scholarly journals Correlation between flight activity of sawflies Pristiphora abietina, P. saxesenii, P. gerula and P. leucopodia (Hymenoptera: Tenthredinidae) and spruce (Picea abies) bud breaking in Eastern Czech Republic

2008 ◽  
Vol 53 (Special Issue) ◽  
pp. 69-73 ◽  
Author(s):  
J. Holuša ◽  
J. Lubojacký

The flight activity of spruce tenthredinids were studied using Malaise traps and yellow sticky boards in young spruce forests in the Nízký Jeseník Hills during years 2005 and 2006. In most cases, studied species (<I>Pristiphora abietina, Pristiphora saxesenii, Pristiphora gerula, Pristiphora leucopodia</I>) showed a statistically significant correlation between numbers of specimens caught at two- or three-day periods and numbers of budded spruces in both years.

2019 ◽  
Vol 48 (No. 10) ◽  
pp. 432-440 ◽  
Author(s):  
J. Holuša ◽  
Ľ. Vidlička

Chrysopids and Hemerobiids were studied using Malaise traps in young spruce forests in the eastern part of the Czech Republic. A total of 12 species were found. The most abundant species were eurytopic Chrysopa carnea, Chrysopa perla, Hemerobius humulinus and Hemerobius pini associated with conifers. The seasonal flight activity of these species is discussed.


2008 ◽  
Vol 53 (Special Issue) ◽  
pp. 74-81 ◽  
Author(s):  
Ľ. Vidlička ◽  
J. Holuša

Neuropteroid insects (Neuroptera, Raphidioptera) and scorpion flies (Mecoptera) were studied in six young spruce forest localities in the eastern part of the Czech Republic during years 2005 and 2006. Twenty-seven species of lacewings, four species of snake flies and four species of scorpion flies were found using the Malaise traps. Consequently, the seasonal flight activity of the seven most abundant species (<I>Chrysopa perla, Hemerobius pini, Hemerobius humulinus, Dichrostigma flavipes, Phaeostigma notata, Panorpa communis and Panorpa germanica</i>) is discussed.


2008 ◽  
Vol 53 (Special Issue) ◽  
pp. 11-15 ◽  
Author(s):  
J. Holuša ◽  
M. Trýzna

In the Czech Republic, <I>A. nebulosus</I> occurs in coniferous, deciduous as well as in mixed forests, in lowland forests and even on forest-steppe habitats. Larvae occur mainly on <I>Picea</I> sp., Pinus</I> sp. and<I> Abies</I> sp.; adults occur on the same tree species and also on <I>Larix</I> sp., <I> Quercus</I> sp., <I>Salix</I> sp. and<I> Fagus</I> sp. Adults overwinter in the bark of several coniferous trees with thicker bark (mainly <I>Pinus sylvestris</I> L. and <I>Larix decidua</I> Mill.) where they are hidden in cracks. Woodpeckers attack such trees with masses of<I>A. nebulosus</I> very intensively. In five localities with Malaise traps in the Nízký Jeseník Hills, the flight activity started at the beginning of May and ended in mid-June with the peak at the end of May and beginning of June in 2005. In 2006, the flight activity started later in mid-May and lasted to the beginning of July but was interrupted by cold and rainy weather. At higher altitudes were beetles sampled only in the first half of June in 2006. The size of males and females is very similar. In total, pronotum width of males varied between 0.85 mm and 2.40 mm, and females between 1.00 mm and 2.30 mm. There is no statistically significant difference between them. The equal sex ratio found in our material could confirm the fact that the flight activity of both sexes is the same.


Author(s):  
A.P. Korablev ◽  
◽  
D.S. Kessel ◽  
M.Yu. Pukinskaia ◽  
K.V. Schukina ◽  
...  

