Imprecise excision of l(1)G0222e03639 and PBac{WH}f02390 generates a deletion in ppk23.
A high proportion of mutant males do not court females over a 10 minute observation time in a courtship assay under dark ("red light") conditions. For those mutant males that do court females, the courtship latency is increased and the courtship index is decreased compared to wild-type.
Compared to control males, mutant males are slower to initiate courtship of females, court less (assessed by frequency of wing extension) and copulate less. This defect is seen more strongly in courtship assays performed in the dark.
Mutant males show a slight increase in male-male courtship in assays performed under light conditions, but not in the dark.
ppk23Δ flies exhibit a wild-type water-elicited proboscis extension reflex.
