An analysis of the predator-prey system in the paddy field |
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| Authors: | Keizi Kiritani and Naotoshi Kakiya |
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| Institution: | (1) Division of Entomology, Prefectural Institute of Agricultural and Forest Science, Ino, 781-21 Kochi, Japan;(2) Present address: Extension and Education Division, Ministry of Agriculture and Forestry, Chiyoda-ku, Tokyo |
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| Abstract: | Summary A predator-prey system involvingLycosa pseudoannulata as predators and both the green rice leafhopper,Nephotettix cincticeps and the brown planthopper,Nilaparvata lugens as prey was studied in an experimental paddy field. Daily predation rates on the prey and weekly disappearance rates ofLycosa females were related to densities of both predators and prey by multiple regression. During the off-season of reproduction
for predators and prey, it proved possible to simulate the interaction betweenLycosa and its prey. |
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