Stated to be a P{lwB} insertion about 100bp upstream of the TyrR gene. See FBrf0139901 and FBrf0126774 for further discussion of the molecular nature of the TyrRhono lesion.
Oct-TyrRhono larvae have a significant increase in the distance they crawl, relative to controls.
The enhancement of EJPs by octopamine is similar to that in wild type larvae. The inihibitory effect of EJPs by tyramine is completely eliminated.
The avoidance behaviour of TyrRhono flies in response to the repellents ethyl acetate, benzaldehyde and 4-methylcycrohexanol is impaired compared to wild-type flies. Locomotor activity of both males and females is normal and slightly increased compared to wild-type flies. The excitatory junctional potential of TyrRhono larval body wall muscles is not inhibited by 10-6M tyramine, in contrast to wild type.
Selected as: an olfactory behavioural mutant which is defective in responses to some repellents in a T-maze assay.
Reversion analysis shows that the P{lwB} insertion is responsible for the olfactory mutant phenotype.