Sodium tetraborate effects on mortality and reproduction of Anastrepha suspensa (Diptera : Tephritidae)

When flies were treated with 0 - 0.5% sodium tetraborate by feeding for 24 h, mortality in treatments was not different from controls. Fecundity and f ertility were reduced by 0.5% sodium tetraborate. When flies were fed for 4 8 h, mortality of both males and females increased in the 0.5% sodium tetra borate treatment; oviposition was eliminated for 20 d after treatment. When treatment was extended to 168 h, 0.1% sodium tetraborate caused increased mortality and decreased fecundity and fertility. Fed for 168 h, 0.2 and 0.5 % sodium tetraborate killed almost all flies within the 7-d treatment. Ovip osition of survivors in 0.1 and 0.2% sodium tetraborate treatments was arre sted for 20 d after treatment.