R. Marangoni et al., TEMPERATURE EFFECTS ON MOTION PARAMETERS AND THE PHOTOTACTIC REACTIONOF THE MARINE CILIATE FABREA-SALINA, Journal of photochemistry and photobiology.B, Biology, 30(2-3), 1995, pp. 123-127
Fabrea salina, a marine ciliate belonging to the order Heterotrichida,
shows positive phototaxis and photophobic step-down reactions. In thi
s work, we have investigated the effect of temperature on the motion p
arameters and the phototactic reaction. In the temperature range inves
tigated, there is a quasi-linear increase in speed with temperature. I
n addition, the positive phototactic reaction is enhanced by an increa
se in temperature. These results are discussed on the basis of possibl
e physical and physiological mechanisms.