The expression of Ctr9HMS00619 under the control of Scer\GAL4da.PU leads to lethality; expression under the control of Scer\GAL4nos.UTR.T:Hsim\VP16 leads to the progressive loss of germline cells from the germarium, starting two weeks after eclosion, the nuclei of which exhibit severe morphological defects and polyploidy, as compared to controls.