Delpoux Camille, Deguine Jean-Philippe
CIRAD, UPR HortSys, BP 180, 97455 Saint-Pierre Cedex, La Réunion, France.
CIRAD, UMR PVBMT CIRAD/University of La Réunion, 7 chemin de l'Irat, Ligne Paradis, 97410 Saint-Pierre, La Réunion, France
J Insect Sci. 2015 Feb 16;15(1):177. doi: 10.1093/jisesa/ieu177. Print 2015.
Three species of fruit flies cause serious damage to cucurbit crops on Reunion Island: Bactrocera cucurbitae (Diptera: Tephritidae) (Coquillett 1899), Dacus ciliatus (Loew 1901), and Dacus demmerezi (Bezzi 1917). To control them, a program of agroecological management of cucurbit flies has been implemented based on the application of Synéis-appât, especially spot sprays on corn borders. However, the high rainfall on Reunion Island limits the long-term efficiency of the bait; in addition, this method cannot be used for large chayote trellises, because corn borders cannot be planted around them. The aim of this study was to design a bait station adapted to prevailing conditions on Reunion Island. An 'umbrella trap' tested in Taiwan was used as a reference to compare its efficacy with our local bait station. Experiments were conducted in field cages on B. cucurbitae to test different characteristics of bait stations and to construct one using local materials. Results were validated in the field. The attractiveness of the bait station was related mainly to the color of the external surface, yellow being the most attractive color. The efficacy of the bait station with respect to fly mortality was found to be linked to the accessibility of the bait, and direct application of Synéis-appât on the bait station was found to be the most efficient. In the field, B. cucurbitae were more attracted to the local bait station than to the umbrella trap, while the two other fly species displayed equal attraction to both trap types. Our local bait station is a useful alternative to spot sprays of Synéis-appât and is now included in a local pest management program and is well accepted by farmers.
瓜实蝇（双翅目：实蝇科）（科基利特，1899年）、具鬃果实蝇（勒夫，1901年）和德氏果实蝇（贝齐，1917年）。为了控制这些果蝇，基于应用糖醋液（Synéis-appât）实施了一项葫芦科果蝇农业生态管理计划，特别是在玉米田边进行点喷。然而，留尼汪岛的高降雨量限制了诱饵的长期有效性；此外，这种方法不能用于大型佛手瓜棚架，因为无法在其周围种植玉米田边作物。本研究的目的是设计一种适合留尼汪岛当地条件的诱饵站。在台湾测试过的“伞式诱捕器”被用作参考，以比较其与我们当地诱饵站的效果。在田间网室中对瓜实蝇进行实验，以测试诱饵站的不同特性，并使用当地材料构建一个诱饵站。结果在田间得到验证。诱饵站的吸引力主要与外表面颜色有关，黄色是最具吸引力的颜色。发现诱饵站对果蝇死亡率的效果与诱饵的可及性有关，并且发现将糖醋液直接应用于诱饵站是最有效的。在田间，瓜实蝇对当地诱饵站的吸引力比对伞式诱捕器的吸引力更大，而另外两种果蝇对两种诱捕器的吸引力相同。我们当地的诱饵站是糖醋液点喷的一种有用替代方法，现在已被纳入当地的害虫管理计划，并受到农民的广泛接受。
