An Evaluation of the Role of Sensory Drive in the Evolution of Lake Malawi Cichlid Fishes
Figure 7
Change in the relative expression of the SWS gene group (SWS1, SWS2B, SWS2A) plotted using a weighted calculation through developmental time for Melanochromis johanni “black and white.” For this species, an increase in the weighted indicates a shift from SWS1 to SWS2B expression. Individuals reared under simulated sunlight exhibit little plasticity through development, while individuals reared under fluorescent lighting express more SWS2B over time. Also, there was much greater quantitative variation in SWS1/SWS2B expression in fish raised under fluorescent lighting.
