Fig. 4
From: Reproductive consequences of an extra long-term sperm storage organ
Offspring production over time. a Offspring production versus days post copulation for flies with two (filled circles, solid line) or three (open triangles, dashed line) spermathecae. The lines represent the least square regression lines for the predicted values for each female, conditional on the zero model (not shown), from the zero-inflated generalized linear mixed model. The data are jittered and dodged to better display overlapping values. b Model of zero offspring production versus days post copulation for flies with two (solid line) or three (dashed line) spermathecae. The shaded areas show 95% confidence intervals, with the darker shading simply due to overlap of the confidence intervals for the two groups. The solid circles show the data and represent many overlapping data points