(A) Morpholino knock-down of hcrt does not alter total sleep in surface fish, p=0.640, n = 34, while in cavefish total sleep time was significantly increased with hcrt knock-down, p=0.0002, n = 40; 2-way ANOVA, F(1,133)=45.82, p<0.0001 (B) Waking activity was not significantly altered in either surface fish (p=0.343, n = 34) or Pachón cavefish (p=0.084, n = 40; 2-way ANOVA, F(1, 133)=5.807). (C) Total number of sleep bouts in surface fish was not significantly different from injected controls, p=0.459, n = 34. While in Pachón cavefish, total sleep bouts over 24 hr was significantly increased in hcrt MO fish compared to control fish (p=0.0004, n = 40; 2-way ANOVA, F(1,133)=8.295, p=0.004). (D) Average sleep bout duration was not different between controls and hcrt MO injected surface fish (p=0.081, n = 34). There was a significant increase in average bout duration In Pachón hcrt MO injected fish compared to their respective controls (p=0.004, n = 40; 2-way ANOVA, F(1,133)=13.61, p=0.0003).
Figure 4—source data 1. Transient knockdown of hcrt increases sleep in 4 days post fertilization cavefish.This source file includes analysis comparing the effects of
hcrt morpholino treatment on sleep duration (
Figure 3A) waking activity (
Figure 3B), total number of sleep bouts (
Figure 3C), and average sleep bout duration (
Figure 3D).