变叶木品种对B型烟粉虱发育和繁殖的影响  

Development and reproduction of B biotype Bemisia tabaci on variegated leafcrotones

作　　者：林莉[1] 任顺祥[1] 

机构地区：[1]华南农业大学资源环境学院,广东广州510642

出　　处：《华南农业大学学报》2005年第2期39-42,共4页Journal of South China Agricultural University

基　　金：广东省自然科学基金资助项目 (0 10 312 )

摘　　要：在实验室条件[温度为(2 6±1)℃,湿度为75 %～90 % ,光∶暗为14∶10 ]下,研究了B型烟粉虱Bemisiatabaci(Gennadius)在撒金变叶木Codiaeumvariegatum‘Aucubaefolium’、美丽变叶木C .variegatumnov . ?和彩叶变叶木C .variegatum‘Mons florin’上的发育、存活和繁殖情况.结果表明,烟粉虱在上述3种相应寄主上从卵发育到成虫的存活率分别为2 3 4 9%、8 83%和5 81% ;发育时间以在美丽变叶木上最短,为2 2 17d ,彩叶变叶木上最长,为31 2 5d ,差异显著;成虫寿命在彩叶变叶木上最长,为12 39d ,美丽变叶木上最短,为6 93d ;在相应寄主上的平均单雌产卵量分别为30 85、2 7 87和72 4 5粒;在撒金变叶木上的内禀增长率(rm)最大,为0 0 4 4 9.综合比较该试验中的3种变叶木。Effects of 3 species of variegated leafcrotones on the development, survivorship and reproduction of the B biotype Bemisia tabaci (Gennadius) were studied in the laboratory [t=(26±1)?℃, RH=75%-90%,( L∶D)=(14∶10)]. The total survival rate from egg to adult on Codiaeum variegatum 'Aucubaefolium' (CVA), C.variegatum nov. ? (CVN) and C.variegatum 'Mons-florin' (CVM) were 23.49%, 8.83%, and 5.81%, respectively. The developmental durations from egg to adult were varied from 22.17 days on CVN to 31.25 days on CVM. The average longevities of female adults were ranged from 6.93 days on CVN to 12.39 days on CVM. The average numbers of eggs laid by per female were 30.85, 27.87, and 72.45 on the above hosts respectively. The intrinsic rates of natural increase (r_m) for B biotype B.tabaci on CVA was the highest (0.044 9). Based on life table analyses of whitefly population, CVA was the suitable host for B biotype B.tabaci in this study.

关 键 词：B型烟粉虱 发育 存活率 繁殖 变叶木 品种 实验种群生命表 

分 类 号：S436.8[农业科学—农业昆虫与害虫防治]