Труды сотрудников ИЛ им. В.Н. Сукачева СО РАН

/ I. N. Pavlov [et al.] // Contemp. Probl. Ecol. - 2018. - Vol. 11, Is. 4. - P406-419, DOI 10.1134/S1995425518040054. - Cited References:27. - This study was supported by the Russian Foundation for Basic Research, the Government of Krasnoyarsk krai, and the Krasnoyarsk Regional Fund for Support of Scientific and Technical Activity, project no. 16-44-242145r_ofi_m. . - ISSN 1995-4255. - ISSN 1995-4263РУБ Ecology

Аннотация: The territory of the new mass outbreak of Dendrolimus sibiricius is northernmost Siberia. The present increase in the pest numbers started in 2011-2012, 14 years after the previous mass outbreak. As a result, the area of damage to dark coniferous forests exceeded 1.4 million ha. The reasons for the emergence of the pest population from a depressive state are insufficient moisture availability in May 2011, severe droughts in June-July 2012, and increased mean monthly temperature. A significant decrease in the vegetation index of SWVI occurred in 2011-2012. The hydrothermal regime of the spring-summer period in these years promoted the transition of most of the pest populations to development over 1-year generation. One exceptional feature of the current outbreak is low damage to D. sibiricus caterpillars by diseases and parasites. Favorable weather conditions and a low number of natural entomopathogens contribute to the rapid spread of the pest in northern and eastern directions. This creates a high risk of mass outbreak of D. sibiricus in dark coniferous forests, since the area of nearby dark coniferous stands suitable in structure, climatic, and forest-growing conditions for the pest dispersal is more than 2.7 million ha. Pure cultures of the entomopathogenic fungus Beauveria bassiana were isolated from dead caterpillars of D. sibiricus. Multistage screening made it possible to select a promising strain for the creation of a long-acting bioinsecticide for the preventive treatment of forests. The main selection criteria are high virulence, high entomopathogenic activity at low temperatures (7-10A degrees C), and the ability for solid-phase fermentation of plant waste.

WOS,
Смотреть статью,
Scopus

Держатели документа:
Russian Acad Sci, Sukachev Inst Forest, Siberian Branch, Krasnoyarsk 660036, Russia.
Reshetnev Siberian State Univ Sci & Technol, Krasnoyarsk 660049, Russia.
Fed Forestry Agcy Russian Ctr Forest Hlth, Ctr Forest Hlth Krasnoyarsk Krai, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Pavlov, I. N.; Litovka, Y. A.; Golubev, D. V.; Astapenko, S. A.; Chromogin, P. V.; Russian Foundation for Basic Research; Government of Krasnoyarsk krai; Krasnoyarsk Regional Fund for Support of Scientific and Technical Activity [16-44-242145r_ofi_m]

/ I. N. Pavlov, Y. A. Litovka, D. V. Golubev [et al.] // Contemp. Probl. Ecol. - 2020. - Vol. 13, Is. 1. - P71-84, DOI 10.1134/S1995425520010060. - Cited References:59 . - ISSN 1995-4255. - ISSN 1995-4263РУБ Ecology

Аннотация: Conifer decline (Abies sibirica Ledeb. stands) as a result of complex biotic effects on the territory of Krasnoyarsk krai by 2018 reached an area of 541 400 ha; the potential area of further death of A. sibirica is up to 10 million ha. The main reason is the phytopathogenic fungi Armillaria mellea s.l. and Heterobasidion annosum s.l. combined with bark beetle Polygraphus proximus. Trees affected by root pathogens are centers of forest dieback, from which pathological outbreaks spread, including the effects of P. proximus and its phytopathogenic mycoassociates. Neonectria fuckeliana (C. Booth) Castl & Rossman is among the concomitant pathogens in the scale of the lesion, which causes a resin flow that is similar to the effects of P. proximus attack. The phytopathogenicity of pure cultures of the dominant root pathogens of Armillaria borealis Marxm. & Korhonen and Heterobasidion annosum (Fr.) Bref., as well as the stem pathogen of N. fuckeliana, has been confirmed by a series of experiments in vitro. Promising natural agents for the regulation of P. proximus abundance are highly virulent aboriginal strains of Beauveria bassiana (Bals.-Criv.) Vuill., resulting in maximum insect death (up to 100%) for 7-11 days and retaining activity in the temperature range of 16-24 +/- 1 degrees C.

WOS

Держатели документа:
Russian Acad Sci, Sukachev Inst Forest, Siberian Branch, Krasnoyarsk 660036, Russia.
Reshetnev Siberian State Univ Sci & Technol, Krasnoyarsk 660037, Russia.
Federal Forestry Agcy, Russian Ctr Forest Hlth Branch, Ctr Forest Hlth Krasnoyarsk Krai, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Pavlov, I. N.; Litovka, Y. A.; Golubev, D. V.; Astapenko, S. A.; Chromogin, P. V.; Usoltseva, Y. V.; Makolova, P. V.; Petrenko, S. M.