Scientific journal
Scientific Review. Biological science
ISSN 2500-3399
ПИ №ФС77-57454

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THE FEATUTES OF SIBERIAN MOTH (DENDROLIMUS SUPERANS SIBIRICUS TSCETV.) OF DIFFERENT GEOGRAPHICAL POPULATIONS OUTBREAKS OF A MULTI-YEAR CYCLICAL DYNAMICS IN THE SIBERIA

Koltunov E.V. 1 Erdakov L.N. 2
1 Botanical Garden Ural Department of Russian Academy of science
2 Institute of Animal Systematics and Ecology
The features of Siberian moth (Dendrolimus superans sibiricus Tschetv) of different geographical populations outbreaks of a multi-year cyclical dynamics living on the territory of Tomsk region, Yakutia, Krasnoyarsk region, the Altai studied by of spectral analysis method. In the Siberian moth populations in the Tomsk region, thanks to the considerable length of a set of observations, it was possible to identify the greatest range of population dynamics cycles. Among them was dominated by midrange cycles: 16.6 years, 26.3, and 40 years. We identified, also, 270, and 83 -year cycles and a lot of high-frequency rhythms . In the forests of Krasnoyarsk region dominated 14-15 and 10-12 years cycles. In the Altai, this species is well manifested only 2 cycles (20 year and 4.9 year). They are almost multiples of each other and most likely low- frequency rhythm is obtained by adding a high-frequency every 4 years. In Yakutia, there is a clear dominance of 85 -year cycle, 30 years and 12.8 years over the rest. We suggest that the dominance of the two longest cycles in this population due to the greater severity of climatic conditions. The results showed that in every region of the Siberian moth population exhibits increased power of some of the internal rhythms of the spectrum that it potentially has. Consequently, the Siberian moth species initially has the identical spectrum of rhythms with which he adapts to the local climatic fluctuations. That is why, a large set of rhythms at the species spectrum determines the greatest opportunity of the Siberian moth to adapt to a wide range of climatic cycles, to realize their life strategy.