Studies on the reaction to light of Chilodonella steini (Blochmann, 1895) Cyrtophorida.
The effect of polychromatic and monochromatic light on the behaviour of Chilodenella steini cells is described. Negative phototaxis is observed when the cells are subjected to red light (640-660 nm), but positive phototaxis reaction when subjected to yellow light (570-590 nm). The occurrence of two different reactions points to the existence of two kinds of photoreceptor substances.
D000818:Animals; D016798:Ciliophora / Q000502:physiology / Q000528:radiation effects*; D008027:Light; D009068:Movement / Q000528:radiation effects