Influência da radiação gama na oviposição e longevidade de Callosobruchus maculatus (Fabr., 1972) (Coleoptera, Bruchidae)

Abstract

Gamma radiotion influence on oviposition and Iongevity of Calosobruchus maculatus (Fabr., 1972) (Col. Bruchidae).

It was verified Calosobruchus maculatus  (Fabr.), a serious pest attacking seeds of  ,'ua sinensis, is highly susceptible ro gamma radiacion íor sterilizacion. A dosis of 5 krad causes che egg Lercility to decrease from 90% to only 1%. Adults irradiated with 10 krad become totaily infertile.
Doses of 10 krad and more cause an increase of abouc 19% in che longevity of females, but decreases the longevicy of males by abour 5%.
Also, irradiacion causes a decrease in che total number of eggs, inversely proporcional to the dosage increase.