PERCENT FEMALES 
1964] 
Roth — Reproduction in Cockroaches 
213 
Fig. 9. Relationship between receptivity and size of oocytes following 
parturition in N. cinerea. Top: Females exposed to males from time of 
parturition and given <24 hr. to mate. Oocytes measured within 24 hr. 
after parturition (27 ± 1° C.). Bottom: Oocytes measured at the time 
of parturition or <24 hr. after the females had given birth. Females 
maintained during gestation at 2 different room conditions. (Numbers in 
circles in top and bottom histograms indicate the numbers of insects used 
for each group). 
