Fig. 3

D. melanogaster females respond to their social environment by detecting the deposits left by other females, even in the absence of eggs. Two experiments were conducted: A Wildtype focal females were either isolated (‘isolation’), housed in groups of four (‘group’), housed with three OvoD1 females (‘eggless’) or housed in vials previously occupied by three OvoD1 females (‘deposits’); B wildtype focal females housed in isolation, in groups of four or in vials containing eggs laid by previous wildtype occupants (‘egg-spiked’). Fecundity was measured as the number of eggs laid by the focal female in the 24-h period following a single mating. Boxplots as in Fig. 1. Statistical significance values between isolation and other treatments were derived from model summaries