Words similar to photoperiod

Example sentences for: photoperiod

How can you use “photoperiod” in a sentence? Here are some example sentences to help you improve your vocabulary:

A previous study on Siberian hamsters [ 30 ] reported a similar dissociation between endogenous timing of reproductive and nonreproductive responses to constant short photoperiod similar to the results in experiment 2. Siberian hamsters in constant short days, but not long days, underwent two cycles of a seasonal rhythm in testis size, but reproductive changes in the second cycle were not accompanied by a typical winter molt, and there was inconclusive evidence for a body weight rhythm [ 30 ] . However, the results of experiment 2 were not consistent between SD and INT treatments.
There was a significant interaction between measurement week and photoperiod treatment (P < 0.0001, F = 35.
In addition, adult F344 rats were tested for evidence of an endogenous rhythm of photoperiodic responses, by assessing whether mature rats that had become insensitive to short winter photoperiods would regain sensitivity in constant short photoperiod.
Without the LD group as a control, this kind of change attributable to an uncontrolled variable would have been impossible to distinguish from the effect of an endogenous timer controlling the response to photoperiod.
Here we report that adult F344 rats retain both reproductive and nonreproductive responses to short photoperiod, and that there is weak evidence for an endogenous circannual rhythm of reproductive responses to short photoperiod in F344 rats, but not such a rhythm for non-reproductive responses to short photoperiod.