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首页> 外文期刊>Journal of Economic Entomology >New Approach of Beauveria bassiana to Control the Red Palm Weevil (Coleoptera: Curculionidae) by Trapping Technique
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New Approach of Beauveria bassiana to Control the Red Palm Weevil (Coleoptera: Curculionidae) by Trapping Technique

机译：球孢白僵菌诱捕技术防治红掌象甲的新方法

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摘要

This work is the first study to investigate the efficacy of the commercial formulation of Beauveria bassiana (Broadband) to control adults of red palm weevil (Rhynchophorus ferrugineus (Olivier)). This fungus could be applied as one of the biological tactics in controlling red palm weevil. Bioassay experiments for medium lethal concentrate and medium time to cause death of 50% of red palm weevil adults were carried out. The result showed that the LC50 of B. bassiana (Broadband) was 2.19 x 10(7) and 2.76 x 10(6) spores/ml at 9 and 23 d of treatment, respectively. The LT50 was 13.95 and 4.15 d for concentration of 1 x 10(7) and 1 x 10(8) spores/ml, respectively, whereas 1 x 10(9) spores/ml caused 100% mortality after 24 h. Additionally, a red palm weevil pheromone trap was designed to attract the adults to be contaminated with spores of Broadband, which was applied to the sackcloth fabric that coated the internal surfaces of the bucket trap. The mating behavior was studied to determine direct and indirect infection of the spores from male to female and vice versa. The results showed a high efficacy of Broadband suspension at 1 x 10(9) spores/ml; 40 ml of suspension at this concentration treated to cloth in a trap caused death of contaminated adults with B. bassiana spores directly and indirectly. The 100% mortality was obtained even after 13 d of traps treatment with 40 ml of the suspension at 1 x 10(9) spores/ ml.
机译：这项工作是第一个研究球孢白僵菌（Broadveria bassiana）（宽带）商业制剂控制红掌象鼻虫（Rhynchophorus ferrugineus（Olivier））成虫的功效的第一项研究。该真菌可作为控制红掌象鼻虫的生物学策略之一。进行了中等致死浓度和中等时间导致50％红掌象鼻虫成虫死亡的生物测定实验。结果表明，在处理9天和23天时，球孢白僵菌（宽带）的LC50分别为2.19 x 10（7）和2.76 x 10（6）孢子/ ml。 LT50为13.95和4.15 d，浓度分别为1 x 10（7）和1 x 10（8）孢子/ ml，而1 x 10（9）孢子/ ml导致24小时后100％死亡率。此外，还设计了一种红色棕榈象鼻虫信息素诱集装置，以吸引成年人，使其受到宽带孢子的污染，该技术被应用于涂在桶形诱集装置内表面的麻布上。研究了交配行为以确定孢子从雄性到雌性的直接和间接感染，反之亦然。结果表明，以1 x 10（9）孢子/ ml的宽带悬浮液具有很高的功效;在诱捕器中用布处理此浓度的40 ml悬浮液，直接或间接导致受球孢杆菌孢子污染的成年人死亡。甚至在用40 ml悬浮液以1 x 10（9）孢子/ ml处理捕集阱13天后，仍获得100％的死亡率。

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