Little Catherine M, Chapman Thomas W, Moreau Debra L, Hillier N Kirk
Department of Biology, Acadia University, Wolfville, NS, Canada.
Department of Biology, Memorial University of Newfoundland and Labrador, St John's, NL, Canada.
Pest Manag Sci. 2017 Jan;73(1):160-166. doi: 10.1002/ps.4366. Epub 2016 Aug 31.
Drosophila suzukii Matsumara has recently emerged as a major invasive pest species in soft-skinned fruits in berries throughout North America and Europe. Its distribution has spread so rapidly that little is known of the extent of fruit susceptibility, particularly in boreal regions. Populations of D. suzukii increase dramatically in late summer in boreal regions, concurrent with fruiting seasons for commercially and culturally significant fruits and berries. We tested fruit preference and susceptibility of lingonberry, blueberry, chokecherry, sea buckthorn and raspberry fruits to D. suzukii.
Female D. suzukii attempted to oviposit on all fruit types tested. Fruits with lower brix and lower pH levels were preferred in choice tests. Undamaged lingonberries were relatively safe from infestation; however, bruised or frost-damaged fruits were easily penetrated. Sea buckthorn and raspberry fruits were highly preferred.
Although blueberry growers have experienced severe economic crop losses due to D. suzukii, we have found that blueberries were the least preferred of the fruits tested. This suggests that D. suzukii are largely opportunistic and highlights the importance of fruit phenology in fruit susceptibility. © 2016 Society of Chemical Industry.
铃木氏果蝇（Drosophila suzukii Matsumara）最近已成为北美和欧洲浆果类软皮水果中的主要入侵害虫物种。其分布扩散速度极快，以至于人们对水果易感性的程度知之甚少，尤其是在北方地区。在北方地区，铃木氏果蝇的种群数量在夏末会急剧增加，这与具有商业和文化意义的水果及浆果的结果季节同步。我们测试了越橘、蓝莓、苦樱桃、沙棘和覆盆子果实对铃木氏果蝇的果实偏好性和易感性。
铃木氏果蝇雌虫试图在所有测试的果实类型上产卵。在选择测试中，糖度较低和pH值较低的果实更受青睐。未受损的越橘相对不易受到侵害；然而，有瘀伤或受冻害的果实很容易被穿透。沙棘和覆盆子果实是最受青睐的。
尽管蓝莓种植者因铃木氏果蝇遭受了严重的经济作物损失，但我们发现，在测试的果实中，蓝莓是最不受青睐的。这表明铃木氏果蝇在很大程度上是机会主义者，并突出了果实物候学在果实易感性方面的重要性。© 2016化学工业协会。
