FlyBase curator comment: this entry is used to capture phenotypic information when the particular allele (or allele combination) used by the author could not be determined but the context of the experiment suggests that the phenotype being described is some kind of loss of function.
Dbip\seunspecified male flies are less successful in mating compared to wild-type flies and show diminished sexual activity. The mutation has no effect on the receptivity of the female.