TAILIEUCHUNG - Báo cáo lâm nghiệp: "Occurrence, biology and harmfulness of Galerucella lineola (F.) (Coleoptera, Chrysomelidae)"

Tuyển tập những bài báo cáo nghiên cứu khoa học hay nhất được đăng trên tạp chí JOURNAL OF FOREST SCIENCE đề tài: Occurrence, biology and harmfulness of Galerucella lineola (F.) (Coleoptera, Chrysomelidae). | JOURNAL OF FOREST SCIENCE 53 2007 8 364-380 Occurrence biology and harmfulness of Galerucella lineola F. Coleoptera Chrysomelidae - Part 1. Last year s parent beetles J. Urban Faculty of Forestry and Wood Technology Mendel University of Agriculture and Forestry Brno Brno Czech Republic ABSTRACT In Moravia in 1995 to 2006 the abundant occurrence of Galerucella lineola F. was used to study its occurrence biology and harmfulness. An alder biological form was studied in Alnusglutinosa and A. incana mainly in Polnicka Forest District Zdar region and a willow form in Salix viminalis S. triandra and S. caprea in riparian and accompanying stands of the Svitava river near Bílovice nad Svitavou Brno region . Imagoes leave their sites usually in the 1st half of May. In the course of to 3 months they damage on average cm2 leaves of A. glutinosa and S. caprea of this value males times less than females . Males eat on average 15 times during 24 hours for a period of minutes . in total 52 minutes day . Females eat on average 36 times for a period of 7 min . 252 min day . Imagoes copulate on average times per day for a period of 67 min. For the whole period of reproduction about 42 days they copulate on average 428 times . for 20 days. Eggs are laid into groups of 3 to 20 on average 14 pieces. Females lay 457 to 791 on average 612 eggs . about 15 eggs per day. Medina collaris Fall. Tachinidae and Townesilitus fulviceps Ruthe Braconidae belong among others to the enemies of imagoes. Keywords Chrysomelidae Galerucella lineola host species hibernation feeding last year s imagoes reproduction natural enemies In connection with climatic meteorological anomalies particularly mild and dry winter and spring periods at the end of the last and at the beginning of this century a series of dendrophilous insect species markedly actuated. Extreme weather and primary physiological weakening of tree species resulted in a decrease in the effective .

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