Population Dynamics of Western Flower Thrips (Thysanoptera: Thripidae) in Nectarine Orchards in British Columbia

2000 ◽  
Vol 93 (2) ◽  
pp. 264-275 ◽  
Author(s):  
Isobel A. Pearsall ◽  
Judith H. Myers
Keyword(s):  
British Columbia ◽  
Population Dynamics ◽  
Western Flower Thrips ◽  
Flower Thrips

scholarly journals Frankliniella Occidentalis (Thysanoptera: Thripidae) Population Dynamics on

2012 ◽  
Vol 69 (1) ◽  
Author(s):  
Ion OLTEAN ◽  
Anca Dafina COVACI ◽  
Teodora FLORIAN ◽  
Cristina MATEI
Keyword(s):  
Population Dynamics ◽  
Sex Ratio ◽  
Tomato Spotted Wilt Virus ◽  
Frankliniella Occidentalis ◽  
Western Flower Thrips ◽  
Flower Thrips ◽  
Tomato Spotted Wilt ◽  
The One ◽  
Wilt Virus ◽  
Treatment Application

Western flower thrips, Frankliniella occidentalis (Pergande) is an important crop pest and a vector of tomato spotted wilt virus (TSWV) in many areas of the world. Its feeding can cause scarring and deformations on leaves and fruit, with seedlings and soft tissue particularly prone to feeding damage. Cucumbers and other vegetable are susceptible to fruit scarring. Population dynamics of western flower thrips was monitored both in field and protected spaces throughout different methods and on different ornamental and vegetables hosts. In this paper results regarding population dynamic on cucumber greenhouse crop are presented. Studies were conducted throughout five weeks. Shaken method was used. Ten leaves from the bottom of the plant, ten from the middle, ten from the tip of the plant and ten flowers were weekly sampled. Mean temperature and treatments applications were recorded. The fallen larvae and adults were counted. Females and males were separately noted. Sex ratio influence and spatial distribution was also followed. Data analysis demonstrated that thrips preferred to feed on younger leaves situated on tip of the plant. There was a very low difference between sex ratio in leaves as compared with the one in flowers. Regarding population dynamics of thrips on whole study period the trend was of increasing, thus treatment application were less efficient and proves its high pesticide resistance character.

PEST MANAGEMENT: EXPERIENCE IN SIX BRITISH COLUMBIA APPLE ORCHARDS

1975 ◽  
Vol 107 (8) ◽  
pp. 873-877 ◽  
Author(s):  
Harold F. Madsen ◽  
H. Fred Peters ◽  
Jerry M. Vakenti
Keyword(s):  
British Columbia ◽  
Pest Management ◽  
Pest Control ◽  
Frankliniella Occidentalis ◽  
Western Flower Thrips ◽  
Flower Thrips ◽  
Treatment Thresholds ◽  
Management Experience ◽  
Campylomma Verbasci ◽  
Archips Argyrospilus

AbstractA 2-year study on management of apple pests was carried out on six orchards in the interior of British Columbia. Sample techniques and treatment thresholds were satisfactory for most pests with the exception of fruittree leafroller, Archips argyrospilus (Walker), western flower thrips, Frankliniella occidentalis (Pergande), and the mirid Campylomma verbasci (Meyer). The number of chemical sprays per orchard averaged eight when the study was initiated. In 1973, the sprays required for pest control were reduced to an average of 5.6 per orchard, and in 1974, this figure was further reduced to 3.1. This reduction in chemical sprays was accomplished without an increase in insect or mite injury to fruit or foliage.

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