Zhang X-M, Yang N-W, Wan F-H, Lövei GL (2014): Density and seasonal dynamics of Bemisia tabaci (Gennadius) Mediterranean on common crops and weeds around cotton fields in Northern China. Journal of Integrative Agriculture 13: 2211-2220. DOI:10.1016/S2095-3119(13)60613-9
BACKGROUND: The two common whitefly species, Bemisia tabaci (Gennadius) MEAM1 and Trialeurodes vaporariorum (Westwood) often co-occur on their host plants. We examined the effect of host plant occupation by one species on later arriving conspecific individuals or on the other competing species.
RESULTS: Resource pre-occupied by T. vaporariorum had mostly negative effects on the life history parameters of later-arriving conspecifics. Red-eyed nymph and immature survival of T. vaporariorum decreased when resource was pre-occupied by conspecifics, irrespective of the previous occupation scenario. However, resource pre-occupied by T. vaporariorum had only minor detrimental effects on the performance of later-arriving B. tabaci MEAM1. In the opposite colonization sequence, previous occupation by B. tabaci MEAM1 had no significant effects on life history parameters of later-arriving conspecifics, but severe detrimental effects were observed on the performance of later-arriving T. vaporariorum. Total immature survival of T. vaporariorum decreased in both weak and strong previous occupation situations by B. tabaci MEAM1.
CONCLUSION: The interspecific interactions between B. tabaci MEAM1 and T. vaporariorum were asymmetric, with B. tabaci MEAM1 being the superior competitor. This superiority could partially explain the rapid spread of B. tabaci MEAM1 in China
Bemisia tabaci, cryptic species, MEAM1, asymmetric competition, interspecific interaction, resource previous occupation, Trialeurodes vaporariorum