E. Lebourg et al., SPONTANEOUS LOCOMOTOR-ACTIVITY OF DROSOPHILA-MELANOGASTER FLIES AT VARIOUS GRAVITY LEVELS (0 G, 1 G, 1.8 G) DURING PARABOLIC FLIGHTS, Behavioural processes, 34(2), 1995, pp. 175-184
The spontaneous locomotor activity of young, middle-aged and old Droso
phila melanogaster of both sexes has been videorecorded during three p
arabolic flights separated by one-day intervals. Fast shifts between 0
g, 1 g and 1.8 g phases are obtained during parabolic flights. Result
s showed that the activity scores were higher at 0 g during the first
flight, but that this effect of microgravity was erased during the two
next flights. It may be concluded that flies showed a transient form
of reactivity to a new environment, i.e, to repeated rapid variations
of gravity levels.