Hyperplasia and hypertrophy in the growth of skeletal muscle in juvenile Atlantic salmon, Salmo salar L.
Both red and white muscle fibre numbers in juvenile Atlantic salmon increased gradually with fish length throughout the freshwater growth period. Mean fibre area increased as fish grew to 6.5 cm f.l. , but thereafter was unrelated to fish length. Hyperplasia was most obvious when fish were growing f...
| Published in: | Journal of Fish Biology |
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| Main Authors: | , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Wiley
1990
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1111/j.1095-8649.1990.tb05884.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1990.tb05884.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1990.tb05884.x |
| Summary: | Both red and white muscle fibre numbers in juvenile Atlantic salmon increased gradually with fish length throughout the freshwater growth period. Mean fibre area increased as fish grew to 6.5 cm f.l. , but thereafter was unrelated to fish length. Hyperplasia was most obvious when fish were growing fastest, and was the dominant growth process in fish over 6.5 cm f.l. Hypertrophy was most important when growth was slow, as in autumn and winter. Mean white fibre area was significantly smaller in deep muscle than at medial and superficial sites. Total crossâsectional area of red, white and total trunk muscle increased with fish length. The ratio of red: white crossâsectional area increased with fish length to a plateau at about 10% after 6.5 cm f.l. |
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