The mirid bug Dicyphus tamaninii as a greenhouse whitefly and western flower thrips predator on cucumber

被引:40
作者
Gabarra, R
Castane, C
Albajes, R
机构
[1] IRTA, CTR CABRILS, UNITAT ENTOMOL APLICADA, E-08348 CABRILS, CATALUNYA, SPAIN
[2] IRTA, CTR UDL, AREA PROTECCIO CONREUS, E-25006 LLEIDA, CATALUNYA, SPAIN
关键词
Dicyphus tamaninii; Miridae; Trialeurodes vaporariorum; Aleyrodidae; Frankliniella occidentalis; Thripidae; cucumber; biological control;
D O I
10.1080/09583159550039666
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
Dicyphus tamaninii Wagner is a polyphagous predator that also feeds on plants. Its effectiveness against several pests has been tested and good results have been obtained on tomato, but not on cucumber. This paper reports the results of three exclusion cage experiments. The first was carried out to evaluate the effectiveness of D. tamaninii for reducing greenhouse whitefly and western flower thrips populations on cucumber. The second experiment examined the safety of the mil-id bug in terms of the potential for damaging cucumber fruits even at very low prey densities. Two predator (3 and 18 insects/plant) and variable prey release rates were used. The predator was able to reduce whitefly populations greatly, even at high initial pest infestation levels, especially at the higher release rate. Western power thrips populations were maintained at very low densities a few weeks after the predator had been introduced into cages at the two release rates tested. The mil-id bug was barely able to reproduce on cucumber in the absence of prey. Mirid feeding punctures on cucumber fruit or yield decrease due to the action of mirids were not observed. The potential of this mirid bug for inoculative and conservation biological control is discussed.
引用
收藏
页码:475 / 488
页数:14
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