تأثير الافلاتوكسينB2,B1 في نسب الهلاك المئوية ليرقات وعذارى حشرة خنفساء الطحين الصدئية Triboliumcastaneum (Herbst) (Coleoptera : tenebrionidae)

Abstract

1 - The effect of aflatoxin B1 and B2 on larvae mortality was different according to the concentration and the type of the toxin. The highest mortality percentage in feeding larvae on treated grains with the two types of toxin was 32.69% and 24.44 % with aflatoxin B1 and B2 in the first generation and 21.75 % and 32.99 % in the second generation respectively .According to concentrations, the highest mortality percentages was by the 1ppm concentration were 28.57 and 27.37 in the first and second generation respectively Compared with control at a percentages of 5.66 % and 3.66 in second generation respectively.2 - For pupil stage the average of mortality percentages was 37.22 % ,61.93 % with aflatoxin B1 and B2 in first generation and 26.3% and 51.30% in the second generation respectively . According to concentrations the highest mortality percentages caused by 1ppm where the 49.57 and 38.8 in the first and second generation respectively Comparing to control which was 3.33 and 2.66 respectively