Lemoyne Pierre, Vincent Charles, Gaul Sonia, MacKenzie Kenna
Agriculture and Agri-Food Canada, Horticulture Research and Development Centre, 430 Gouin Blvd., Saint-Jean-sur-Richelieu, QC, Canada.
J Econ Entomol. 2008 Feb;101(1):118-25. doi: 10.1603/0022-0493(2008)101[118:kabmbo]2.0.co;2.
This study assessed the effects of Surround (kaolin) on several behavioral parameters of female blueberry maggot, Rhagoletis mendax Curran (Diptera: Tephritidae). First fruit visited, walking, cleaning, and oviposition behavior were quantified in two-choice and no-choice assays where females encountered Surround-treated and untreated fruit of highbush blueberries (Vaccinium spp.). In two-choice assays, females had a propensity (68%) to first visit untreated blueberries. In two-choice and no-choice tests, number of walking bouts and duration of walking bouts were significantly shorter on the Surround-treated than on untreated fruit. Few oviposition attempts on fruit were observed, irrespective of treatments and assays. Chromameter measurements showed significant modification of the blueberry skin color parameters lightness, hue, and saturation between untreated fruit compared with fruit dipped once or twice in a suspension of Surround. Oviposition trials with field-treated fruit showed that blueberries treated with Surround had fewer oviposition scars than the control, and this was more pronounced with weekly applications of Surround. Uneven coating of the fruit by Surround in field applications may have resulted in higher acceptance rates by flies than in blueberries individually dipped and used in laboratory trials.
本研究评估了高岭土（Surround）对雌性蓝莓实蝇Rhagoletis mendax Curran（双翅目：实蝇科）若干行为参数的影响。在二选一和无选择试验中，对首次访果、行走、清洁和产卵行为进行了量化，试验中雌性实蝇接触经高岭土处理和未经处理的高丛蓝莓（Vaccinium spp.）果实。在二选一试验中，雌性实蝇有首先访未经处理蓝莓的倾向（68%）。在二选一和无选择试验中，经高岭土处理的果实上的行走次数和行走持续时间显著短于未经处理的果实。无论处理方式和试验类型如何，在果实上观察到的产卵尝试都很少。色差仪测量显示，与在高岭土悬浮液中浸蘸一次或两次的果实相比，未经处理的果实的蓝莓果皮颜色参数明度、色调和饱和度有显著变化。对田间处理果实的产卵试验表明，经高岭土处理的蓝莓的产卵疤痕比对照少，每周施用高岭土时这种情况更明显。田间应用中高岭土对果实的覆盖不均匀，可能导致果蝇对其接受率高于实验室试验中单独浸蘸并使用的蓝莓。
