Woltz J Megan, Wiman Nik G, Lee Jana C
Lindenwood University, 209 S Kingshighway, St. Charles, MO 63301.
USDA ARS, Horticultural Crops Research Unit, 3420 NW Orchard Ave., Corvallis, OR 97330.
J Econ Entomol. 2017 Aug 1;110(4):1938-1941. doi: 10.1093/jee/tox156.
Drosophila suzukii (Matsumura) (Diptera: Drosophilidae) and brown marmorated stink bug, Halyomorpha halys (Stål) (Hemiptera: Pentatomidae), are global economic pests that may co-occur on small fruits. We investigated whether fruit recently exposed to H. halys affected subsequent host use by D. suzukii. Laboratory no-choice and choice tests presented D. suzukii with H. halys-fed and unfed raspberries and blueberries immediately or 3 d after H. halys feeding. Resulting D. suzukii eggs, or larvae and pupae, were counted. The number of D. suzukii immatures among fed and unfed fruit was not significantly different in lab studies. There was no relationship between the intensity of H. halys feeding, as estimated by the number of stylet sheaths, and D. suzukii oviposition on blueberry. Lastly, field studies compared D. suzukii infestation between H. halys-fed and unfed raspberries. Raspberries were previously exposed to H. halys for 3 d or simultaneously exposed to both pests for 7 d. Natural infestation by D. suzukii in the field was similar among raspberries previously or simultaneously exposed to H. halys compared to control fruit.
铃木果蝇（松村）（双翅目：果蝇科）和褐边绿刺蛾，茶翅蝽（斯塔尔）（半翅目：蝽科），是全球经济害虫，可能同时出现在小果上。我们调查了最近接触过茶翅蝽的果实是否会影响铃木果蝇随后对寄主的利用。实验室无选择和选择试验向铃木果蝇提供了茶翅蝽取食过和未取食过的树莓和蓝莓，在茶翅蝽取食后立即或3天后进行。对产生的铃木果蝇卵、幼虫和蛹进行计数。在实验室研究中，取食和未取食果实中的铃木果蝇未成熟个体数量没有显著差异。以口针鞘数量估计的茶翅蝽取食强度与铃木果蝇在蓝莓上的产卵之间没有关系。最后，田间研究比较了茶翅蝽取食过和未取食过的树莓上的铃木果蝇侵染情况。树莓先前已暴露于茶翅蝽3天，或同时暴露于两种害虫7天。与对照果实相比，先前或同时暴露于茶翅蝽的树莓在田间被铃木果蝇自然侵染的情况相似。
