Average velocity of stylet of nematocyst

Range 9.3-18.6 m/sec
Organism Cnidaria
Reference Nüchter T, Benoit M, Engel U, Ozbek S, Holstein TW. Nanosecond-scale kinetics of nematocyst discharge. Curr Biol. 2006 May 9 16(9):R316-8. p. R317 left columnPubMed ID16682335
Method Researchers mimicked the receptor potential triggering nematocyst discharge [ref 6 in article] by applying a short-step depolarization and analyzed discharge in >1200 instances with an electronic framing- streak camera (for details see Figure S1 in Supplemental Data). They resolved the ultra-fast phase of discharge by capturing an intermediate stage between the resting capsule and the fully ejected stylet at an exposure time of 200 ns and a framing rate of 1,430,000 fps.
Comments Analysis of the discharge revealed that the stylet tip travels a distance (s) of 13 µm within a time (t) of 0.7–1.4 µs at an average velocity (Vavg=s/t) of 9.3–18.6m/s. (see BNID 105575).
Entered by Uri M
ID 105580