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首页> 外文期刊>Journal of Agricultural and Biological Science >Assessment of resistance status of the major storage insect pests of cocoa to Deltamethrin in Ghana
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Assessment of resistance status of the major storage insect pests of cocoa to Deltamethrin in Ghana

机译：加纳可可的主要贮藏害虫对溴氰菊酯的抗性状况评估

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Due to the versatility of insects, many of them quickly and easily develop resistance to insecticides they have been subjected to for long periods. Should resistance strains arise in a population, its control with same, and at times with similar, insecticides becomes more difficult. Possible development of resistance in the major insect pests of stored cocoa bean to Deltamethrin was studied at the Entomology laboratory of the Research Department of Quality Control Company of the Ghana COCOBOD at Tema. Samples of Ephestia cautella, Tribolium castaneum and Cryptolestes ferrugineus were collected from two sites with different insecticide use history, and exposed to different concentrations of Deltamethrin. The results showed that the response of the two populations of the insects followed a similar trend. Ephestia cautella was the most susceptible insect to Deltamethrin, where 100 % mortality was attained at 10 x 104 ppm concentration in both populations. Generally, the 10 x 104 ppm concentration achieved 90 % mortality in the Tribolium castaneum and Cryptolestes ferrugineus populations studied. Therefore all the three storage beetles tested for resistance to deltamethrin had not developed resistance to the insecticide.
机译：由于昆虫的多功能性，它们中的许多迅速而容易地发展了对已长期使用的杀虫剂的抗性。如果在种群中出现抗药性菌株，则用相同的抗药性，有时用相似的方法控制，杀虫剂就变得更加困难。在特马加纳COCOBOD质量控制公司研究部门的昆虫学实验室研究了储藏可可豆主要害虫对溴氰菊酯抗性的可能发展。从两个有不同杀虫剂使用历史的地点收集了埃弗氏小球藻，Tri藜和and药的样品，并将它们暴露于不同浓度的溴氰菊酯中。结果表明，两个昆虫种群的反应遵循相似的趋势。埃弗氏菌是对溴氰菊酯最敏感的昆虫，在这两个种群中，浓度为10 x 104 ppm时可达到100％的死亡率。通常，在所研究的cast藜和拟南芥（Cryptolestes ferrugineus）种群中，10 x 104 ppm的浓度可达到90％的死亡率。因此，经测试对溴氰菊酯具有抗性的所有三种储藏甲虫均未产生对杀虫剂的抗性。

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