Table 1.

Species . | Single axial fiber diameter (μm) . | Young's modulus (GPa) . | Stress at yield (MPa) . | Strain at yield . | Extensibility . | Ultimate strength (MPa) . | Toughness (J m^{−3})
. |
---|---|---|---|---|---|---|---|

Deinopis spinosa (N=5, n=27) | 1.03±0.10^{a} | 1.15±0.31^{a} | 55±23^{a} | 0.023±0.007^{a} | 0.73±0.14^{a} | 404±65^{a} | 92±19^{a} |

Hyptiotes cavatus (N=3, n=22) | 0.51±0.01^{b,c} | 7.04±0.37 | 121±5^{a} | 0.019±0.002^{a} | 0.44±0.04^{a,b} | 1439±15^{b} | 206±13^{b} |

Hyptiotes gertschi (N=2, n=24) | 0.78±0.11^{a,c} | 1.06±0.33^{a} | 129±113^{a} | 0.058±0.035^{a} | 0.41±0.04^{a,b} | 1171±227^{a,b} | 120±17^{a,b} |

Uloborus diversus (N=11, n=81) | 0.40±0.02^{b} | 1.05±0.33^{a} | 39±4^{a} | 0.026±0.001^{a} | 0.32±0.01^{b} | 1379±105^{b} | 118±11^{a,b} |

Species . | Single axial fiber diameter (μm) . | Young's modulus (GPa) . | Stress at yield (MPa) . | Strain at yield . | Extensibility . | Ultimate strength (MPa) . | Toughness (J m^{−3})
. |
---|---|---|---|---|---|---|---|

Deinopis spinosa (N=5, n=27) | 1.03±0.10^{a} | 1.15±0.31^{a} | 55±23^{a} | 0.023±0.007^{a} | 0.73±0.14^{a} | 404±65^{a} | 92±19^{a} |

Hyptiotes cavatus (N=3, n=22) | 0.51±0.01^{b,c} | 7.04±0.37 | 121±5^{a} | 0.019±0.002^{a} | 0.44±0.04^{a,b} | 1439±15^{b} | 206±13^{b} |

Hyptiotes gertschi (N=2, n=24) | 0.78±0.11^{a,c} | 1.06±0.33^{a} | 129±113^{a} | 0.058±0.035^{a} | 0.41±0.04^{a,b} | 1171±227^{a,b} | 120±17^{a,b} |

Uloborus diversus (N=11, n=81) | 0.40±0.02^{b} | 1.05±0.33^{a} | 39±4^{a} | 0.026±0.001^{a} | 0.32±0.01^{b} | 1379±105^{b} | 118±11^{a,b} |

All values are mean ± s.e.m.; *N* is the number of spiders for which silk was sampled. n is the total number of silk threads tested. s.e.m. was calculated using individual spiders (*N*) as the sampling unit.

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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