2012 ◽  
Vol 50 (No. 12) ◽  
pp. 579-585 ◽  
Author(s):  
J. Holuša ◽  
L. Roller

A study of diprionids associated with spruce was done at 31 sites of the eastern part of the Czech Republic in 1988&ndash;2003. In total 45 specimens belonging to Gilpinia abieticola (6 specimens), G. hercyniae (3) and G. polytoma (36) were collected using Malaise traps, emergency traps, bark-beetle pheromone baited traps or sweeping. The spruce diprionids were recorded in 30% of the studied sites only. G. polytoma was the most abundant and it is probably bivoltine with adult activity from April to August. The results of emergence trap-monitoring in Paskovsk&yacute; les indicate that this species is in latency.


2014 ◽  
Vol 60 (No. 12) ◽  
pp. 540-543
Author(s):  
I. Tomášková ◽  
J. Vítámvás ◽  
J. Korecký

:Germination capacity and germination energy are usually the most frequently used quantitative parameters of forest tree seed. With seed ageing both parameters decreased and the rate of the collapse is given by tree species, age of tree and its seed and biotic and abiotic factors. Relatively little attention has been paid to the age of seed. As it was found, the longevity of the main tree species remained relatively high, and spruce (Picea abies [L.] Karsten and pines (Pinus sylvestris L.) from the investigated areas across the Czech Republic maintained minimally one third of germination capacity or germination energy during the 10 years with the exception of larch (Larix decidua Mill.) where germination capacity decreased almost to zero after 10 years. Although the germination energy and germination capacity decreased significantly, it is possible to use the seed in the case of shortage of the seed of better quality. &nbsp;


2014 ◽  
Vol 60 (No. 1) ◽  
pp. 6-11 ◽  
Author(s):  
J. Lubojacký ◽  
J. Holuša

The numbers of nontarget arthropods captured by Theysohn pheromone traps (TPTs) and insecticide-treated tripod trap logs (TRIPODs) were compared; both kinds of traps were baited with pheromone lures Pheagr IT for Ips typographus. In 2010, 15 TPTs and 15 TRIPODs were deployed (with a 10-m spacing) in a forest in the northeastern Czech Republic. The TPTs and TRIPODs were inspected weekly during the entire period of I. typographus flight activity (30 April&ndash;1 October). The TRIPODs were sprayed with Vaztak 10 SC insecticide every 7 weeks; at each spraying, the pheromone evaporators were renewed. Higher numbers of entomophagous arthropods, including the predacious beetles Thanasimus formicarius and T. femoralis, were captured by the TRIPODs than by the TPTs. The number of Thanasimus spp. captured by TRIPODs was especially high at the end of April. The efficacy of TRIPODs for the control of I. typographus could be maintained while the kill of nontarget organisms could be reduced by deploying the evaporators 1 week later (in early May rather than in late April) in relation to the recommended date of dispenser installation. &nbsp;


2010 ◽  
Vol 40 (No. 3) ◽  
pp. 75-81
Author(s):  
J. Stará ◽  
F. Kocourek

In 9 years of the period 1993–1999 and 2001–2003 the flight activity of <I>Archips podana</I> was investigated by pheromone traps placed in four apple orchards in Central and East Bohemia. The cumulative catches of <I>A. podana</I> males were plotted against time of the catch expressed in sum of degree-days (DD) above 10°C and approximated by Richards’ function. Common parameters of Richards’ function could be found for the overwintering generation of <I>A. podana</I> from all localities. The beginning, peak and end of flight activity of the overwintering generation of the <I>A. podana </I>population in Central and East Bohemia can be predicted by use of DD. <I>Archips podana </I>is usually bivoltine in the Czech Republic, rarely univoltine in cold years or cold localities. Construct the flight pattern of the summer generation could of <I>A. podana </I>not be constructed, because the course of flight of this generation in dependence on DD differed significantly in particular years and localities.


2007 ◽  
Vol 187 (1-4) ◽  
pp. 203-217 ◽  
Author(s):  
Karl H. Mellert ◽  
Andreas Gensior ◽  
Axel Göttlein ◽  
Christian Kölling ◽  
Gernot Rücker

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