寄主植物对新入侵害虫红棕象甲的生长发育与繁殖的影响

【作者】 鞠瑞亭； 王凤； 李跃忠；

【机构】 上海市园林科学研究所；

【摘要】 <正>The development,survivorship and reproduction of the red palm weevil,Rhynchophorus ferrugineus(Olivier),raised on five ornamental palms,were studied in the laboratory at 26±2℃.更多还原

【Abstract】 The development,survivorship and reproduction of the red palm weevil,Rhynchophorus ferrugineus（Olivier）,raised on five ornamental palms,were studied in the laboratory at 26±2℃.The development time of R.ferrugineus was 74.1 d on Canary Island date palm,82.1 d on Chusan palm, 85.4 d on Pindo palm,68.8 d on Washington palm and 90.6 d on silver date palm;the development time on silver date palm was significantly longer than that on the other host plants.The survival of immature R.ferrugineus was from 25.0%to 41.7%.Most mature larvae began to pupate on eighth-instar on Canary Island date palm and Washington palm,and ninth-instar on Chusan palm, Pindo palm and silver date palm.Lifetime fecundity of R.ferrugineus on Canary Island date palm, Chusan palm,Pindo palm,Washington palm and silver date palm was 267.8,134.0,109.8,216.0,and 131.4,respectively;lifetime fecundity on Canary Island date palm and Washington palm were significantly greater than that on the other plants.The intrinsic rate of natural increase（r_m）,net reproductive rate（R₀） and mean generation time（T） was 0.038,78.3 and 115.0 d on Canary Island date palm;0.028,33.1 and 125.5 d on Chusan palm;0.029,40.9 and 128.2 d on Pindo palm;0.041, 64.0,101.4 d on Washington palm,and 0.025,30.6,135.6 d on silver date palm,respectively.Based on population growth parameters,we concluded that Canary Island date palm and Washington palm were the more suitable host plants and silver date palm was the least suitable host plant for R. ferrugineus.更多还原