Morphometric estimates for fiber ultrastructure in Weddell seals
| Animal . | Muscle . | Vv(mt,f) % . | Vv(ms,f) % . | Vv(mi,f) % . | Vv(li,f) % . | Vv(my,f) % . |
|---|---|---|---|---|---|---|
| Weddell seal (N=13) | Longissimus dorsi | 3.13±0.28 | 0.09±0.04 | 3.01±0.28 | 0.16±0.07 | 81.90±1.50 |
| Pectoralis | 2.78±0.21 | 0.14±0.06 | 2.62±0.18 | 0.06±0.05 | 87.3±0.9 | |
| Hindlimb | 2.89±0.17 | 0.16±0.05 | 2.74±0.16 | 0.13±0.04 | 87.4±1.4 | |
| Dog (N=6) | Hindlimb | 5.9±0.5* | 0.6±0.1* | 5.3±0.4* | 0.1±0.0 | 87.2±0.7 |
| Animal . | Muscle . | Vv(mt,f) % . | Vv(ms,f) % . | Vv(mi,f) % . | Vv(li,f) % . | Vv(my,f) % . |
|---|---|---|---|---|---|---|
| Weddell seal (N=13) | Longissimus dorsi | 3.13±0.28 | 0.09±0.04 | 3.01±0.28 | 0.16±0.07 | 81.90±1.50 |
| Pectoralis | 2.78±0.21 | 0.14±0.06 | 2.62±0.18 | 0.06±0.05 | 87.3±0.9 | |
| Hindlimb | 2.89±0.17 | 0.16±0.05 | 2.74±0.16 | 0.13±0.04 | 87.4±1.4 | |
| Dog (N=6) | Hindlimb | 5.9±0.5* | 0.6±0.1* | 5.3±0.4* | 0.1±0.0 | 87.2±0.7 |
Values are means ± S.E.M. *Significantly different from Weddell seal (P<0.05). Vv(mt,f), total volume density of mitochondria; Vv(ms,f), volume density of subsarcolemmal mitochondria; Vv(mi,f), volume density of interfibrillar mitochondria; Vv(li,f), volume density of intracellular lipid droplets; and Vv(my,f), volume density of myofibrils; all quantities expressed per fiber volume. Dog data was previously reported in Kanatous et al.,2001.