Potential of different isolates of entomopathogenic fungi from Thailand as biological control agents against western flower thrips, Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae)

2006 ◽  
Vol 113 (2) ◽  
pp. 74-80 ◽  
Author(s):  
C. Sengonca ◽  
M. Thungrabeab ◽  
P. Blaeser
Keyword(s):  
Biological Control ◽  
Entomopathogenic Fungi ◽  
Frankliniella Occidentalis ◽  
Western Flower Thrips ◽  
Biological Control Agents ◽  
Flower Thrips

scholarly journals Anthocoris nemorum (Heteroptera: Anthocoridae) as predator of cabbage pests – voracity and prey preference

2019 ◽  
Vol 21 (1) ◽  
pp. 12-18 ◽  
Author(s):  
Marie-Louise Rugholm Simonsen ◽  
Annie Enkegaard ◽  
Camilla Nordborg Bang ◽  
Lene Sigsgaard
Keyword(s):  
Biological Control ◽  
Plutella Xylostella ◽  
Frankliniella Occidentalis ◽  
Diamondback Moth ◽  
Western Flower Thrips ◽  
Potential Candidate ◽  
Model Species ◽  
Flower Thrips ◽  
Cabbage Pests ◽  
Cabbage Aphids

Laboratory experimentswere performed with adult female Anthocoris nemorum (Linnaeus) (Heteroptera: Anthocoridae) at 20°C ± 1°C, L16:D8, 60–70% RH to determine voracity and preference on cabbage aphids (Brevicoryne brassicae L.) (Hemiptera: Aphididae), diamondback moth larvae (Plutella xylostella L.) (Lepidoptera: Plutellidae) and Western flower thrips (Frankliniella occidentalis Pergande) (Thysanoptera: Thripidae) (model species for cabbage thrips (Thrips angusticeps Uzel) (Thysanoptera: Thripidae)). When offered individually, A. nemorum readily accepted all three species with no significant differences in consumption. When aphids and moth larvae were offered simultaneously, A. nemorum showed preference for the latter (numbers eaten and biomass consumed). When aphids and thrips were offered together, A. nemorum preferred thrips in terms of numbers eaten but preferred aphids in terms of biomass consumed. The results showed that A. nemorum is a voracious predator of B. brassicae, P. xylostella and F. occidentalis and can therefore be considered as a potential candidate for biological control in cabbage.

BIOLOGICAL CONTROL OF FUNGUS GNATS, BRADYSIA SPP. (DIPTERA: SCIARIDAE), AND WESTERN FLOWER THRIPS, FRANKLINIELLA OCCIDENTALS (PERGANDE) (THYSANOPTERA: THRIPIDAE), IN GREENHOUSES USING A SOIL-DWELLING PREDATORY MITE, GEOLAELAPS SP. NR. ACULEIFER (CANESTRINI) (ACARI: LAELAPIDAE)

1990 ◽  
Vol 122 (5) ◽  
pp. 975-983 ◽  
Author(s):  
David R. Gillespie ◽  
Donald M.J. Quiring
Keyword(s):  
Biological Control ◽  
Frankliniella Occidentalis ◽  
Western Flower Thrips ◽  
Predatory Mite ◽  
Flower Thrips ◽  
Fungus Gnats ◽  
Fungus Gnat ◽  
Greenhouse Cucumber ◽  
Crop Cycle ◽  
Hydroponically Grown

AbstractA soil-dwelling predatory mite, Geolaelaps sp. nr. aculeifer (Canestrini), introduced inundatively at a rate of 6000 mites per plant to the sawdust substrate of hydroponically grown, greenhouse cucumbers significantly reduced numbers of fungus gnat, Bradysia spp., larvae and adults over a 10-week period. Inundative introductions of 1600 mites per plant reduced emergence of western flower thrips, Frankliniella occidentalis (Pergande), adults to about 30% of that in the controls over a 40-day trial. An inoculative introduction of 125 mites per plant to cucumber plants in selected rows in a commercial greenhouse reduced peak fungus gnat numbers to about 20% of those in untreated rows. These results suggest that a single inoculative introduction of Geolaelaps sp. nr. aculeifer, early in the crop cycle, would maintain control of fungus gnat populations in greenhouse cucumber crops at an acceptable level. This predator would also contribute to biological control of western flower thrips by reducing emergence of adults.

scholarly journals Selection of promising fungal biological control agent of the western flower thrips Frankliniella occidentalis (Pergande)

