tailieunhanh - Báo cáo lâm nghiệp: "Occurrence of Ips duplicatus (Coleoptera: Curculionidae, Scolytinae) on pines (Pinus sp.) in the Czech Republic and southern Poland – Short Communication"

Tuyển tập những bài báo cáo nghiên cứu khoa học hay nhất được đăng trên tạp chí JOURNAL OF FOREST SCIENCE đề tài: Occurrence of Ips duplicatus (Coleoptera: Curculionidae, Scolytinae) on pines (Pinus sp.) in the Czech Republic and southern Poland – Short Communication. | JOURNAL OF FOREST SCIENCE 54 2008 5 234-236 Occurrence of Ips duplicatus Coleoptera Curculionidae Scolytinae on pines Pinus sp. in the Czech Republic and southern Poland - Short Communication J. Holusa1 2 W. Grodzki3 1Forestry and Game Management Research Institute Strnady Frýdek-Místek Czech Republic Faculty of Forestry and Wood Sciences Czech University of Life Sciences Prague Prague Czech Republic department of Forest Management in Mountain Regions Forest Research Institute Cracow Poland ABSTRACT Spruce is regarded as the only host plant of Ips duplicatus in Central Europe whereas this beetle exceptionally occurs on pine in Siberia. Its occurrence on Pinus strobus and Pinus sylvestris was discovered in the eastern part of the Czech Republic and in southern Poland where the population density of Ips duplicatus has been increased for a long time on Norway spruce. However all cases concerned only single trees which were growing in forest complexes with spruce dominance. The most likely explanation is merely a consequence of the typical host plant shortage. Keywords Ips duplicatus faunistics host tree Pinus Czech Republic southern Poland The double-spined spruce bark beetle Ips duplicatus Sahlberg 1836 occurred only in the Euro-Sibe-rian taiga from Sweden to Sakhalin and in the Alps Reitter 1916 Pfeffer 1955 until the beginning of the 20th century. Recently its occurrence has been confirmed almost in the whole territory of the Czech Republic up to 600 m . rarely at a higher altitude. Its focus as well as its outbreak is located in northern Moravia and Silesia Holusa Knizek 2007 . In southern Poland the occurrence of this species was detected in the whole area between the Silesian Upland in the west and Gorce in the east up to 1 000 m . sporadic findings were recorded also in the Western Sudeten Grodzki 2003 . Wachtl 1895 reported earlier that this species attacks not only spruces Picea abies L. Karst. in orig. Picea excelsa Link. Picea X fennica Regel. Kom