Abstract
Spotted wing drosophila, Drosophila suzukii (Matsumura) (SWD), is emerging as the most significant pest of berries and stone fruits worldwide. With a broad host range, thin-skinned berries are particularly susceptible to infestation, and fruit producers are desperate for methods to control this pest. One of the keys to developing an integrated management program for SWD is to understand host preference and varietal susceptibility of highly susceptible crop hosts. Working in replicated small plots, experiments were conducted to evaluate differences in varietal susceptibility on cold hardy red primocane fruiting raspberries. Significant differences were observed in both the level of infestation and in the average number of larvae per berry by variety. In addition, it appears that there is a significant negative correlation between the level of infestation and the number of larvae per fruit with the time of sampling, but only an interaction of variety and time for the number of larvae per berry. These data provide a better understanding of the biology and ecology of this pest which is critical in refining current management practices. Knowledge of these interactions can aid in optimizing control strategies such as fine-tuning spatial and temporal control measures, which may be particularly important for early season infestations.
Highlights
Spotted wing drosophila, Drosophila suzukii (Matsumura) (SWD), is a significant worldwide pest of berries andHow to cite this paper: Sward, G.F.H., Glass, S.E. and Philips, C.R. (2016) The Phenology of Infestations and the Impacts of Different Varieties of Cold Hardy Red Raspberries on Drosophila suzukii
Successful integrated pest management (IPM) is dependent on understanding where and when pests occur before taking action
A major challenge with the rapids arrival of invasive species such as SWD is our lack of fundamental knowledge about their biology and ecology
Summary
Drosophila suzukii (Matsumura) (SWD), is a significant worldwide pest of berries andHow to cite this paper: Sward, G.F.H., Glass, S.E. and Philips, C.R. (2016) The Phenology of Infestations and the Impacts of Different Varieties of Cold Hardy Red Raspberries on Drosophila suzukii. (2016) The Phenology of Infestations and the Impacts of Different Varieties of Cold Hardy Red Raspberries on Drosophila suzukii. Since its first detection in California during the 2008 growing season, SWD has spread throughout the U.S causing significant yield losses, often reaching 100%. Increased chemical inputs add substantial new costs to growing operations and increased risks to surrounding ecosystems, leading to numerous growers abandoning these crops, and substantial economic losses. These dramatic increases in pesticide use with combined yield losses are leading to estimated cost approaching $1 billion annually [1] [6]-[9]
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