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Table 1.

Summary of average dragline material properties

PropertyA. diadematusS. scenicus
Yield strain 0.033±0.002* (20) 0.049±0.009* (5) 
Yield stress (GPa) 0.392±0.07** (12) 0.77±0.09** (4) 
Breaking strain 0.249±0.010 (20) 0.252±0.026 (6) 
Breaking stress (GPa) 1.11±0.08 (12) 1.19±0.25 (4) 
Initial modulus (GPa) 10.6±1.0** (12) 15.7±0.2** (4) 
Scaling exponent of breaking force 0.786±0.027 (33) 0.660±0.130 (6) 
PropertyA. diadematusS. scenicus
Yield strain 0.033±0.002* (20) 0.049±0.009* (5) 
Yield stress (GPa) 0.392±0.07** (12) 0.77±0.09** (4) 
Breaking strain 0.249±0.010 (20) 0.252±0.026 (6) 
Breaking stress (GPa) 1.11±0.08 (12) 1.19±0.25 (4) 
Initial modulus (GPa) 10.6±1.0** (12) 15.7±0.2** (4) 
Scaling exponent of breaking force 0.786±0.027 (33) 0.660±0.130 (6) 

Two-tailed t-tests were used to identify significant differences between the two species (*P=0.025, **P=0.04, ***P=0.034). Values are means ± s.e.m. (N)

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