State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, #12, Zhong-Guan-Cun Nan-Da-Jie, Haidian, Beijing 100081, China.
J Econ Entomol. 2013 Jun;106(3):1379-85. doi: 10.1603/ec12401.
Use of plant secondary metabolic compounds is an important method for insect pest control. In this study, the survival, development, and reproduction of Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) MEAM1 cryptic species were compared over two consecutive generations on three cotton cultivars of different gossypol levels. Both cotton cultivar and generation significantly affected the fitness of the whitefly. In both generations, the immature development times on the low-gossypol cultivar ZMS13 were significantly longer than those on the high-gossypol cultivar M9101 or medium-gossypol cultivar HZ401. The female fecundity and rate of population increase of the whitefly ranked in the following order: ZMS13 > HZ401 > M9101. On each cultivar, the immature development time was shorter and the immature survival rate was higher in the second generation than those in the first generation. Rate of increase was also higher in the second generation. These results demonstrated that the fitness of B. tabaci MEAM1 cryptic species on the low-gossypol cotton cultivar ZMS13 was higher than that on the medium- or high-gossypol cultivar. The comparison of the life histories of B. tabaci MEAM1 cryptic species on different cotton varieties is important for the development of an integrated pest management program of the whitefly by using plant secondary metabolic compounds.
利用植物次生代谢化合物是防治虫害的重要方法。本研究比较了两个连续世代的烟粉虱 MEAM1 隐种在三个不同棉酚水平的棉花品种上的生存、发育和繁殖情况。棉花品种和世代均显著影响粉虱的适合度。在两个世代中，低棉酚品种 ZMS13 上的若虫发育时间明显长于高棉酚品种 M9101 或中棉酚品种 HZ401。粉虱的雌性繁殖力和种群增长率排序如下：ZMS13 > HZ401 > M9101。在每个品种上，第二代的若虫发育时间短于第一代，若虫存活率高于第一代，增长率也高于第一代。这些结果表明，烟粉虱 MEAM1 隐种在低棉酚棉花品种 ZMS13 上的适合度高于中棉酚或高棉酚品种。比较烟粉虱 MEAM1 隐种在不同棉花品种上的生活史对于利用植物次生代谢化合物制定粉虱综合治理计划具有重要意义。
