title: Spontaneous locomotor activity of Drosophila melanogaster flies at various gravity levels (0 g, 1 g, 1.8 g) during parabolic flights.
abstract: The spontaneous locomotor activity of young, middle-aged and old Drosophila melanogaster of both sexes has been videorecorded during three parabolic flights separated by one-day intervals. Fast shifts between 0 g, 1 g and 1.8 g phases are obtained during parabolic flights. Results 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.
authors.affiliation: Laboratoire d'Ethologie et Psychologie Animale, U.R.A. C.N.R.S. no1837, Université Paul Sabatier, 118 route de Narbonne, F-31062 Toulouse cédex, France.
authors.forename: E
authors.initials: E
authors.lastname: Le Bourg
authors.affiliation: Laboratoire d'Ethologie et Psychologie Animale, U.R.A. C.N.R.S. no1837, Université Paul Sabatier, 118 route de Narbonne, F-31062 Toulouse cédex, France.
authors.forename: A
authors.initials: A
authors.lastname: Grimal
authors.affiliation: Laboratoire d'Ethologie et Psychologie Animale, U.R.A. C.N.R.S. no1837, Université Paul Sabatier, 118 route de Narbonne, F-31062 Toulouse cédex, France.
authors.forename: N
authors.initials: N
authors.lastname: Fresquet
authors.affiliation: Laboratoire de Génétique, Université Catholique de Louvain, Place Croix du Sud, 2, B-1348 Louvain-La-Neuve, Belgium.
authors.forename: F A
authors.initials: FA
authors.lastname: Lints