Entomological Review (2008) 88, 666-675

A.N. Frolov, Yu.M. Malysh and Yu.S. Tokarev (2008)
Biological features and population density forecasts of the beet webworm Pyrausta sticticalis L. (Lepidoptera, Pyraustidae) in the period of low population density of the pest in Krasnodar Territory
Entomological Review 88 (6), 666-675
Abstract: Population dynamics of the beet webworm Pyrausta sticticalis L. was studied in 2003-2005 in Krasnodar Territory (Slavyansk-on-Kuban District) during the period of low population density of the pest. In the period examined, the adult death rate was high, fecundity was low; the low rate of hatchability and high rate of mortality was typical of larvae reared in the laboratory. Analysis of life tables has demonstrated that the observed population density of adults could be explained only by a constant flow of migrants. Low viability of insects from the local population could be explained by the infection with pathogenic microorganisms, including viruses of the Polyhedrosis and Granulosi groups of Baculovirus, and microsporidia, including Nosema sticticalis and Microsporidium sp. Reproduction of the pest can also be influenced by unfavorable weather conditions reducing population density in the subsequent generation. It is demonstrated that the model of the beet webworm population density dynamics based on indices of female fertility, changes in the offspring viability, and the rate of infection with microsporidia is more reliable than models based only on meteorological factors.
Original Russian Text © A.N. Frolov, Yu.M. Malysh, Yu.S. Tokarev, 2008, published in Entomologicheskoe Obozrenie, 2008, Vol. 87, No. 2, pp. 291-302.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Andrei N. Frolov, Yuri S. Tokarev

Research topic(s) for pests/diseases/weeds:
population dynamics/ epidemiology

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Loxostege sticticalis		Russia (Eur.)