a trade-off between diffusional constraints and the energy cost of maintaining ionic homeostasis with fewer larger diameter muscle fibres in the HbI-(2/2) phenotype contributing to a lower routine metabolic rate. Article in Journal/Newspaper atlantic cod Gadus morhua Northern Norway University of St Andrews: Research Portal Norway Biology Letters 2 4 590 592 |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
muscle fibre recruitment biogeographic patterning biodiversity HAEMOGLOBIN POLYMORPHISM GADUS-MORHUA POPULATIONS FISHES COASTAL GROWTH SALMON |
spellingShingle |
muscle fibre recruitment biogeographic patterning biodiversity HAEMOGLOBIN POLYMORPHISM GADUS-MORHUA POPULATIONS FISHES COASTAL GROWTH SALMON Johnston, Ian A. Abercromby, Marguerite Andersen, Oivind Muscle fibre number varies with haemoglobin phenotype in Atlantic cod as predicted by the optimal fibre number hypothesis |
topic_facet |
muscle fibre recruitment biogeographic patterning biodiversity HAEMOGLOBIN POLYMORPHISM GADUS-MORHUA POPULATIONS FISHES COASTAL GROWTH SALMON |
description |
Atlantic cod (Gadus morhua L.) with the HbI-(2/2) haemoglobin phenotype have a higher blood oxygen affinity at low temperatures and a lower routine metabolic rate than individuals with the HbI-(1/1) phenotype. In the present study, muscle structure was found to be related to haemoglobin phenotype in a coastal population of Atlantic cod from the Saltenfjord region of Northern Norway. The maximum number of fast muscle fibres ( FNmax) was reached at approximately 39 cm fork length and was 15% greater in the HbI-(1/1) than in the HbI-(2/2) phenotypes whereas the average fibre diameter for fish of the same fork length was significantly lower. Theoretically, the higher oxygen affinity of the HbI-(2/2) phenotype in the cold water of northern latitudes could have resulted in a relaxation of diffusional constraints at the level of individual muscle fibres, permitting the observed increase in fibre diameter. The results support the optimal fibre number hypothesis which envisages a trade-off between diffusional constraints and the energy cost of maintaining ionic homeostasis with fewer larger diameter muscle fibres in the HbI-(2/2) phenotype contributing to a lower routine metabolic rate. |
format |
Article in Journal/Newspaper |
author |
Johnston, Ian A. Abercromby, Marguerite Andersen, Oivind |
author_facet |
Johnston, Ian A. Abercromby, Marguerite Andersen, Oivind |
author_sort |
Johnston, Ian A. |
title |
Muscle fibre number varies with haemoglobin phenotype in Atlantic cod as predicted by the optimal fibre number hypothesis |
title_short |
Muscle fibre number varies with haemoglobin phenotype in Atlantic cod as predicted by the optimal fibre number hypothesis |
title_full |
Muscle fibre number varies with haemoglobin phenotype in Atlantic cod as predicted by the optimal fibre number hypothesis |
title_fullStr |
Muscle fibre number varies with haemoglobin phenotype in Atlantic cod as predicted by the optimal fibre number hypothesis |
title_full_unstemmed |
Muscle fibre number varies with haemoglobin phenotype in Atlantic cod as predicted by the optimal fibre number hypothesis |
title_sort |
muscle fibre number varies with haemoglobin phenotype in atlantic cod as predicted by the optimal fibre number hypothesis |
publishDate |
2006 |
url |
https://research-portal.st-andrews.ac.uk/en/researchoutput/muscle-fibre-number-varies-with-haemoglobin-phenotype-in-atlantic-cod-as-predicted-by-the-optimal-fibre-number-hypothesis(ab734126-bbc4-4809-bbbd-adff8adf80f1).html https://doi.org/10.1098/rsbl.2006.0500 http://www.scopus.com/inward/record.url?scp=33845567119&partnerID=8YFLogxK |
geographic |
Norway |
geographic_facet |
Norway |
genre |
atlantic cod Gadus morhua Northern Norway |
genre_facet |
atlantic cod Gadus morhua Northern Norway |
op_source |
Johnston , I A , Abercromby , M & Andersen , O 2006 , ' Muscle fibre number varies with haemoglobin phenotype in Atlantic cod as predicted by the optimal fibre number hypothesis ' , Biology Letters , vol. 2 , no. 4 , pp. 590-592 . https://doi.org/10.1098/rsbl.2006.0500 |
op_relation |
https://research-portal.st-andrews.ac.uk/en/researchoutput/muscle-fibre-number-varies-with-haemoglobin-phenotype-in-atlantic-cod-as-predicted-by-the-optimal-fibre-number-hypothesis(ab734126-bbc4-4809-bbbd-adff8adf80f1).html |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1098/rsbl.2006.0500 |
container_title |
Biology Letters |
container_volume |
2 |
container_issue |
4 |
container_start_page |
590 |
op_container_end_page |
592 |
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1802642034199101440 |