STERILIZATION AND REDUCED FERTILITY AND EGG-LAYING
When third- and fourth-instar larvae were put into water containing 10 ppm aphoxide, resulting males were completely sterile and females nearly so.
Crosses
with untreated adults produced the normal number of eggs, but hatching was less than 16% (Weidhaas, 1962). Tepa deposits produced sterility in adults, 340 ,ug/ft2 (3660 p.g/m2), 172 p,g/ft2 (1851 ,ug/m2) resulting in 89% and 36% sterile egg batches respectively (Dame & Ford, 1964).