1964] Roth — Reproduction in Cockroaches 227 
DAYS AFTER PARTURITION 
Fig. 16. Effect of starvation and delayed exposure to males on receptivity 
of females following parturition in N. cinerea. A — Fed during gestation. 
B — Starved during gestation. The axis of abscissas indicates the days 
after parturition females were placed with males. Lined bars — fed after 
parturition. Stippled bars — starved after parturition. Numerals in circles 
within the bars = number of females used. Numerals opposite the bars 
— length of oocytes (mm.) ± standard errors of females that mated, 
measured at the time of, or <24 hr. after copulating; numerals in circles 
outside the bars = number of females whose oocytes were measured. 
Gestation period of all the females was 35 - 40 days. Females fed during 
gestation and those starved during gestation but fed after parturition were 
kept with males until they mated or oviposited. Females starved during 
gestation and after parturition were allowed up to 10 days after parturition 
to mate. 
slightly longer period taken for mated females to oviposit in these 
experiments probably indicates that the females that became receptive 
and mated had smaller oocytes than the unmated females at the 
time of parturition. 
L. maderae differs from N. cinerea in that starvation after partu- 
