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首页> 外文期刊>Nigerian Journal of Entomology >Comparative Studies on Insect Pests of Cocoa Beans in Farm and Town Storage Sites and Insecticide Tolerance in the Major Pest, Corcyra cephalonica (Stainton)
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Comparative Studies on Insect Pests of Cocoa Beans in Farm and Town Storage Sites and Insecticide Tolerance in the Major Pest, Corcyra cephalonica (Stainton)

机译：农场和城镇储存场所可可豆的害虫与主要害虫（头球菌）的抗药性的比较研究

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摘要

A survey was conducted to study the insect pests of dried cocoa beans in farm and town storage sites in Ondo State, South West, Nigeria. Also a glass-vial bioassay was used in estimating tolerance to insecticide in adult Corcyra cephalonica (Stainton), the major moth pest found in the storage sites. Laboratory reared C. cephalonica were compared with first filial generation of the moths collected from farm and town storage sites in which control with insecticides has been inadequate. Investigations revealed that hygiene practices and storage of cocoa beans improved in the town storage sites than in the farm sites. There were significant differences (P<0.005, U-test) in insect populations at both sites. C. cephalonica was prominent at (he storage sites. Ahasverus advena (Walts) was present in the farm sites but absent in the town sites thereby indicating high moisture content in the cocoa beans at the farm level. Mouldiness in cocoa beans was moderate at the farm and town sites in the dry season while there was an increase in the wet season. Significant differences (P<0.05) in resistance among adult C. cephalonica were found among town, farm and laboratory reared groups using the insecticide, pirimiphosmethyl. Adult moths from the laboratory culture were least tolerant while those from town storage sites were the most tolerant species.
机译：进行了一项调查，以研究尼日利亚西南部翁多州的农场和城镇储存场所中可可豆干的害虫。还使用玻璃瓶小瓶生物测定法来估计成年Corcyra cephalonica（Stainton）中杀虫剂的耐受性，这是在储存地点发现的主要蛾类害虫。将实验室饲养的头孢菌与从农场和城镇储存地点收集的蛾子的第一孝子代进行比较，在该地点，对杀虫剂的控制不足。调查显示，城镇存储地点的卫生习惯和可可豆的存放情况比农场地点有所改善。在两个地点的昆虫种群中存在显着差异（P <0.005，U-检验）。头孢梭菌在（贮藏地点）很突出。农田中存在Ahasverus advena（Walts），但在城镇场所则没有，因此表明农场一级的可可豆中水分含量很高。在旱季，农场和乡镇站点处于潮湿季节，而在雨季则有所增加，在城镇，农场和实验室饲养的组中，使用杀虫剂除草甘膦杀虫剂的成年C. cephalonica之间的抗药性存在显着差异（P <0.05）。实验室培养物的耐受性最低，而城镇储存场所的耐受性最高。

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