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Geographical distribution and host range status of Tuta absoluta Meyrick (Lepidoptera: Gelechiidae) in Côte d'Ivoire
International Journal of Tropical Insect Science ( IF 1.2 ) Pub Date : 2021-06-09 , DOI: 10.1007/s42690-021-00554-z
K. A. J. Konan , S. W. M. Ouali-Ngoran , L. Fondio , G. O. Ochou , D. Koné , N. Desneux , T. Martin

The South American tomato pinworm, Tuta absoluta (Meyrick), is one of the major threats to tomato production. Larvae can cause losses of more than 80% of production. It was officially detected for the first time in West Africa in 2012, in Senegal, and was subsequently reported in most countries in this part of the continent. To identify infested vegetable production areas and determine reservoir plants in Côte d'Ivoire, surveys were carried out and pheromone traps set in the North, South, East, West and Center in the main tomato production areas of the country. The pest was detected in all surveyed areas, with the highest number of males (623 ± 19.5 insects/week) caught by pheromone traps in Bouaké in the Center of Côte d'Ivoire and a highest percentage of infested leaves, 96 ± 2.5%, was obtained in the locality of Agnibilékro in the East of the country. Tuta absoluta attacked all phenological stages of tomato plant in field. Larval mines were observed on the eggplant, Solanum melongena, the black nightshade, Solanum nigrum and the peppers, Capsicum annuum. Apart from tomato, T. absoluta seems to prefer S. melongena (41.64 ± 2.95% of infested leaves/plant; 4.88 ± 0.4 mine/plant) and S. nigrum (36.27 ± 3.42% of infested leaves/plant; 4.26 ± 0.6 mine/plant) more than C. annuum (13.48 ± 2.42% of infested leaves/plant and 1.38 ± 0.18 mine/plant). This study led to understanding that T. absoluta is well established in the main tomato production areas of Côte d’Ivoire, causing damage regardless of plant development stages and is present on other plant species.



中文翻译:

Tuta absoluta Meyrick(鳞翅目:Gelechiidae)在科特迪瓦的地理分布和寄主范围状况

南美番茄蛲虫Tuta absoluta(Meyrick),是番茄生产的主要威胁之一。幼虫可造成80%以上的产量损失。它于 2012 年在西非塞内加尔首次被正式发现,随后在该大陆该地区的大多数国家都有报道。为了确定科特迪瓦受侵染的蔬菜产区并确定水库植物,在该国主要番茄产区的北部、南部、东部、西部和中部进行了调查并设置了信息素诱捕器。在所有调查区域都检测到了这种害虫,在科特迪瓦中部的布瓦凯被信息素诱捕器捕获的雄性数量最多(623 ± 19.5 只昆虫/周),并且受侵染的叶子百分比最高,为 96 ± 2.5%,在该国东部的 Agnibilékro 地区获得。攻击田间番茄植株的所有物候阶段。在茄子Solanum melongena、黑茄属植物Solanum nigrum和辣椒Capsicum annuum上观察到幼虫地雷。除了番茄,T. absoluta似乎更喜欢S. melongena(41.64 ± 2.95% 的受侵染叶子/植株;4.88 ± 0.4 矿/植株)和S. nigrum(36.27 ± 3.42% 受侵染叶子/植株;4.26 ± 0.6 我矿/植物)超过C. annuum(受侵染的叶子/植物的 13.48 ± 2.42% 和 1.38 ± 0.18 矿山/植物)。这项研究使人们了解到T. absoluta 在科特迪瓦的主要番茄生产区已经很成熟,无论植物发育阶段如何都会造成损害,并且存在于其他植物物种中。

更新日期:2021-06-09
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