Arthropod-Plant Interactions

, Volume 1, Issue 4, pp 205–211 | Cite as

Hybrid aspen is not preferred by the large poplar borer (Saperda carcharias)

  • Sanna VälimäkiEmail author
  • Kari Heliövaara
Original Paper


An industrially valuable tree, aspen, suffers from several fungal diseases and insect pests such as the large poplar borer (Saperda carcharias). The role of the beetle as a pest of aspen and hybrid aspen was investigated in five aspen and three hybrid aspen stands in Finland. Approximately 50% of the trees in the study had signs of the large poplar borer. Of these trees, 5% had insect exit holes. Approximately 70% of the trees with larval galleries had only one or two larval galleries. The trees with larval galleries were on average 2 m shorter than those without larval galleries. No significant difference could be detected in the diameter growth between these two groups. The proportion of decay was greater in hybrid aspen (27%) than in aspen (14%). These results show that the large poplar borer is an important pest of both aspen and hybrid aspen in Finland. No significant difference was observed between the aspen and hybrid aspen stands in the number of trees with larval galleries. Hybrid aspen therefore does not appear to be more sensitive to damage caused by the large poplar borer. Thus, a change from hybrid aspen to regular aspen in aspen cultivation is unnecessary, presuming that healthy saplings and an optimal rotation time are used.


Decay Hybrid aspen Wood-boring insects Coleoptera Cerambycidae Saperda carcharias 



We thank Pertti Pulkkinen, Hiski Aro, Raimo Jaatinen, Hannu Kylökäs, Michael Goncalves, Nicolas Alary and Jarkko Jokinen from The Finnish Forest Research Institute, Riika Kilpikari from University of Helsinki, Kyllikki Ihatsu and Jaana Ihatsu for their contributions.


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Copyright information

© Springer Science+Business Media B.V. 2007

Authors and Affiliations

  1. 1.Department of Forest EcologyUniversity of HelsinkiHelsinkiFinland

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