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Contemporary Problems of Ecology

2018 year, number 6

Effect of Secondary Metabolites Juniperus sabina L. (Cupressaceae) on the Survival and Nutrition Galleria mellonella L. (Pyralidae)

D. S. ELISOVETSKAYA1, J. BRINDZA2
1Institute of Genetics, Physiology and Plant Protection ASM, Chisinаu, MD-2002, Chisinаu, 20, Padurii, Republic of Moldova
2Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 949 76 Nitra
Keywords: экстракт, эфирное масло, Juniрerus sabinа, репеллент, антифидант, инсектицид, детеррент, extract, essential oil, repellent, antifeedant, ivsecticide, deterrent

Abstract

The effect of alcohol extract and essential oil from Juniрerus sabinа L. (Cupressaceae) on the survival and nutrition of the larvae Galleria mellonella L. (Pyralidae) was studied. It was found that the essential oil has insecticidal, antifeedant, deterrent and repellent properties. The loss of larvae with topical application of 0.2 мl of essential oil to the dorsal part (contact action) reaches 64.0 %. Feeding larvae with food treated with essential oil of J. sabinа (200 мl of essential oil per 1.5 grams of feed) is reduced by 2.1 times compared to the control. It is shown that larvae G. mellonella avoid feeding on the oil treated feed during 14 days, and actively move in the opposite direction from the treated feed when they are placed in Petri dishes. It has been established that vapors of essential oil suppress the development of larvae G. mellonella even when fed with untreated food - there is a lag in body weight and a delay molting in the next age. The essential oil of J. sabinа also exhibits moderate toxicity (20.0 %) when the larvae eat the treated food, i. e. possess intestinal action. The alcohol extract of J. sabinа at a concentration of 2.5 % of active substances (on dry residue) has a negligible (insignificant) effect on the loss of larvae in the case with treatment of feed (10.0 % contact action). With topical application to the dorsal part, the extract causes 20.0 % of insect death. Antifeedant and repellent properties against larvae alcohol extract of J. sabina did not show, however, a low level of deterrental activity, expressed in suppressing the formation and development of pupae of Galleria mellonella , was noted. Essential oil reduced the percentage of pupated larvae.