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Comparison of spruce sawflies Pikonema scutellatum in the Czech Republic after 10 years
Pešek, Marcel ; Lukášová, Karolína (advisor) ; Holuša, Jaroslav (referee)
Pikonema scutellatum is a species with high outbreak potential, which caused local outbreaks in several areas in Europe during the 20th century. Within our research we observed an abundance of the spruce sawflies P. scutellatum at 10 predetermined locations around the Czech Republic in 2015. We used Malaise traps of Towness (1972) type for catching adults from late April to late June. P. scutellatum was detected in 9 of 10 sites with a total of 55 individuals. Which is lower than the previous collecting period in years 1999-2006, but it was not statistically confirmed (Kruskal Wallis test; p>0,05). There was more males then females but this also was not statistically confirmed (Wilcoxon matched pairs test; p>0,05). The flight activity period of P. scutellatum started in May and during June declined significantly. Population densities of observed species are very low and the population is in the latent phase.

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3 PEŠEK, Miroslav
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17 Pešek, Martin
1 Pešek, Matěj
5 Pešek, Michael
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