Dispersal rates of species of the Drosophila obscura group: implications for population structure.

Abstract

Results of a study of dispersal by Drosophila subobscura on the Adriatic island of Mljet are presented. All obscura group species so far studied have similar dispersal rates. If data from the previous studies are standardized to a trap line length of 200m, the mean squared distance traveled in one day is 1-2 X 104m2, and the average radial distance in one day is approx 100m. If extrapolated to longer trap lines, the average radial displacement per day is approx 310m/day for all species considered. -from Authors