nompC³/nompC^f00642 and nompC¹/nompC^f00642 mutant adult females have no difference in preference for softer plain, or 100 mM sucrose-containing, agarose for egg laying, compared to controls.

nompC^f00642/nompC^f00642, nompC¹/nompC^f00642 and nompC³/nompC^f00642 starved adult males have significantly reduced preference for softer sucrose-containing agarose, compared to controls; transheterozygotes do not have significant alterations in exploratory behavior or sucrose preference, compared to controls; nompC^f00642/nompC^f00642 homozygotes have significantly reduced sucrose preference, but no alteration in exploratory behavior, compared to controls.

nompC^f00642/nompC^f00642 adults do not have significant reductions in activity (spiking) of the L2 or L3 labellar sensilla in response to mechanical or sucrose stimulation, compared to controls; nompC¹/nompC^f00642 adults have significant reductions in activity (spiking) of the L2 and L3 labellar sensilla in response to mechanical or sucrose stimulation, compared to controls; nompC³/nompC^f00642 adults have significant reductions in activity (spiking) of the L2 and L3 labellar sensilla in response to sucrose stimulation and significant reductions in activity (spiking) of the L3, but not L2, labellar sensilla in response to mechanical stimulation, compared to controls.

nompC^f00642 mutant adults do not show any defects in sensing food hardness and like the wild-type flies prefer softer food with lower sugar content (0.5mM sucrose, 0.2% agarose) to a hard food with higher sugar content (1mM sucrose, 2% agarose) in a binary choice assay.

nompC^f00642 mutants behave like wild-type controls regarding negative geotaxis behaviour.

Compared with wild-type, nompC^f00642 mutants display greatly reduced sound-evoked antennal response.