Example sentences for: photoperiods

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

  • These results have implications for studies on F344 and other photoperiodic strains of rats, particularly because the F344 rat is widely studied throughout the world, and has been the most commonly used inbred rat strain in the United States [ 32 ] . The existence of both reproductive and nonreproductive responses of adult F344 rats to short photoperiod, and the possibility for weak endogenous circannual responses to short photoperiods could complicate the design and interpretation of experimental results, especially in the case of long-term studies.

  • If they have such an endogenous rhythm, we predicted that F344 rats treated from weaning with a constant short photoperiod or an intermediate photoperiod (L12:D12; INT) would exhibit an initial decrease in testis size, body weight, or food intake, followed by a refractory period with no differences relative to a control group in long photoperiod, and then a second period of sensitivity to shorter photoperiods, again relative to a control group in long photoperiod.

  • 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.

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