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LIGHT REACTIONS OF THE CILIATE Stentor coeruleus‐A THREE‐DIMENSIONAL ANALYSIS
Author(s) -
KuhnelKratz Christian,
Hader DonatP.
Publication year - 1994
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1994.tb05031.x
Subject(s) - phototaxis , ciliate , component (thermodynamics) , fluence , biological system , biology , biophysics , physics , optics , botany , ecology , thermodynamics , laser
A computer‐controlled three‐dimensional tracking and motion analysis system was developed to study the responses of Stentor coeruleus to short light pulses and to evaluate its distribution patterns. In addition to photokinesis and phototaxis, the step‐up photophobic response was analyzed, which includes a gravity‐controlled component at higher fluence rates and a light direction‐dependent component at lower fluence rates.