Table 2.
WT | ECMDistCut | ECMAntCut | Dp | ||||
---|---|---|---|---|---|---|---|
Tissue | blade | cell autonomous shear stress | 0.333 ± 0.003 | 0.316 ± 0.004 | |||
shear elastic modulus | 1 | ||||||
cell area contractility | 0.05 ± 0.03 | ||||||
area elastic modulus | 2.07 ± 0.09 | ||||||
area viscosity coefficient | 49 ± 2 | ||||||
hinge | cell autonomous shear stress | 0 | |||||
shear elastic modulus | 0 | ||||||
External links | blade | effective AP elastic constant | 0.5 ± 0.1 | 0 | 0.005 ± 0.007 | ||
effective PD elastic constant | 4.91 ± 0.04 | 5.3 ± 0.2 | |||||
friction coefficient | 21.3 ± 0.8 | 22.1 ± 0.6 | |||||
distal connections | – | Yes | No | Yes | No | ||
hinge | effective AP elastic constant | 67.8 ± 0.4 | 78 ± 2 | ||||
effective PD elastic constant | 9.50 ± 0.07 | 16.8 ± 0.6 | |||||
friction coefficient | 21.3 ± 0.8 | 22.1 ± 0.6 |
Cell autonomous shear stress in wing blade of WT and dumpyov1 are determined from circular laser cut experiments. Unperturbed and mechanically perturbed WT wings are first simultaneously fitted using results listed in Table 1. Then, the dumpyov1 wing is fitted keeping the values of hinge and blade tissue parameters the same as in WT. The effective anterior-posterior (AP) and PD elastic constants describe effects of external elastic elements providing resistance to changes in size of blade and hinge along the AP and PD direction. All quantities are normalized by the elastic shear modulus of the blade tissue K. Quantities containing spatial dimensions are also normalized by the initial length L0 of the WT wing. Uncertainties reported for the parameters in this table (expect for the cell autonomous shear stress ζxx) were determined by the fit. Note that they do not reflect uncertainties arising from approximations made in the rectangle model (supplement section 4) and from pre-processing of experimental data (supplement section 1.6).