Table 4.
Species/Solution | n | Pmax | fmax | n | r2 | r3 | r4 |
---|---|---|---|---|---|---|---|
Dros/Swank | 12 | 254 ± 18DR LS | 162.5 ± 8.9DR LS LR | 12 | 1,423 ± 53LS LR | 1,370 ± 49LS LR | 139 ± 75DR LS LR |
Leth/Swank | 10 | 133 ± 13DS LR | 18.5 ± 1.5DR LR | 10 | 153 ± 11DS DR | 151 ± 12DS DR | 53 ± 7LS DR LR |
Dros/Reedy | 10 | 141 ± 18DS LR | 94.5 ± 3.9DS LS LR | 10 | 1,343 ± 98LS LR | 1,285 ± 98LS LR | 101 ± 70LS LR |
Leth/Reedy | 10 | 325 ± 53DR LS | 28.5 ± 2.9DS LS | 8 | 177 ± 18DS DR | 142 ± 15DS DR | 4 ± 3DS LS DR |
All values are means ± SE. Power was measured under small amplitude conditions, 0.125% muscle length; fmax is the frequency at which maximum power was produced. The rates of phase 2, 3, and 4, r2, r3, and r4, respectively, of the tension transients following stretch are shown. Superscript letters indicate statistical differences between the four sets of fibers based on one-way ANOVA with Holm-Sidak pairwise multiple comparisons, P < 0.05. DS = Drosophila fibers bathed in Swank solutions; DR = Drosophila fibers bathed in Reedy solutions; LS = Lethocerus fibers bathed in Swank solutions; LR = Lethocerus fibers bathed in Reedy solutions.