tailieunhanh - Báo cáo khoa học: "Studies on larval parasitoids of Paranthrene tabaniformis (Rott.) (Lepidoptera: Sesiidae) on urban poplars (Populus spp.) in Sofia, Bulgaria"

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp quốc tế đề tài: Studies on larval parasitoids of Paranthrene tabaniformis (Rott.) (Lepidoptera: Sesiidae) on urban poplars (Populus spp.) in Sofia, Bulgaria. | 181 Ann. For. Sci. 57 2000 181-186 INRA EDP Sciences Note Studies on larval parasitoids of Paranthrene tabaniformis Rott. Lepidoptera Sesiidae on urban poplars Populus spp. in Sofia Bulgaria Georgi Georgiev Department of Forest Entomology and Phytopathology Forest Research Institute 132 St. Kliment Ohridski Blvd. Sofia 1756 Bulgaria Received 25 January 1999 accepted 26 August 1999 Abstract - Studies on the species composition and structure of the larval parasitoid complex of poplar clearwing moth Paranthrene tabaniformis Rott. on urban poplars in Sofia and impact of different species on population density of the pest have been conducted during the period 1996-1999. P. tabaniformis larvae within poplar cuttings were collected from one-year-old poplar stumps in five residential areas in Sofia. Parasitoids were collected from pest damaged shoots in a laboratory. Ten larval parasitoids of the host were found Bracon B. intercessor Nees Macrocentrus M. marginator Nees Apanteles evonymellae Bouché Hymenoptera Braconidae Liotryphon crassisetus Thoms. Scambus vesicarius Ratz. Lissonota culiciformis Grav. Dolichomitus sp. Pristomerus vulnerator Panz. Hymenoptera Ichneumonidae Leskia aurea Fall. and Phytomyptera nigrina Meig. Diptera Tachinidae . The most numerous were A. evonymellae and B. intercessor . They attacked young P. tabaniformis larvae and emerged at larval stage of the host. In 1996 the level of total parasitism in studied residential areas in Sofia varied from to with an average of . During the period 1997-1999 mortality of the pest larvae caused by parasitoids reached . A. evonymellae was the most important parasitoid it destroyed of pest larvae. poplars Paranthrene tabaniformis parasitoids host mortality Bulgaria Résumé - Parasitoides larvaires de Paranthrene tabaniformis Rott. Lepidoptera Sesiidae dans les peupliers urbains de Sofia Bulgarie. Entre 1996 et 1999 la composition spécifique et la structure du complexe .