تأثير أصناف من البذور الزيتية في بعض المعطيات الحياتية للدورين اليرقي و البالغ في خنفساء الحبوب الشعرية Trogoderma granarium (Everts)‎ (Coleoptera : Dermestidae)‎

Abstract EN

The effect of hairy grain beetles larvae fed on nine varieties of oil seeds on some biosogical parameters of larvae and adult stages was studied at 32+1/c and relative humiditj from 40 to 50%.

Results indicated that the higher averages of larval durations were 82.8 and 53.4 days were recorded lor larvae fed on safflower seeds (Al-mays) and sunflower seed (Peridovik), the higher average of instar number of these larvae were 8.0 and 6.0 instars.

When larvae fed on sunflower seeds (local variety), the higher percentage of larvae mortality were 44.0 % and 64.0 % when larvae fed on sunflower seeds , local and pendvik varieties.

The lowest average of larvae durations were 30.8 and 27.0 days when larvae fed on corn seeds (Talar) and Res.

106.

varieties.

The lowest averages of instars number were 5.4 and 4.0 instars when larvae fed on corn seeds (Res.

106 variety) while the lowest average of larvae mortality was 8.0 A when larvae fed on Talar variety.

.

The results also showed that the highest averages of male and female duration were 6.8, 5.2 and 7.8, 6.4 days, when Harvae fed on safflower seeds (Al-Sina’ a and M-Mays varieties) and sunflower seeds (Peridovik and local varieties).

The higher durations of life cycle were 90.8 and 82.8 days which recorded when larvae fed on safflower seeds (Al-Mavs) while the highest numbers of egg laying were 22.2 and 25.8 eggs when larvae fed on corn seeds (Res.

106).

The lowest average of male and female duration, life cycle and egg no.

laid at temperature or 32+l°c and 38+1 °c were 3.6, 3.2 and 6.2, 4.0 days, 58.8, 49.6 ciays and 8.8, 9.8 eggs, respectively.