THE EFFECT OF DIFFERENT PROPORTIONS OF MALES AND FEMALES OVER THE CHRYSOMYA-ALBICEPS (WIEDEMANN 1819) (DIPTERA, CALLIPHORIDAE) BIOTIC POTENTIAL AND LONGEVITY UNDER LABORATORY CONDITIONS

Chrysomya albiceps specimens were derived from colonies kept under lab oratory conditions. The oviposition period total number of eggs-mass a nd the weight of the eggs-mass (average/female) presented significant differences between colonies regarding the sexual ratio of 1 male/1 fe male (situation I), when compared to the other ratios (1 male/3 female , situation II), (1 male/5 female, situation III), (3 male/1 female, s ituation IV) and (5 male/1 female, situation V). It was ascertained th at the increase in the proportion of females, resulted in higher weigh t and greater number of ovipositions and lenghtening of the period of oviposition, leads to a decrease in their lifespan.