painGAL4/painEP2462 trans-heterozygous flies exhibit strong male-male courtship behavior.
Mutant larvae do not show the cardiac pauses during motion which are seen in wild-type larvae.
Basal cardiac activity (measured in anaesthetised animals) is increased in heterozygous larvae compared to wild-type controls.
Contractility of the heart tube is reduced in heterozygous larvae compared to wild-type controls.
Semi-dissected heart tubes in which local pressure is applied to segment A6 do not show cardiac arrest after the pressure is applied, in contrast to wild-type heart tubes, which under these conditions undergo cardiac arrest of an average duration of 25.8 +/- 1.6 seconds.
The cardiac rhythm of semi-dissected heart tubes is not modified by hypo-osmotic shock (in contrast to wild-type).
painEP2462 is rescued by painUAS.cSa/Scer\GAL4unspecified
painEP2462 is rescued by painUAS.cSa/Scer\GAL4NP1029
Expression of painScer\UAS.cSa in the heart under the control of Scer\GAL4unspecified rescues cardiac pauses during motion in painEP2462 mutant larvae.
Expression of painScer\UAS.cSa under the control of Scer\GAL4NP1029 restores basal cardiac activity to wild-type levels in painEP2462 mutant larvae.