通过室内笼罩饲养法观察了褐飞虱\[Nilaparvata lugens (Stl)\]的两种同属近似种伪褐飞虱(N. muiri China)和拟褐飞虱\[N. bakeri (Muir)\]在水稻、游草\[Leersia hexandra (李氏禾)\]、秕谷草(L. sayanuka)等禾本科常见作物或杂草上的成虫繁殖力、卵和若虫发育情况。结果表明，伪褐飞虱、拟褐飞虱的适宜寄主不同于褐飞虱，前两者为游草和秕谷草，褐飞虱则为水稻。水稻上的伪褐飞虱和拟褐飞虱均能完成世代发育，但种群趋势指数分别仅0.2和0.02，不能持续繁衍。3种褐飞虱的繁衍能力有明显差别，褐飞虱明显高于伪褐飞虱和拟褐飞虱，三者的最高种群趋势指数分别为水稻上褐飞虱的333.82、秕谷草上伪褐飞虱的82.06和游草上拟褐飞虱的39.28。
The adult fecundity, egg hatchibility and nymph development of N. muiri China and N. bakeri (Muir), two sibling species of Nilaparvata lugens (Stl) were studied on several common gramineous crops or weeds by using the cage method in laboratory. The results indicated that the suitable hosts of N. muiri and N. bakeri were Leersia hexandra Swart and Leersia sayanuka Ohwi which are different from N. lugens whose suitable host was Oryza sativa. Both N. muiri and N. bakeri could complete their life cycle on rice but could not continue to propagate because the population trend indexes were only 0.2 and 0.02, respectively. The fecundity of N. lugens was significantly higher than N. muiri and N. bakeri. The highest population trend indexes of the three Nilaparvata species were 333.82 of N. lugens on rice, 82.06 of N. muiri on L. hexandra and 39.28 of N. bakeri on L. sayanuka, respectively.
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