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Siberian Journal of Forest Science

2016 year, number 3


V. G. Soukhovolsky1,2, F. N. Tomilin3, P. V. Artyushenko3, P. E. Tsikalova2
1V. N. Sukachev Institute of Forest, Russian Academy of Sciences, Siberian Branch, Akademgorodok, 50/28, Krasnoyarsk, 660036 Russian Federation
2International Scientific Center for Study of Extreme Men State, Krasnoyarsk Scientific Center, Russian Academy of Sciences, Siberian Branch, Akademgorodok, 50, Krasnoyarsk, 660036 Russian Federation
3L. V. Kirensky Institute of Physics, Russian Academy of Sciences, Siberian Branch, Akademgorodok, 50/50, Krasnoyarsk, 660036 Russian Federation
Keywords: насекомые, поведение, феромоны, молекулы, устойчивость, квантово-химический анализ, insects, behavior, pheromones, molecules, stability, quantum-chemical analysis


Features of external environmental factors (such as electromagnetic radiation in certain spectral bands) influencing pheromone molecules, which are carriers of information for forest insects in the search of the opposite sex, were examined. Stability of pheromone molecules for external influences has been studied for siberian moth Dendrolimus superans sibiricus Tschetv., pine moth Dendrilimus pini L., gypsy moth Lymantria dispar L., for xylophages Ips typographus L., Monochamus urussovi Fish. and Monochamus galloprovincialis Oliv. Properties of pheromone molecules were evaluated by calculations using quantum-chemical method B3LYP. Existing methods of quantum-chemical calculations are useful for analyzing the properties of quite small and uncomplicated molecules of forest insect pheromones. The calculations showed that the molecules of insect pheromones are able to absorb light in the ultraviolet range and move into an excited state. The values of dipole moments, the wavelengths of the absorption, atomic and molecular electronic properties of pheromones in the ground and excited states were calculated. The calculations showed that for the reaction of pheromones with oxygen an energy barrier is somewhat higher than for reactions of pheromones with water vapor. The worst reaction of pheromones with water molecules likely to pheromones such molecules whose dipole moment is comparable to the dipole moment of water. Quantum-chemical characteristics of the pheromone molecules can be linked to specific behavior of the insects.