Sentences with phrase «dark photoperiods»
They were maintained in -LRB--RRB- tanks with no more than 20 fish per tank under a 12 hours light / 12 hours dark photoperiod [40].
http://journals.plos.org/ Not exact matches
Finally, there are modest effects on daily patterns of behavior; while overexpression of Bmal1 in the skeletal muscle does not affect the timing or intensity of daily rhythms of wheel running, overexpression of Bmal1 does lead to an increase in general locomotor activity, particularly at the light - dark transitions and middle of each photoperiod.
Adapted to cold, dark and nutrient - poor environments, below ice and snow, the charr's activity rhythms reflect the above - surface daily photoperiod.