Homozygous females have a shorter mean life span compared to heterozygous controls. The lifespan of mated homozygous females is significantly shorter than that of unmated homozygous females. The life span of twice mated homozygous females is significantly shorter than that of once mated homozygous females and the life span of these once mated homozygous females is significantly shorter than that of virgin homozygous females.
Spermatogenesis normal but mating behaviour fails because wild type females refuse to react to the courtship attempts of mutant males. Effect is not absolute, and depends on allele (there is a strong correlation between male sterility and severity of impairment in the female phenotype) and varies between affecting 6.7% (otu14) and 86.6% (otu12) of mutant males.
95% of homozygous ovarioles have quiescent oogonia.
Quiescent allele; homozygous and hemizygous ovarioles usually contain vitellaria that lack developing follicles, less than 8% of the oogonia are tumour-generating.
quiescent; ovarioles lack germ cells
otu6 has short lived | female phenotype, enhanceable by SPg.Yp1.hs
otu6 homozygous females that also express Acp70Ag.Yp1.hs have an extremely short life span, that is significantly lower than that of otu6 single homozygous females.
Engstrom.
Quiescent (QUI) class allele. The ovarian phenotype of flies transheterozygous for otu6 and a number of other otu mutations has been analysed.
Shows a dominant interaction with ovoD2 and ovoD3 : more extreme mutant phenotype as assayed by reduction in number of egg chambers at stage 10 or further developed. There is no apparent correlation with strength of otu allele and its interaction with the ovo alleles.