Characterisation of the swimming muscles of two Subantarctic notothenioids
The histochemical characteristics and distribution of muscle fibre types have been investigated in the swimming muscles of the robalo, Eleginops maclovinus and the lorcho, Patagonotothen tessellata, Subantarctic notothenioids that inhabit the Beagle Channel. The fibre types were differentiated on th...
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ftunstandrewcris:oai:research-portal.st-andrews.ac.uk:publications/6844050b-ca55-46a9-912c-063af3736559 2024-06-23T07:47:54+00:00 Characterisation of the swimming muscles of two Subantarctic notothenioids Fernandez, D A Calvo, J Johnston, I A 1999-12 https://research-portal.st-andrews.ac.uk/en/researchoutput/characterisation-of-the-swimming-muscles-of-two-subantarctic-notothenioids(6844050b-ca55-46a9-912c-063af3736559).html http://www.scopus.com/inward/record.url?scp=17944393230&partnerID=8YFLogxK eng eng https://research-portal.st-andrews.ac.uk/en/researchoutput/characterisation-of-the-swimming-muscles-of-two-subantarctic-notothenioids(6844050b-ca55-46a9-912c-063af3736559).html info:eu-repo/semantics/restrictedAccess Fernandez , D A , Calvo , J & Johnston , I A 1999 , ' Characterisation of the swimming muscles of two Subantarctic notothenioids ' , Scientia Marina , vol. 63 , pp. 477-484 . Subantarctic notothenioids muscle histochemistry swimming muscles myosin ATPase FIBER TYPES MYOTOMAL MUSCLE ANTARCTIC FISH HISTOCHEMICAL CHARACTERIZATION REARING TEMPERATURE BEAGLE CHANNEL FRESH WATER MUSCULATURE ARGENTINA article 1999 ftunstandrewcris 2024-06-13T00:26:44Z The histochemical characteristics and distribution of muscle fibre types have been investigated in the swimming muscles of the robalo, Eleginops maclovinus and the lorcho, Patagonotothen tessellata, Subantarctic notothenioids that inhabit the Beagle Channel. The fibre types were differentiated on the basis of glycogen and lipid contents and succinate dehydrogenase and myofibrillar ATPase (mATPase) activities. White, red, intermediate and tonic fibres were present in the axial muscle of both species. The same fibre types were identified in the pectoral fin adductor muscles, although the intermediate type was absent. The mATPase technique performed at room temperature (21 degrees C) allowed a good differentiation of fibre types. overcoming the problems found by previous researchers when applying this technique to Antarctic notothenioids. Four different zones (peripheral, mosaic, main and adjacent to the bone) were found in the adductor profundis muscle. The proportion of the zones varied along the length of the adductor muscle. For both species, the percentage of red fibres found in the axial muscles was less than 5%, indicating that sustained swimming ability is not dependent on these muscles. The pectoral muscle mass/carcase mass ratio was significantly greater in E. maclovinus than in P. tessellata, reflecting a greater capacity for sustained swimming using pectoral fins. Article in Journal/Newspaper Antarc* Antarctic University of St Andrews: Research Portal Antarctic Argentina |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
Subantarctic notothenioids muscle histochemistry swimming muscles myosin ATPase FIBER TYPES MYOTOMAL MUSCLE ANTARCTIC FISH HISTOCHEMICAL CHARACTERIZATION REARING TEMPERATURE BEAGLE CHANNEL FRESH WATER MUSCULATURE ARGENTINA |
spellingShingle |
Subantarctic notothenioids muscle histochemistry swimming muscles myosin ATPase FIBER TYPES MYOTOMAL MUSCLE ANTARCTIC FISH HISTOCHEMICAL CHARACTERIZATION REARING TEMPERATURE BEAGLE CHANNEL FRESH WATER MUSCULATURE ARGENTINA Fernandez, D A Calvo, J Johnston, I A Characterisation of the swimming muscles of two Subantarctic notothenioids |
topic_facet |
Subantarctic notothenioids muscle histochemistry swimming muscles myosin ATPase FIBER TYPES MYOTOMAL MUSCLE ANTARCTIC FISH HISTOCHEMICAL CHARACTERIZATION REARING TEMPERATURE BEAGLE CHANNEL FRESH WATER MUSCULATURE ARGENTINA |
description |
The histochemical characteristics and distribution of muscle fibre types have been investigated in the swimming muscles of the robalo, Eleginops maclovinus and the lorcho, Patagonotothen tessellata, Subantarctic notothenioids that inhabit the Beagle Channel. The fibre types were differentiated on the basis of glycogen and lipid contents and succinate dehydrogenase and myofibrillar ATPase (mATPase) activities. White, red, intermediate and tonic fibres were present in the axial muscle of both species. The same fibre types were identified in the pectoral fin adductor muscles, although the intermediate type was absent. The mATPase technique performed at room temperature (21 degrees C) allowed a good differentiation of fibre types. overcoming the problems found by previous researchers when applying this technique to Antarctic notothenioids. Four different zones (peripheral, mosaic, main and adjacent to the bone) were found in the adductor profundis muscle. The proportion of the zones varied along the length of the adductor muscle. For both species, the percentage of red fibres found in the axial muscles was less than 5%, indicating that sustained swimming ability is not dependent on these muscles. The pectoral muscle mass/carcase mass ratio was significantly greater in E. maclovinus than in P. tessellata, reflecting a greater capacity for sustained swimming using pectoral fins. |
format |
Article in Journal/Newspaper |
author |
Fernandez, D A Calvo, J Johnston, I A |
author_facet |
Fernandez, D A Calvo, J Johnston, I A |
author_sort |
Fernandez, D A |
title |
Characterisation of the swimming muscles of two Subantarctic notothenioids |
title_short |
Characterisation of the swimming muscles of two Subantarctic notothenioids |
title_full |
Characterisation of the swimming muscles of two Subantarctic notothenioids |
title_fullStr |
Characterisation of the swimming muscles of two Subantarctic notothenioids |
title_full_unstemmed |
Characterisation of the swimming muscles of two Subantarctic notothenioids |
title_sort |
characterisation of the swimming muscles of two subantarctic notothenioids |
publishDate |
1999 |
url |
https://research-portal.st-andrews.ac.uk/en/researchoutput/characterisation-of-the-swimming-muscles-of-two-subantarctic-notothenioids(6844050b-ca55-46a9-912c-063af3736559).html http://www.scopus.com/inward/record.url?scp=17944393230&partnerID=8YFLogxK |
geographic |
Antarctic Argentina |
geographic_facet |
Antarctic Argentina |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Fernandez , D A , Calvo , J & Johnston , I A 1999 , ' Characterisation of the swimming muscles of two Subantarctic notothenioids ' , Scientia Marina , vol. 63 , pp. 477-484 . |
op_relation |
https://research-portal.st-andrews.ac.uk/en/researchoutput/characterisation-of-the-swimming-muscles-of-two-subantarctic-notothenioids(6844050b-ca55-46a9-912c-063af3736559).html |
op_rights |
info:eu-repo/semantics/restrictedAccess |
_version_ |
1802638140753575936 |