Weaver Ant, Oecophylla Ionginoda （Latreille） （Hymenoptera： Formicidae） Activity Reduces Fruit Fly Damage in Citrus Orchards  

作　　者：Isaac Newton Ativor Kwame Afreh-Nuamah Maxwell Kelvin Billah Daniel Obeng-Ofori 

机构地区：[1]ARPPIS Sub-regional Centre for Western Africa, University of Ghana, Legon, Accra, PMB L 59, Ghana [2]Institute of Agricultural Research, University of Ghana, Legon, Accra, P.O. Box LG 68, Ghana [3]Department of Animal Biology and Conservation Science, University of Ghana, Legon, Accra, P.O. Box LG 67, Ghana [4]Department of Crop Science, University of Ghana, Legon, Accra, P.O. Box LG 44, Ghana

出　　处：《Journal of Agricultural Science and Technology(A)》2012年第4期449-458,共10页农业科学与技术（A）

摘　　要：Fruit flies are causing extensive socio-economic losses in citrus orchards in Ghana. The flies as quarantine pests have detrimental effects on the export market due to international trade regulations. Oecophylla species have been tested as biological control agents on other crops, and have shown great potential in reducing the effects of pests. The effectiveness of Oecophylla as a biocontrol agent of fruit flies was compared with insecticide, Cypermethrin ＋ Dimethoate （Cydim super~） at Forest and Horticultural Crops Research Centre, Kade, in the Eastern Region of Ghana. The results have shown that trees colonized by Oecophylla had between 6%-10% fly infestation and Cypermethrin ＋ Dimethoate （1614 mg a.i. mL~ tree＂1） recorded 3.0% infestation. Cypermethrin ＋ Dimethoate treatment recorded 3.50 ~ 0.87 dropped fruits, and Oecophylla colonized-trees recorded 15 to 19.20 -4- 3.61. Oecophylla colonized-trees recorded yield values from 12.90 to 15.20 tons ha-~ whilst Cypermethrin ＋ Dimethoate treatment recorded 27.90 tons hat fruit yield. Total number of fly landings in the presence of Oecophylla （72.00） was significantly lower than the absence of Oecophylla （114.20）. Set-up with no Oecophylla recorded the highest infestation index （71.17） while the presence recorded 45.83. These results suggest that Oecophylla longinoda can be used as a biocontrol agent for IPM programs in citrus orchards.

关 键 词：Oecophylla longinoda biological control fruit flies Ceratitis ditissima CITRUS Ghana. 

分 类 号：S436.67[农业科学—农业昆虫与害虫防治] S666[农业科学—植物保护]