Crustacean Circadian Research

Tidal and Circadian Rhythms of Locomotion in Limulus
 

Figure 3: The effect of photoperiod on activity levels of Limulus. There was an overall effect of photoperiod on overall activity levels (F(5,3)=7.96, p<0.003). X+/-SEM.Means with different letters, significant at the p<0.05 level.