LIFE-HISTORY TRAITS OF THE WHITEFLY, BEMISIA-TABACI (HOMOPTERA, ALEYRODIDAE) ON 6 VIRUS-INFECTED OR HEALTHY PLANT-SPECIES
LIFE-HISTORY TRAITS OF THE WHITEFLY, BEMISIA-TABACI (HOMOPTERA, ALEYRODIDAE) ON 6 VIRUS-INFECTED OR HEALTHY PLANT-SPECIES
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DOI：
10.1093/ee/20.4.1102
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发表时间：
1991-08-01
影响因子：
1.7
通讯作者：
BYRNE, DN
中科院分区：
文献类型：
--
作者：
COSTA, HS;BROWN, JK;BYRNE, DN
在某些情况下，植物病毒感染可以改变同形昆虫的寄主植物质量。在这些实验中，来自烟粉虱（Gennadius）种群的成年白蝇在南瓜上连续饲养了五年以上，暴露于感染了四种白蝇传播的植物病毒中的一种的六种植物中。比较了白蝇在病毒感染宿主上的生活史特征与暴露在相应健康宿主上的生活史特征。6种健康寄主的后代存活率和产卵率存在显著差异。在健康寄主上的存活率排名如下：西葫芦>哈密瓜=棉花=南瓜>生菜=番茄。在健康和感染病毒的寄主植物之间，产卵率和未成熟存活率存在差异。西瓜卷曲斑驳病毒（WCMoV/SLCV）侵染南瓜植株的成虫卵平均成虫率高于健康南瓜。与健康对照植株上的白蝇相比，WCMoV/ slcv感染的西葫芦、番茄枯萎病病毒感染的番茄和棉花皱叶病毒感染的棉花上的后代成虫的平均比例显著降低。对于其他病毒感染的健康组合，存活率没有显着差异。未观察到健康和感染植株的总游离氨基酸水平与产卵率或存活率之间的相关性。在健康植物和受感染植物上，产卵和存活率之间缺乏相关性，这表明烟粉虱不会评估寄主的适宜性来调节产卵，也不会评估寄主对后代存活的适宜性。
In some cases, infection by plant viruses can alter host plant quality for homopterous insects. In these experiments, adult whiteflies from a population of Bemisia tabaci (Gennadius) that had been reared continuously on pumpkin plants for more than five years, were exposed to six plant species infected with one of four whitefly-transmitted plant viruses. The life history traits of whiteflies on virus-infected hosts were compared to those of whiteflies exposed to corresponding healthy hosts. Significant differences were found in progeny survival and oviposition rate among the six healthy hosts. Survival on healthy hosts ranked as follows: zucchini > cantaloupe = cotton = pumpkin > lettuce = tomato. Oviposition and immature survival rates varied between healthy and virus-infected host plants. The mean proportion of eggs surviving to adulthood was higher on pumpkin plants infected with watermelon curly mottle strain of squash leaf curl virus (WCMoV/SLCV) than on healthy pumpkin. Significantly lower mean proportion of offspring survived to adulthood on WCMoV/SLCV-infected zucchini, chino del tomate virus-infected tomato, and cotton leaf crumple virus-infected cotton compared to whiteflies on healthy control plants. For other virus-infected-healthy combinations, there were no significant differences in survival rates. No correlation was observed between levels of total free amino acids in healthy and infected plants and rates of oviposition or survival. The lack of correlation between oviposition and survival rates on healthy and infected plants, suggests that B. tabaci does not assess host suitability to regulate oviposition with respect to the projected host suitability for offspring survival.