Motor deficits include abnormal wing posture, rigidity, flight impairment and reduced climbing ability [31], [32], [34].
These data showed reduced climbing abilities in rt and tw mutants at almost all ages.
Reduced climbing ability was also observed in flies with ubiquitous expression of RNAi for the rt gene driven by Act5C-Gal4 (Fig. 2, Table 3).
Unexpectedly, the simw mtDNA significantly reduced climbing performance in the Aut nuclear background (Fig. 2C).
The simw mtDNA marginally reduced climbing ability in the OreR nuclear background, although the effect was not significant (P Wilcox>0.1, supplementary material Table S4).
Adult flies with RNA interference (RNAi) induced knockdown expression of Sin3A have reduced climbing ability; an activity that likely requires fully functional mitochondria.
The defective mitochondrial phenotypes observed in the ref(2 P mutants were reminiscent of pink1 mutant flies; these phenotypes included abnormal mitochondrial morphology in the indirect flight muscle, reduced climbing ability, reduced lifespan and mitochondria-linked abnormalities of the sperm cells.
Pre-treatment with TNJ (30 and 50%v/v) for 21 days also significantly [ F (3, 20 ) = 33.36; P <0.01] reduced climbing behaviour and total time spent on the wall of the cage in apomorphine-induced mice.
Anecdotally, it has been observed [ 73] that male baboons are markedly less active (e.g., reduced climbing, laying close to sugar-source) when their caloric intake was significantly increased through the availability of a sweetened beverage containing water, high fructose corn syrup, and artificial fruit flavoring [ 74].
This affects the output of the engines as well as aerodynamic capabilities, increasing the required runway distance and reducing climb performance.
