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Table 2.

Comparison of the energy absorption of capture threads pre- and post-failure of the axial fibers

SpeciesAxial extensibilityTotal extensibility% work by cribellar fibrils
Deinopis spinosa (N=5) 0.73±0.14a 1.81±0.13 92±1a 
Hyptiotes cavatus (N=3) 0.44±0.04a,b 0.78±0.13a 36±12b 
Hyptiotes gertschi (N=2) 0.41±0.04a,b 0.63±0.09a 24±15b 
Uloborus diversus (N=11) 0.32±0.01b 0.95±0.08a 71±4a 
SpeciesAxial extensibilityTotal extensibility% work by cribellar fibrils
Deinopis spinosa (N=5) 0.73±0.14a 1.81±0.13 92±1a 
Hyptiotes cavatus (N=3) 0.44±0.04a,b 0.78±0.13a 36±12b 
Hyptiotes gertschi (N=2) 0.41±0.04a,b 0.63±0.09a 24±15b 
Uloborus diversus (N=11) 0.32±0.01b 0.95±0.08a 71±4a 

% work by cribellar fibrils compares the area under the force displacement curve post failure of the axial fiber to the area under the total force-displacement curve.

All values are mean ± s.e.m.; Nxs is the number of spiders for which silk was sampled.

Values that share superscripts within a column indicate lack of significant pairwise differences using Tukey's Honest Significant Difference tests at P<0.05.

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