ERG recordings from Opa1EY09863 homozygous mutant clones in the eye show no off-transient.
Heterozygotes show defects in mitochondrial morphology in the indirect flight muscles, with smaller than normal mitochondria being seen between the muscle fibers.
No effect on mitochondrial network morphology in the dorsolateral protocerebral posterior DA (dopaminergic) neuron cluster is seen in opa1-likeEY09863/+ animals.
opa1-likeEY09863 mitotic clones in the male germline (i.e. mutant spermatids) exhibit irregularly-shaped nebenkerns, composed of many individual mitochondria that have coalesced beside the nucleus, but have failed to fuse.