Kielkiewicz, M., Czajkowska, B., 2002.
Seasonal population dynamics of spruce spider mite (Oligonychus ununguis Jacobi) and accompanied predatory fauna on ornamental coniferous plants in Botanical Garden in Powsin. Progress in Plant Protection, 42 (2): 435-438.
Abstract
During the growing season of 2001, studies on the population dynamics of spruce spider mite (O. ununguis) were carried out in a Botanical Garden in Powsin, Poland. Alongside this, the occurrence of the predatory fauna accompanying that of the spider mite was observed. The development of the mite was observed on ornamental coniferous plants such as Picea glauca Conica, P. pungens Tomek, P. omorika. The plants grew on three stands located in close proximity. The most severe infestation was recorded on P. glauca Conica, whereas a lower incidence of the mite was observed on P. pungens Tomek. The highest population level of O. ununguis was observed in May and July. Singular overwintering eggs were found on P. omorika, however no eggs or mobile stages of the pest were observed during the growing season. Three species of the predatory phytoseiid mites, Amblyseius andersoni and two new species for the Polish fauna namely Typhlodromus laurentii [T. setubali] and Typhlodromus phialatus were identified. Numerous larvae of Chrysopidae were also recorded.
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