Note to the paper of Dr. W. F.Harris

Abstract

Dr. HARRIS'S contention is correct. Our observations (MusslLL and JAROSCH 1972) may be interpreted also in accordance with the concept of bending waves: True helical bending waves that move from the base to the tip of the flagellum would cause two related mechanic effects, a rotation and a shifting of flagellum and body. When the flagellum is mechanically prevented, the progressive motion of the true waves may be compensated by the progressive motion of the apparent waves which arise by the rotation of the flagellumhelix in the direction from the tip to the base. Thus only the rotational component would appear as a rotation of the body on the same place. It is remarkable in this connexion that not only rotating helical fibrils show apparent waves, but also true helical waves (if they exist) would cause rotations. This situation is not very delightful for the explanation of movements and reminds us a little of the question: what was the first--the hen or the egg? Nevertheless our movies show very distinctly the rotation of quite rigid flagella. An activity along the whole flagellum would cause more irregularities in the flagellar shape and motion. The body may rotate also when the resting flagellum shows a loop, and there is also some other evidence for true rotations of the flagella (see DOETSCI-I and HAGEAGE 1968, p. 432, JAROSCH 1972). R. JAI~OSCH, Salzburg

DOI: 10.1007/BF01275725

Cite this paper

@article{Jarosch2005NoteTT, title={Note to the paper of Dr. W. F.Harris}, author={Robert Jarosch}, journal={Protoplasma}, year={2005}, volume={77}, pages={481-481} }