ENERGY COST OF CONTRACTION IN FAST AND SLOW MUSCLE FIBRES ISOLATED FROM AN ELASMOBRANCH AND AN ANTARCTIC TELEOST FISH
1. Single fast and small bundles of slow fibres were isolated from the muscles of an elasmobranch (dogfish, Scyliorhinus canicula) and an Antarctic teleost (Notothenia neglecta). A third fibre type present in the dogfish (superficial fibre) was also isolated. Fibres were chemically skinned with a no...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.538.8893 2023-05-15T13:53:03+02:00 ENERGY COST OF CONTRACTION IN FAST AND SLOW MUSCLE FIBRES ISOLATED FROM AN ELASMOBRANCH AND AN ANTARCTIC TELEOST FISH J. D. Altringham I. A. Johnston The Pennsylvania State University CiteSeerX Archives 1985 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.538.8893 http://jeb.biologists.org/content/121/1/239.full.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.538.8893 http://jeb.biologists.org/content/121/1/239.full.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://jeb.biologists.org/content/121/1/239.full.pdf text 1985 ftciteseerx 2016-01-08T10:56:37Z 1. Single fast and small bundles of slow fibres were isolated from the muscles of an elasmobranch (dogfish, Scyliorhinus canicula) and an Antarctic teleost (Notothenia neglecta). A third fibre type present in the dogfish (superficial fibre) was also isolated. Fibres were chemically skinned with a non-ionic detergent. 2. Tension generation and ATPase activity were measured during isometric activations. ATPase activity was estimated by measuring the release of ADP into the experimental solutions using high performance liquid chromatography. 3. In the dogfish fibre types, both tension and ATPase activity increased in the order superficial < slow < fast, even after corrections were made for differences in myofibrillar density. The economy of isometric contraction (tension/ATPase activity) was 50-60 % higher in the slow and superficial fibres than in the fast. 4. In the Antarctic species, both tension and ATPase activity of the fast fibres were higher than those of the slow fibres, and the slow fibres were 30 % more economical than fast fibres. After correction for differences in myofibrillar density, tensions were very similar. 5. The results are discussed with reference to the energy supply, recruitment pattern and function of the various fibre types. Text Antarc* Antarctic Unknown Antarctic Canicula ENVELOPE(-58.515,-58.515,-63.717,-63.717) The Antarctic |
institution |
Open Polar |
collection |
Unknown |
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ftciteseerx |
language |
English |
description |
1. Single fast and small bundles of slow fibres were isolated from the muscles of an elasmobranch (dogfish, Scyliorhinus canicula) and an Antarctic teleost (Notothenia neglecta). A third fibre type present in the dogfish (superficial fibre) was also isolated. Fibres were chemically skinned with a non-ionic detergent. 2. Tension generation and ATPase activity were measured during isometric activations. ATPase activity was estimated by measuring the release of ADP into the experimental solutions using high performance liquid chromatography. 3. In the dogfish fibre types, both tension and ATPase activity increased in the order superficial < slow < fast, even after corrections were made for differences in myofibrillar density. The economy of isometric contraction (tension/ATPase activity) was 50-60 % higher in the slow and superficial fibres than in the fast. 4. In the Antarctic species, both tension and ATPase activity of the fast fibres were higher than those of the slow fibres, and the slow fibres were 30 % more economical than fast fibres. After correction for differences in myofibrillar density, tensions were very similar. 5. The results are discussed with reference to the energy supply, recruitment pattern and function of the various fibre types. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
J. D. Altringham I. A. Johnston |
spellingShingle |
J. D. Altringham I. A. Johnston ENERGY COST OF CONTRACTION IN FAST AND SLOW MUSCLE FIBRES ISOLATED FROM AN ELASMOBRANCH AND AN ANTARCTIC TELEOST FISH |
author_facet |
J. D. Altringham I. A. Johnston |
author_sort |
J. D. Altringham |
title |
ENERGY COST OF CONTRACTION IN FAST AND SLOW MUSCLE FIBRES ISOLATED FROM AN ELASMOBRANCH AND AN ANTARCTIC TELEOST FISH |
title_short |
ENERGY COST OF CONTRACTION IN FAST AND SLOW MUSCLE FIBRES ISOLATED FROM AN ELASMOBRANCH AND AN ANTARCTIC TELEOST FISH |
title_full |
ENERGY COST OF CONTRACTION IN FAST AND SLOW MUSCLE FIBRES ISOLATED FROM AN ELASMOBRANCH AND AN ANTARCTIC TELEOST FISH |
title_fullStr |
ENERGY COST OF CONTRACTION IN FAST AND SLOW MUSCLE FIBRES ISOLATED FROM AN ELASMOBRANCH AND AN ANTARCTIC TELEOST FISH |
title_full_unstemmed |
ENERGY COST OF CONTRACTION IN FAST AND SLOW MUSCLE FIBRES ISOLATED FROM AN ELASMOBRANCH AND AN ANTARCTIC TELEOST FISH |
title_sort |
energy cost of contraction in fast and slow muscle fibres isolated from an elasmobranch and an antarctic teleost fish |
publishDate |
1985 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.538.8893 http://jeb.biologists.org/content/121/1/239.full.pdf |
long_lat |
ENVELOPE(-58.515,-58.515,-63.717,-63.717) |
geographic |
Antarctic Canicula The Antarctic |
geographic_facet |
Antarctic Canicula The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
http://jeb.biologists.org/content/121/1/239.full.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.538.8893 http://jeb.biologists.org/content/121/1/239.full.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766258014136827904 |