2012 ◽  
Vol 54 (6) ◽  
pp. 487-493 ◽  
Author(s):  
S. Niassy ◽  
N.K. Maniania ◽  
S. Subramanian ◽  
L.M. Gitonga ◽  
D.M. Mburu ◽  
...  
Keyword(s):  
Biological Control ◽  
Frankliniella Occidentalis ◽  
Biological Control Agent ◽  
Western Flower Thrips ◽  
Control Agent ◽  
Flower Thrips ◽  
Selection Of

scholarly journals Laboratory and Greenhouse Evaluation of a Granular Formulation of Beauveria bassiana for Control of Western Flower Thrips, Frankliniella occidentalis

Insects ◽  
2019 ◽  
Vol 10 (2) ◽  
pp. 58 ◽  
Author(s):  
Xingrui Zhang ◽  
Zhongren Lei ◽  
Stuart Reitz ◽  
Shengyong Wu ◽  
Yulin Gao
Keyword(s):  
Soil Moisture ◽  
Beauveria Bassiana ◽  
Entomopathogenic Fungi ◽  
Frankliniella Occidentalis ◽  
Western Flower Thrips ◽  
Plant Viruses ◽  
Infection Process ◽  
The Body ◽  
Plant Production ◽  
Flower Thrips

Western flower thrips (WFT) is one of the most important pests of horticultural crops worldwide because it can damage many different crops and transmit various plant viruses. Given these significant impacts on plant production, novel methodologies are required to maximize regulation of WFT to minimize crop losses. One particular approach is to develop control strategies for the non-feeding, soil-dwelling stages of WFT. Control of these stages could be enhanced through the use of granules impregnated with entomopathogenic fungi mixed in the soil. The use of soil-applied fungi contrasts with existing approaches in which entomopathogenic fungi are formulated as oil-based suspensions or water-based wettable powders for foliar applications against the feeding stages of WFT. To examine the efficacy of this approach, we evaluated the effects of a granular formulation of Beauveria bassiana on the soil-dwelling, pupal phases of Frankliniella occidentalis in laboratory bioassays and greenhouse experiments. Based on micromorphological observations of fungal conidia during the infection process after treatment of WFT with a B. bassiana suspension, fungal conidia complete the process of surface attachment, germination, and penetration of the body wall of the WFT pupa and enter the host within 60 h of treatment. Given these results, we undertook a controlled greenhouse experiment and applied B. bassiana granules to soil used to cultivate eggplants. Populations of F. occidentalis on eggplants grown in treated soil were 70% lower than those on plants grown in the untreated soil after 8 weeks. Furthermore, when measuring the survival and growth of B. bassiana on granules under different soil moisture conditions, survival was greatest when the soil moisture content was kept at 20%. These results indicate that the application of B. bassiana-impregnated granules could prove to be an effective biological control strategy for use against F. occidentalis under greenhouse conditions.

COMPETITION BETWEEN ORIUS TRISTICOLOR (WHITE) (HEMIPTERA: ANTHOCORIDAE) AND AMBLYSEIUS CUCUMERIS (OUDEMANS) (ACARI: PHYTOSEIIDAE) FEEDING ON FRANKLINIELLA OCCIDENTALIS (PERGANDE) (THYSANOPTERA: THRIPIDAE)

1992 ◽  
Vol 124 (6) ◽  
pp. 1123-1128 ◽  
Author(s):  
David R. Gillespie ◽  
D.J.M. Quiring
Keyword(s):  
Biological Control ◽  
Frankliniella Occidentalis ◽  
Western Flower Thrips ◽  
Vegetable Crops ◽  
Amblyseius Cucumeris ◽  
Flower Thrips ◽  
Greenhouse Vegetable

AbstractThe competition between Orius tristicoior (White) and Amblyseius cucumeris (Oude-mans), both preying on western flower thrips, Frankliniella occidentaiis (Pergande), was assessed. On single leaves in smail cages, mortality of A. cucumeris due to O. tristicoior was inversely proportional to thrips density; thrips mortality due to O. tristicoior was unaffected by A. cucumeris density. The proportion of A. cucumeris in the prey eaten was consistently less than its proportion in the prey initially available, both when thrips density varied and when A. cucumeris density varied. These relationships held for both immature and adult thrips. These results suggest that O. tristicoior and A. cucumeris could be used simultaneously for biological control of western flower thrips in greenhouse vegetable crops.

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