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Davidian E.M.,All Russia Institute for Plant Protection | Gavrilyuk A.V.,Russian Academy of Sciences
Entomological Review | Year: 2014

93 species of 20 genera of the family Aphidiidae were found in Western Siberia and in the neighboring Sverdlovsk, Chelyabinsk, and Orenburg provinces. 24 species were recorded from Russia for the first time. © 2014, Pleiades Publishing, Inc. Source

Sorokina A.P.,All Russia Institute for Plant Protection | Potemkina V.I.,Far Eastern Research Institute for Plant Protection
Entomological Review | Year: 2015

The induction of diapause in the populations of Trichogramma evanescens Westw. and T. chilonis Ishii from the south of Primorskii Territory in the Russian Far East was studied at the constant temperatures of 7, 8, 10, 15, 20, and 25°C. The parental generations developed at either 25° or 20°C and a day length of 16 or 10 hours. The maximum fraction of diapausing prepupae of T. evanescens (nearly 100 %) was observed at the temperatures of 8–10°C, that of T. chilonis only at 10°C, regardless of parental photoperiodic or thermal conditions. The influence of parental temperature and photoperiod on diapause of the progeny was found only in T. evanescens. In this species, after the parental generation had been kept under short-day conditions and a temperature of 25°C, the progeny showed higher incidence of prepupal diapause in the short-day line than in the long-day line at the temperatures of 7 and 15°C. © 2015, Pleiades Publishing, Inc. Source

Vereshchagina A.B.,All Russia Institute for Plant Protection | Vereshchagin B.V.,All Russia Institute for Plant Protection
Entomological Review | Year: 2013

Aphids are pests of agricultural crops and vectors of phytopathogenic viruses. At the same time they make up a very important component of biodiversity; for example, in Moldova only 9% of aphid species are pests. The trophic reactions of aphids related to selection and use of the host plants are far from being well-known. This paper presents an attempt at classification of the aphid host plants, based on analysis of the published data and those obtained by the authors in their studies in Leningrad Province of Russia and in the Republic of Moldova focused on the specific traits of epigenesis and population structure as well as the behavior, feeding, and reproduction of the aphids. The plants are classified by the degree of preference shown by the aphids. © 2013 Pleiades Publishing, Inc. Source

Akhanaev Y.B.,All Russia Institute for Plant Protection | Berim M.N.,All Russia Institute for Plant Protection | Jiang X.,Chinese Academy of Agricultural Sciences | Kutcherov D.A.,Saint Petersburg State University | And 8 more authors.
Entomological Review | Year: 2013

The beet webworm, Loxostege sticticalis L., is a very dangerous polyphagous insect pest whose outbreaks periodically occur in southern Russia and northern China. The aim of our work was to describe the photoperiodic response of beet webworm populations from western (Krasnodar Territory and Rostov Province) and eastern [Buryatia and China (Hebei Province)] parts of the pest range. The insects were reared under constant photoperiods of 12-18 h and constant temperatures of 19-25°C. Incidence of diapause at different photoperiods did not show any considerable geographic differences, and the critical day length at which 50% of prepupae arrested their development was about 14-15 h in all the populations studied at experimental temperatures. The results obtained agree with the hypothesis on the existence of an area (or areas) where the pest survives during adverse periods and wherefrom it spreads when an outbreak begins (Saulich et al., 1983; Goryshin et al., 1986). Presumably, the larger part of the pest native habitats (to the north of the steppe zone) is occupied by temporary populations, incapable of surviving for long periods without an inflow of migrants from more southerly steppe regions. © 2013 Pleiades Publishing, Inc. Source

Sukhoruchenko G.I.,All Russia Institute for Plant Protection | Belyakova N.A.,All Russia Institute for Plant Protection | Pazyuk I.M.,All Russia Institute for Plant Protection | Ivanova G.P.,All Russia Institute for Plant Protection
Entomological Review | Year: 2015

The study reports the results of toxicity tests for several insecticides which are allowed to be used on greenhouse plants (Admiral, Mospilan, Spintor, and BT), as applied to different developmental stages of the predatory bugs Nesidiocoris tenuis Reuter and Macrolophus pygmaeus H.-S. (family Miridae), which feed on whiteflies, aphids, thrips, and spider mites. The juvenoid Admiral is found to be the least toxic to these species, whereas the spinosyn Spintor is most toxic. The neonicotinoid Mospilan and a microbiological insecticide BT are intermediate in their effects. The timing of application of insecticides most favorable to the predatory mirids when both pest management methods are used together is discussed. © 2015, Pleiades Publishing, Inc. Source

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