Expression of Csp1.Scer\UAS under the control of Scer\GAL4elav-C155 in a wild-type background has no significant effect on evoked excitatory junction potential amplitude at the neuromuscular junction in larvae. Features of spontaneous release are also normal in these larvae. The lethality caused by expression of Csp1.Scer\UAS under the control of Scer\GAL4elav-C155 or Scer\GAL4hs.PB is more severe in male than in female flies. Adult escapers carrying Csp1.Scer\UAS expressed under the control of Scer\GAL4elav-C155 have a short life span, dying within the first 5 days of adulthood at 25oC. The flies are extremely sluggish, show severely uncoordinated movements, and slip frequently. Body size is severely reduced and wing inflation is impaired, so that the wings appear severely crumpled. The regular ommatidial pattern is disrupted so that the eye appears rough. The eye is slightly elliptical in shape and some bristles are lost. Fusion of several ommatidial units is occasionally seen.
Scer\GAL4elav-C155/Csp1.UAS partially rescues CspR1
Expression of Csp1.Scer\UAS under the control of Scer\GAL4elav-C155 has no effect on spontaneous miniature excitatory junction potentials at the neuromuscular junction of CspR1 third instar larvae, but does rescue the evoked excitatory junction potential at the neuromuscular junction.