| Range |
speed 0.00012 sec: power output released 60,000 W/kg
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| Organism |
Spider (family Mecysmaucheniidae) Zearchaea sp. |
| Reference |
Mammola S, Michalik P, Hebets EA, Isaia M. Record breaking achievements by spiders and the scientists who study them. PeerJ. 2017 Oct 315:e3972. doi: 10.7717/peerj.3972 p.23 4th paragraphPubMed ID29104823
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| Primary Source |
Wood HM, Parkinson DY, Griswold CE, Gillespie RG, Elias DO. Repeated Evolution of Power-Amplified Predatory Strikes in Trap-Jaw Spiders. Curr Biol. 2016 Apr 25 26(8):1057-61. doi: 10.1016/j.cub.2016.02.029PubMed ID27068421
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| Method |
Primary source abstract: "Power amplification occurs when an organism produces a relatively high power output by releasing slowly stored energy almost instantaneously, resulting in movements that surpass the maximal power output of muscles… Analysis of high-speed video revealed that power-amplified mechanisms occur in some mecysmaucheniid species, with the fastest species being two orders of magnitude faster than the slowest species." |
| Comments |
P.23 4th paragraph: "Fastest predatory strike—Zearchaea sp. (Mecysmaucheniidae). The fastest predatory strike in spiders was documented for trap-jaw spiders (family Mecysmaucheniidae). This family currently comprises 25 described species of tiny ground-dwelling spiders distributed in New Zealand and southern South America. Trap-jaw spiders rely on active hunting to prey capture. By means of high-speed video calculations, Wood et al. (primary source) documented the speed of the power-amplified predatory strike in 14 species belonging to this family. The fastest was a species in the genus Zearchaea, capable of striking with a speed of 0.00012 s and releasing a power output of 60,000 W/kg (mean values of 3 recording events)." |
| Entered by |
Uri M |
| ID |
116209 |