Table 1.

Quasistatic material properties of silk spun by Argiope argentata compared to other araneid spiders

True values Engineering values
SilkYoung's modulus (GPa)Ultimate strength (MPa)Extensibility (mm/mm)Ultimate strength (MPa)Extensibility (mm/mm)Toughness (J cm-3)Source
Major ampullate (N=5, n=135)8.0±0.81495±650.205±0.0051217±560.228±0.007136±7This study
    Araneus sericatus (n=15)8.6±-880±-0.22±-710±-0.24±-106±-(Denny, 1976)
    Araneus diadematus (n=6)1.2±0.21154±140.33±0.02824±100.40±0.03194±-(Köhler and Vollrath, 1995)
    Araneus gemmoides (n=10)-4700±5000.23±0.05---(Stauffer et al., 1994)
    Argiope trifasciata (n=28)6.9±0.4--600±500.30±0.0290±10(Pérez-Rigueiro et al., 2001)
Tubuliform (N=4, n=29)11.6±2.1476±900.2857±0.015360±700.337±0.01995±17This study
    Araneus gemmoides (n=10)-2300±2000.19±0.02---(Stauffer et al., 1994)
    Araneus diadematus (n∼400)8.7±0.1--270±30.32±0.01-(Van Nimmen et al., 2005)
Minor ampullate (N=8, n=51)10.6±1.2923±1540.330±0.033669±1130.401±0.047137±22This study
    Argiope trifasciata (n=11)8.9±0.5--483±340.556±0.04150±12(Hayashi et al., 2004)
    Araneus gemmoides (n=10)-1400±1000.22±0.07---(Stauffer et al., 1994)
    Araneus diadematus (n=55)----0.34±--(Work, 1977)
Aciniform (N=6, n=28)10.4±1.41052±1200.404±0.024636±780.505±0.039230±31This study
    Argiope trifasciata (n=10)9.8±1.1--687±560.83±0.06376±39(Hayashi et al., 2004)
Capture spiral (N=5, n=87)0.001±0.0001534±401.72±0.0595±94.65±0.2675±6This study
    Araneus sericatus (n=41)-1270±451.19±0.05296±103.29±0.32150±9(Denny, 1976)
    Araneus diadematus (n=6)-1338+801.75±0.15233±144.75±0.16283±18(Köhler and Vollrath, 1995)
  • All values are means ± s.e.m. For data from this study, s.e.m. was calculated using individual spiders (N) as the sampling unit, while values from most of the other studies utilized the total number of fibers tested (n). —, data were not obtained.