Journal of Plant Protection Research ISSN 1427-4345 ORIGINAL ARTICLE The eff ect of diff erent seeding densities of linseed (Linum usitatissimum L.) on fl ax fl ea beetles (Coleoptera: Chrysomelidae) Jacek Twardowski1*, Michał Hurej1, Radosław Ścibior2, Andrzej Kotecki3 1 Department of Plant Protection, Wroclaw University of Environmental and Life Sciences, Grunwaldzki 24a, 50-363 Wroclaw, Poland 2 Department of Zoology, Animal Ecology and Wildlife Management, University of Life Sciences in Lublin, Akademicka 13, 20-950 Lublin, Poland 3 Department of Crop Production, Wroclaw University of Environmental and Life Sciences, Grunwaldzki 24a, 50-363 Wroclaw, Poland Vol. 57, No. 2: 158–166, 2017 Abstract DOI: 10.1515/jppr-2017-0022 Linseed, one of the oldest cultivated crops, is again gaining in importance, mainly due to its nutritional benefi ts and biomedical applications. Th erefore, it is expected that herbivores will Received: February 9, 2017 also exist in greater abundance. Among them the fl ea beetle, Aphthona euphorbiae Schrank Accepted: June 5, 2017 and Longitarsus parvulus Paykull are considered to be serious pests of fl ax grown for fi bre and seeds in Europe. Th e aim of this study was to determine fl ax fl ea beetles’ abundance, spe- *Corresponding address: cies richness and seasonal dynamics on linseed grown at diff erent densities. It was expected
[email protected] that linseed seeding density can signifi cantly aff ect fl ea beetle populations. Th e experiment was carried out in Lower Silesia, Poland, from 2011 to 2013. A genetically modifi ed type of linseed overproducing fl avonoids was used.