P{lacW} insertion within 50bp of the putative transcriptional start site.
Heterozygous females and males do not show an extended lifespan (after correction for genetic and cytoplasmic background effects).
.Homozygous mutants are long lived, but have normal metabolic rates and flight velocity. Mutant flies have higher fecundity than wild-type early in life when fed on high quality food, also having a higher total life-time egg production. When on low-calorie food though fecundity is significantly decreased.
Heterozygotes show an increase in mean life-span to 69 days (compared to 37 days for controls) at 25oC, an extension in mean life-span of 87%. Extension of 1% maximal life-span is greater than 45%. At 18oC, the increase in mean life-span in mutants approaches 100% and the increase in 1% maximum life-span approaches 50% compared to controls. Heterozygous males and females are normal or superior in fertility and fecundity. Heterozygous females show the same early peak of egg laying and fertility as control females but sustain the ability to produce larger numbers of offspring for a longer period of time.
Indy302/Indy[+], Scer\GAL4DJ651 is a suppressor of short lived phenotype of Ctet\tetXTNT-LC.UAS, Scer\GAL4DJ651
The reduced lifespan seen in males expressing Ctet\TeTxLCTNT.Scer\UAS under the control of Scer\GAL4DJ651 can be increased if the males also carry Indy302/+. Only a small increase in lifespan is seen in females expressing Ctet\TeTxLCTNT.Scer\UAS under the control of Scer\GAL4DJ651 and carrying Indy302/+.
The reduced lifespan seen in males expressing Ctet\TeTxLCTNT.Scer\UAS under the control of Scer\GAL4DJ651 can be increased if the males also carry Indy302/+. The reduced lifespan seen in females expressing Ctet\TeTxLCTNT.Scer\UAS under the control of Scer\GAL4DJ651 is only slightly increased by Indy302 heterozygosity.
Excision of the P{lacW} element can revert the increased life-span phenotype.