Tuesday, December 11, 2001 -
D0484

Temperature-dependent development of brown planthopper and its use in rice pest expert system

Kwang Ho Kim, Joon-Ho Lee, and Chuleui Jung. Seoul National University, Entomology Program, School of Agriculture and Biotechnology, Seodun-dong, Suwon, Korea, South Korea

Brown plant hopper (Nilaparvata lugens Stål, Homoptera: Delphacidae) is one of the most destructive insect pests in rice production system in Korea as well as in Asia as a whole. To predict population behavior better in BPH expert system temperature-dependent development was studied in detail under laboratory conditions (R.H. 70-80%, L:D 16:8 h) from 15°É to 32.5°É with 2.5°É interval. No egg development occurred under 15°É. The developmental threshold for small instars (1-3 instar) was 12.2°É and 11.3°É for large instar (4-5 instar). Fecundity was the highest at 27.5°É Optimal temperature for development was 27.5°É. Basic structure of BPH expert system was presented with its limitation. Integration of the results on BPH expert system are further discussed.



Species 1: Homoptera Delphacidae Nilaparvata lugens (brown planthopper)
Keywords: Korea, rice

The ESA 2001 Annual Meeting - 2001: An Entomological Odyssey of ESA