Mutant males show an increase in the total amount of cuticular hydrocarbons compared to control males. They show a significant decrease in the relative proportion of desaturated cuticular hydrocarbons and a significant increase in the relative proportions of both linear and methyl branched cuticular hydrocarbons compared to control males.
Mutant females show an increase in the total amount of cuticular hydrocarbons compared to control females. They show a significant decrease in the relative proportion of desaturated cuticular hydrocarbons and a significant increase in the relative proportion of linear cuticular hydrocarbons compared to control females.
Homozygous males show a normally high ability to discriminate between male and female control flies in a courtship assay, having a significantly higher courtship index towards females than towards males.
Homozygous males and females have defective cuticular hydrocarbon (CH) profiles (as measured by the desaturation index).