Ghoneim, K., Kh., H., M., T., D., E. (2020). Toxicity and Deleterious Impacts of the Deathstalker Scorpion, Leiurus quinquestriatus, Venom on Development of the Greater Wax Moth, Galleria mellonella (Lepidoptera: Pyralidae). test, 13(4), 199-211. doi: 10.21608/eajbsa.2020.127383
Karem Ghoneim; Hamadah, Kh.; Tanani, M.; Emam, D.. "Toxicity and Deleterious Impacts of the Deathstalker Scorpion, Leiurus quinquestriatus, Venom on Development of the Greater Wax Moth, Galleria mellonella (Lepidoptera: Pyralidae)". test, 13, 4, 2020, 199-211. doi: 10.21608/eajbsa.2020.127383
Ghoneim, K., Kh., H., M., T., D., E. (2020). 'Toxicity and Deleterious Impacts of the Deathstalker Scorpion, Leiurus quinquestriatus, Venom on Development of the Greater Wax Moth, Galleria mellonella (Lepidoptera: Pyralidae)', test, 13(4), pp. 199-211. doi: 10.21608/eajbsa.2020.127383
Ghoneim, K., Kh., H., M., T., D., E. Toxicity and Deleterious Impacts of the Deathstalker Scorpion, Leiurus quinquestriatus, Venom on Development of the Greater Wax Moth, Galleria mellonella (Lepidoptera: Pyralidae). test, 2020; 13(4): 199-211. doi: 10.21608/eajbsa.2020.127383

Toxicity and Deleterious Impacts of the Deathstalker Scorpion, Leiurus quinquestriatus, Venom on Development of the Greater Wax Moth, Galleria mellonella (Lepidoptera: Pyralidae)

Egyptian Academic Journal of Biological Sciences. A, Entomology
Article 19, Volume 13, Issue 4, December 2020, Pages 199-211    PDF (377.01 K)
Document Type: Original Article
DOI: 10.21608/eajbsa.2020.127383
Authors
Karem Ghoneim1; Hamadah, Kh.2; Tanani, M.2; Emam, D.2
1Department of Zoology and Entomology, Faculty of Science, Al-Azhar University, Cairo, Egypt.
2Department of Zoology and Entomology, Faculty of Science, Al-Azhar University, Cairo, Egypt
Abstract
The greater wax moth, Galleria mellonella L. (Lepidoptera: Pyralidae) is the most destructive pest of the honey bee, Apis mellifera, throughout the world. The current study was carried out to evaluate the toxicity and disruptive effects ofthe venom of deathstalker scorpion, Leiurus quinquestriatus (Buthidae: Scorpiones) on the growth, development, and metamorphosis of this pest. The newly moulted 3rd instar larvae were fed on an artificial diet treated with a series of venom concentrations (250, 500, 1000, 2000, 4000, and 8000 ppm). The present results could be summarized as follows. The venom exhibited considerable toxicity against larvae. Also, the pupae suffered a lethal action of the venom, in a dose-dependent course. In contrast, adult survival was not affected by the tested venom. The LC50 was calculated in 3428.9 ppm. With regard to growth and development, the somatic weight gain of larvae was slightly reduced proportionally to the concentration. The larval growth rate increasingly regressed by the ascending concentration. The larval duration was remarkably shortened, in a dose-dependent manner. The pupation rate of treated larvae was significantly regressed, in a dose-dependent course. Also, the pupal duration was shortened. Pupae lost more body water than control pupae. The venom failed to affect the metamorphosis program. 
Keywords
Adult; desiccation; larva; metamorphosis; morphogenesis; mortality; pupation; survival
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