Irradiance dependency of UV-A induced phase shifts in the locomotor activity rhythm of the field mouse Mus booduga.
In the nocturnal field mouse Mus booduga, the responsiveness of the circadian system to UV-A light of 2.5 W/m2 and 30 minutes duration is known to be phase dependent. The results of our experiments indicate that the phase shifts evoked by UV-A at the two phases, CT14 (circadian time 14) and CT20 increases nonlinearly with irradiance.
Sharma
V K
VK
Chronobiology Laboratory, Evolutionary and Organismal Biology Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore, Karnataka, India. vsharma@jncasr.ac.in
Chidambaram
R
R
Singh
T J
TJ
Lingakumar
K
K
Subbaraj
R
R
Chandrashekaran
M K
MK
D000818:Animals; D002940:Circadian Rhythm / Q000528:radiation effects*; D004307:Dose-Response Relationship, Radiation; D008297:Male; D051379:Mice / Q000502:physiology*; D009043:Motor Activity / Q000528:radiation effects*; D017440:Photoperiod; D014466:Ultraviolet Rays