Expression of Acp62FScer\UAS.cLa under the control of Scer\GAL4hs.PB, using heat shock, results in a decrease in the percentage of eggs that develop to adulthood, when a single heat shock is applied during the L1 (day 1), L2 (day 2), L3 (day 3 or 4) or pupal stage (day 5, 6, 7 or 9). A reduction in survival to adulthood is also seen even in the absence of heat shock in these animals. Expression of Acp62FScer\UAS.cLa under the control of Scer\GAL4hs.PB in adult females using heat shock does not affect viability if the heat shock is applied only once. However, a significant decrease in viability is seen upon repeated heat shocks given every other day.