科研之友
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摘要
We measured developmental time and survival rate of the immature stages as well as longevity and fecundity of the adult stage of sweetpotato whitefly, the B biotype of Bemisia tabaci, on seven marginal host plant species (defined as species on which the B biotype occurred occasionally in the field). Although causing little damage in the field, B. tabaci can exploit all of the marginal plant species as hosts. Solanum tuberosum, Lablab purpureus and Helianthus annuus can be regarded as preferred hosts compared to the other four. Our results revealed that most mortality occurs in the younger nymph stages of B. tabaci on the host plant species. Oviposition preference was not correlated with feeding preference. The shortest developmental time of B. tabaci was found on L. purpureus and H. annuus, and the highest survivorship and fecundity were observed on S. tuberosum and L. purpureus, respectively. The discrepancies are indicative of different strategies by B. tabaci in adjusting to novel host plants. Our findings provide a valuable basis for understanding the field population dynamics of B. tabaci, biotype B.
- 出版日期2012
- 单位中国农业科学院
