A flight performance test to see how the flies are behaving while flying. They have a slightly lower flight duration compared to the genetic controls but nothing that should impair them in the experiment.

The learning experiments are ongoing. I am doing n=15 for each line and each experiment, both Composite Control and also a Isolated Operant experiment. The Composite control experiment is done but I only got 13 flies for Isolated Operant. I do not want to preanalyze the data and will therefor post it when all the flies are done.

MB077B

Adult ventral nerve cord

The experiments in the flight simulator. Self-learning performance indices in a two-minute test with the heat switched off after 4 and 8 minutes of training, indicated impairment of 17d-TNT flies.

The flies also showed clear impairments in their flight performance. To quantify this I assessed both possible alterations in their motor coordination (using climbing assay) as well as flight performance. The climbing assay relies on walking rather than flying. Both experiments show reduced ability of motor coordination and flight performance.

To confirm the specificity of the 17d-Gal4 fly I used the trans-tango flies.

Neuron, 96 (2017) 783-799. doi:10.1016/j.neuron.2017.10.011

The trans-tango is notorious for having a low expression in adult flies, which was also observed by me. The image is taking without any GFP-antibody.

The experiment was done as a pilot experiment before doing a larger scale.

The data is a bit inconsistent but shows a positive and reassuring numerical difference. The control is a bit lower than expected, compared to WTB flies (showing usually a PI 0f 0.6). The flies have a slightly different background than wtb flies and have pale orange eyes (still no apparent impairments in vision). Further experiments will be conducted before proceeding with a larger sample size of the flies.

Positive Control: Gr28bd-G4, TrpA1-G4

Parameters: Light: intensity (500 Lux side, 1000 Lux bottom); frequency = 20Hz; Delay = 1 ms; Duration = 9.9 ms; volts = 6.4

Red lines: completed

mb025b: not selected against tubby