Biological studies on potato tuber moth phthorimaea operculella zeiier (lepidoptera : gelechiidae)‎ under different temperatures

الملخص EN

Studies on the biology of Potato tuber moth (PTM) Phthorimaea operculelIa Zeller reared in an indoor rearing room at 25 ± 2°C and 70 ± 5 % RH revealed that the duration of egg, larval and pupil stages were 1.9 ± 17.4 , 1.39 ± 5.8 and 10.6 ± 0.9 days, respectively.

Longevity of adults was 37.5 ± 11.2 and 18.2 ± 6.4 days for male and female, respectively.

The pre-oviposit ion, oviposit ion and post-oviposit ion periods averaged 2.3 ± 4.0 ± 8.3 ± 0.5 and 5.8 ± 4.6 days, respectively.

Female fecundity was found to be 161.9 ± 48.8 eggs and the fertility was 91.9 ± 3.3 %.

The generation period lasted 34.0 ± 2.4 days under the same conditions.

Statistical analysis indicated that temperatures of 20, 25 and 30 ± 1°C had significant effects on the studied aspects of the biology of PTM studied viz.

the pre-oviposit ion, oviposit ion and post-oviposit ion periods, longevity, fecundity and fertility (%).

The duration of one generation was 52.0 ± 4.2, 35.2 ± 2.3 and 20.3 ± 0.5 days at 20, 25 and 30 ± 1°C, respectively, at the RH of 75 %..