EMERALD ASH BORER Agrilus planipennis Fairmaire (Coleoptera: Buprestidae) IN ALTAI (SOUTHERN SIBERIA)
Yu. N. Baranchikov1, N. S. Babichev1, N. Yu. Speranskaya2, D. A. Demidko1, M. G. Volkovich3, L. S. Snigireva4, E. N. Akulov5, N. I. Kirichenko1,5
1Krasnoyarsk Science Centre of the Siberian Branch of Russian Academy of Science, V. N. Sukachev Institute of Forest, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk, Russian Federation
2Аltai State University, Barnaul, Russian Federation
3Zoological Institute, Russian Academy of Sciences, Saint-Petersburg, Russian Federation
4Altai Branch of the Centre for Grain Quality Assurance, Barnaul, Russian Federation
5Federal State Budgetary Organization All-Russian Plant Quarantine Centre, Krasnoyarsk, Russian Federation
Keywords: buprestid, EAB, ash trees, green ash, Fraxinus pennsylvanica, invasion, Barnaul, Altai Krai
Abstract
Emerald ash borer ( Agrilus planipennis Fairmaire (Coleoptera: Buprestidae)) is an aggressive East Asian invader that has destroyed millions of ash ( Fraxinus L.) trees in North America and Eastern Europe. Researches and practitioners are concerned about ongoing westward distribution of the species into Central Europe. In addition to that, the invasion of this buprestid to Siberia is also not ruled out bearing in mind suitable climatic conditions, particularly on the south, and the presence its favorable host plant, the green ash ( Fraxinus pennsylvanica Marshall). In 2024, the pest has been detected in Barnaul, the administrative center of Altai Krai. By August, the beetle destroyed almost 30 % of ash trees in the city and only 8 % of trees looked healthy. Based on the ratio of larval instars, the pest develops two years per generation in Barnaul. No parasitized larvae of A. planipennis was documented in Barnaul suggesting that the parasitoid, the braconid Spathius polonicus Niezabitowski, which controls this buprestid in Europe, either has not yet appeared in Siberia or remains at a low, undetectable, density. The prospects of introduction of the East Asian parasitoid Spahius galinae Belokobylskij et Strazanac (the most effective biocontrol agent of A. planipennis at its primary range) and the Manchurian ash ( F. mandshurica Rupr.) (the resistant host) to the secondary pest range are emphasized.
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