The effect of starvation on the ultrastructure of the red and white myotomal muscles of the crucian carp (Carassius carassius) |
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Authors: | S Patterson G Goldspink |
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Institution: | (1) Muscle Research Laboratory, Department of Zoology, University of Hull, Yorkshire, England |
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Abstract: | Summary The effect of 16 weeks total starvation on the ultrastructure of the red and white myotomal muscles of the crucian carp (Carassius Carassius) has been investigated.
In the white fibres the amount of myofibrillar material fell from 89.6% to 70.7% of the total fibre volume whilst in the red
fibres the fall was from 72.2% to 70.3%. The sarcoplasmic reticulum appeared to have become swollen during starvation in both
fibre types. In the white fibres the terminal cisternae of some triads seem to have fused. The volume of the red fibres occupied
by mitochondria was reduced from 16.2 % to 5.9 %. The concentration of mitochondria in the white fibres was too low to detect
any quantitative changes. A marked reduction in the amount of euchromatin material was observed in most white fibre nuclei
and many red fibre nuclei.
Many of the ultrastructural changes noted in the present study can be correlated with biochemical changes known to occur in
the red and white myotomal muscles of fish during starvation.
This work was supported by a grant from the Natural Environmental Research Council. |
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Keywords: | Muscle Fish Starvation Ultrastructure |
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