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The effect of microwave on different stages of fig moth, Ephestia cautella )Walk) Lepidoptera:Pyralidae ) in stored date) | ||
| Jornal of Biotechnology Research Center | ||
| Article 1, Volume 9, Issue 1, 2015, Pages 52-57 | ||
| Authors | ||
| Falah H. Naher; Mohammed Z. Khalaf; Hussain F. Alrubeai | ||
| Abstract | ||
| Eggs, larvae, pupa and adults of date moth Ephestia cautella were exposed to three levels of microwave power 600, 800 and 1000 W at different exposure time (0,6,8,10,12,14,16,18,20 and 20 second). The results showed that microwave had high ability to kill different stages of fig moth. The effect increased by increasing of microwaves power and exposure time. The percentage of egg mortality was %100 at 600 and 800 W, and exposure time. Similarly, egg mortality was also increased at 1000 W in less than 12 sec. The highest motility of larvae was %90 at 600 W and %96.67 at 800 W, when the exposure time was 10 sec., while, the mortality was %100 at 1000 W and 18 sec. male and female pupal mortality rates was %100 at 800 W, when the exposure times were 20 and 18 sec., respectively. The ranges of lethal time of %50 and %95 ( LT 50 , LT 95 ) at 600-1000 W were 501-9.9 and 15.7 – 34.2 , 3.0-7.5 and 9.0-50.0and 3.2-4.8 and 7.9-39.1 for egg , larvae and pupae, respectively. However, the results showed that all adult treatments significantly affected age average and emergence of adult male and female. The age of emerged males and females did not exceeded 4.267 and 5.267 days respectively, at 600 W and 6 sec. exposure. While, adult emergence stopped at 800 W and 14 and 16 sec. for male and female pupae respectively. The results of this investigation indicated the affectivity of using microwaves technique and further research efforts is needed before the feasibility microwave technique can be evaluated as alternative in stored dates chemical method using Methyl Bromide. | ||
| Keywords | ||
| microwaves; fig moth; Ephestia cautella | ||
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