The so-called tonic muscle fibre type in cyprinid axial muscle: their morphology and response to endurance exercise training

The morphology and the effect of an endurance training programme on tonic muscle fibres were studied in chub Leuciscus cephalus, by means of histochemistry and immunohistochemistry, electronmicroscopy and morphometry/stereology. Location and distribution, SDH‐ and mATPase‐activity, reaction to an an...

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Bibliographic Details
Published in:Journal of fish biology 1997-03, Vol.50 (3), p.487-497
Main Author: Saenger, A M
Format: Article
Language:English
Subjects:
Biological and medical sciences
electronmicroscopy
endurance training
Freshwater
Fundamental and applied biological sciences. Psychology
histochemistry
immunohistochemistry
Leuciscus cephalus
morphometry
Striated muscle. Tendons
tonic muscle fibre
Vertebrates: osteoarticular system, musculoskeletal system
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Summary:The morphology and the effect of an endurance training programme on tonic muscle fibres were studied in chub Leuciscus cephalus, by means of histochemistry and immunohistochemistry, electronmicroscopy and morphometry/stereology. Location and distribution, SDH‐ and mATPase‐activity, reaction to an anti‐tonic myosin antibody and ultrastructural features of the fibre type were investigated. With regard to training conditions, fibre size was not significantly affected. However, an increase in the volume densities of mitochondria, lipid and myofibrils can be observed, suggesting a training influence on the aerobic capacity of the so‐called tonic muscle fibres. Based on the quantitative findings, the fine structure and the response to training, similarities with intermediate muscle fibres and the functional role of these so‐called tonic muscle fibres are discussed.
ISSN:0022-1112
1095-8649
DOI:10.1111/j.1095-8649.1997.tb01944.x