Photoresponse in the Ciliated Protozoan Colpoda cucullus
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RIS BIB ENDNOTEPhotoresponse in the Ciliated Protozoan Colpoda cucullus
Publication date: 22.09.2017
Acta Protozoologica, 2017, Volume 56, Issue 1, pp. 1 - 7
https://doi.org/10.4467/16890027AP.17.001.6965Authors
Photoresponse in the Ciliated Protozoan Colpoda cucullus
We found that vegetative cells of Colpoda cucullus Nag-1 accumulated in shaded areas of a container when grown in the laboratory and then formed resting cysts. The photodispersal (negative photoaccumulation) of C. cucullus was mediated, at least in part, by a difference in forward swimming velocity between the illuminated region and the shaded area of the Petri dish (motion slowed or stopped in the shaded area). When C. cucullus was stimulated by continuous light irradiation, the forward swimming velocity increased and reached a steady state within 10 s. When the light intensity decreased, the forward swimming velocity gradually decreased, and eventually returned to its original level for approximately 1 min. The action spectrum of the photokinetic response (steady-state swimming acceleration driven by continuous light stimulation) implies the involvement of blue light receptors.
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Information: Acta Protozoologica, 2017, Volume 56, Issue 1, pp. 1 - 7
Article type: Original article
Department of Biological Science, Faculty of Science, Kochi University, Kochi, Japan
Department of Biological Science, Faculty of Science, Kochi University, Kochi, Japan
Department of Biological Science, Faculty of Science, Kochi University, Kochi, Japan
Laboratory of Environmental Physiology, Faculty of Education, Kochi University, Kochi, Japan
Oncology Pathology, Department of Pathology and Host-Defense, Faculty of Medicine, Kagawa University, Takamatsu 761-0793, Japan
Kochi Rehabilitation Institute, Tosa, Kochi, Japan
Department of Biological Science, Faculty of Science, Kochi University, Kochi, Japan
Published at: 22.09.2017
Article status: Open
Licence: CC BY-NC-ND
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