<abstract xmlns="http://www.w3.org/1999/xhtml">
				
				<p> In the spruce stand situated in Central Slovakia, a manipulation experiment was performed aimed at attracting spruce bark beetle (Ips typographus) to living and healthy spruce trees using pheromone dispensers. The goal of the experiment was to show that the galleries of the Ips typographus in the irrigated spruce trees differed in the parameters from the galleries in drought-stressed trees. Significant differences were revealed mainly in those gallery parameters that occur after the excavation of a nuptial chamber, or after the mating of parental beetles. The revealed differences prove that drought in combination with extreme temperatures significantly reduces defence reactions of spruce against the attack of Ips typographus. Water deficit together with high temperatures significantly postpone and retard the activation of defence reactions of spruce on one side, and accelerates the regeneration and the development of Ips typographus on the other side.</p>
			</abstract>

In the spruce stand situated in Central Slovakia, a manipulation experiment was performed aimed at attracting spruce bark beetle (Ips typographus) to living and healthy spruce trees using pheromone dispensers. The goal of the experiment was to show that the galleries of the Ips typographus in the irrigated spruce trees differed in the parameters from the galleries in drought-stressed trees. Significant differences were revealed mainly in those gallery parameters that occur after the excavation of a nuptial chamber, or after the mating of parental beetles. The revealed differences prove that drought in combination with extreme temperatures significantly reduces defence reactions of spruce against the attack of Ips typographus. Water deficit together with high temperatures significantly postpone and retard the activation of defence reactions of spruce on one side, and accelerates the regeneration and the development of Ips typographus on the other side.

Impact of irrigation on the gallery parameters of spruce bark beetle (Ips typographus L., Coleoptera: Curculionidae, Scolytinae)

National Forest Centre - Forest Research Institute Zvolen - Centre of Forest Protection Service, Lesnícka 11, SK - 969 23 Banská Štiavnica, Slovakia

National Forest Centre - Forest Research Institute Zvolen, T. G. Masaryka 2175/22, SK – 960 92 Zvolen, Slovakia

Central European Forestry Journal

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

In the spruce stand situated in Central Slovakia, a manipulation experiment was performed aimed at attracting spruce bark beetle (Ips typographus) to living...

Impact of irrigation on the gallery parameters of spruce bark beetle (Ips typographus L., Coleoptera: Curculionidae, Scolytinae)

Online veröffentlicht: 13. Juni 2014

Seitenbereich: 61 - 67

DOI: https://doi.org/10.2478/forj-2014-0006

© by Jozef Vakula

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.