| Fig VI-6. | Flight activity of males and females Natural logarithms of ratio V of the percentages males and females with flight activity in laboratory experiments | ||
| ln(V) = ln( | % males with flight activity % females with flight activity | ) | |
| experiments in 1976 | |||
| experiments in 1977 | ||
| experiments in 1978 | ||
| o = | experiments in 1979 | ||
| * = | experiments in 1980 | ||