Flies expressing aret^{Scer\UAS.P\T.T:Avic\GFP-m6} under the control of Scer\GAL4^{nos.UTR.T:Hsim\VP16} show significant defects during oogenesis, with females laying very few eggs or none at all. During oogenesis, each cyst contains 32 germline cells, compared to the 16 seen in wild type. These cysts typically become necrotic in the later stages of oogenesis. If a mature oocyte does form the phenotypes varies, ranging from close to wild type to dramatically defective. Over 85% of embryos are smaller than wild type, and eggs have shortened and irregular dorsal appendages which are frequently fused, suggesting that the eggshells are ventralised. A minor fraction of eggs have the spindle shape and absence of dorsal appendages that are characteristic of strongly ventralised embryos.