Expression of Hsap\SGCDScer\UAS.cWa, under the control of Scer\GAL4tin.CΔ4 does not result in different cardiac dimensions or functions compared to controls. Flies expressing Hsap\SGCDScer\UAS.cWa, under the control of Scer\GAL4hs.PB, exhibit similar cardiac parameters as controls, before and after heat shock.