Effect of microwave radiation on stored product pest Ephestia kuehniella Zeller (Lepidoptera: Pyralidae) larvae

Abstract

This study was designed to examine the effects of microwave radiation exposure on Ephestia kuehniella (Zeller) (Lepidoptera: Pyralidae) larvae. One to two day old larvae were exposed to microwave radiation at the powers of 70, 150, 300 and 600 W for different exposure times (1-50 s). Mortality ratio in larvae increased significantly with increasing exposure time at all powers of microwave radiation. Completele mortality was achieved at the power of 70 W and the longest exposure time (50 s) Superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx) and malondialdehyde (MDA) in the larvae tissue were evaluated.. SOD, CAT, GPx activities decreased and MDA level increased in the microwave radiation-treated larvae tissue compared to control group at 300 and 600 W (P < 0.05). There was no significant DNA damage detectable at 70, 150 and 300 W for 50 s when compared with control group. However, 50 s of 600 W powers was showed effects on tail length and tail intensity indicating DNA damage.These results indicate that high powers of microwave radiation treatments cause some effects on the stored product pest E. kuehniella larvae.

Function of Ultraviolet Radiation (UV-B) Light on the Survival of Red Flour Beetle Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae) and their Body Fitness

“…Larval and pupal mortality significantly increased on all given treatments of UV-B light as contrast to control group. Same outcome also was found by (Faruki et al, 2005;Pandir and Guven, 2014;Guven et al, 2015;Ali et al, 2016) they reported that larval and pupal mortality was totally related with irradiation doses. Insects mortality ratio enhance with rising UV-B light time.…”

Potential Role of Mosquito Larvae <i>Culex Pipiens</i> as a Biological Indicator of Environmental Water Pollution in Egypt

“…Some studies used small mammalian species, living in or close to polluted areas for detection of hazardous pollution (Farbairn et al, 1995;Petras et al, 1995;Tice, 1995;Baker et al, 1996;Salagovic et al, 1996;Ralph et al, 1997;Silva et al, 2000). Also, comet assay has been applied to cells of insects, including Shistocerca gregaria, Drosophila melanogaster, Curculio sikkimensis, mosquito larvae, Ephestia kuehniella and in grasshoppers Chorthippus brunneus (Siddique et al, 2005;Todoriki et al, 2006;Augustyniak et al, 2006;Yousef et al;, Abdel-Gawad et al, 2011Isabel and Maria, 2014;Pandir and Guven, 2014).…”

The Influence of temperature and Microwave Radiation on The Lesser Grain Borer Rhyzopertha dominica (F.) (Coleoptera : Bostrychida).

“…However, exposure of Ephestia kuehniella Zeller larvae to microwave radiation at power of 70W for 50 sec. resulted in a complete mortality (Pandir and Guven, 2014). Moreover, Al-Akhdar et al (2019) recorded complete reduction in R. dominica adults after microwave exposure at medium power for 4 min.…”