The mitochondrial cytochrome oxidase I gene (mtCO1) and the ribosomal internal transcribed spacer 2 region (ITS2) are among the most widely used molecular markers for insect taxonomic characterization. Three economically important species of thrips, Scirtothripsdorsalis, Thripspalmi, and Frankliniellaoccidentalis were selected to examine the extent of intragenomic variation within these two mar...

Laboratory studies were conducted to develop ultralow oxygen (ULO) treatment for controlling western flower thrips, Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae), on broccoli at a low temperature of 1 degree C. Complete control was achieved in 5 d at 0.003% oxygen. Oxygen level affected efficacy of ULO treatment. At a higher oxygen level of 0.03%, 6-d treatment killed -85% of ...

A new species-group in the genus Thrips is designated as Thrips formosanus group from Asia and Australia. This includes the following six species: T. floreus Kurosawa from Japan, T. formosanus Priesner from Taiwan, T. obscuripes Priesner and T. rostratus Priesner from Java, T. tanicus Bhatti from India and T. hoddlei Mound and Masumoto from Australia. One new species, Thrips moundi sp. n., is d...

J. Econ. Entomo!. 75: 492-494·(1982) Studies conducted to determine Thrips tabaci Lindeman damage and contamination in sauerkraut revealed that both occur at detectable levelsin processedcabbage, althoughsuch levelsare much lower than predicted from examination of fresh cabbage. Addition of the chemical preservativessodium benzoate (0.1%) and potassiummetabisulfite (0.05%) had no effect on plan...

c f This paper presents the results of tests to determine the host range of Sericothrips staphylinus Haliday (Thysanoptera: Thripidae), an agent selected for control of Ulex europaeus (Fabaceae). It also describes the biology of the thrips and its release and establishment in New Zealand and Hawaii. Eighty-three plant species were tested. Research was conducted in several institutions by use of...

Feeding by the western flower thrips, Frankliniella occidentalis (Pergande), causes damage to the fruits of vegetables, and the species is the key vector of Tomato spotted wilt virus . Frankliniella tritici (Fitch) and Frankliniella bispinosa (Morgan) are not pests of fruiting vegetables. Both species compete with F. occidentalis . Effective management of F. occidentalis in pepper integrates co...

The impact of water-soluble carbohydrate composition in relation to damage levels of onion thrips (Thrips tabaci Lindeman), were studied under field conditions at the Experimental Field of the Biotechnical Faculty in Ljubljana on 7 cabbage cultivar (Brassica oleracea L. var. capitata). Onion thrips showed weak preference on cabbage heads with high amount of total carbohydrate, fructose and gluc...

U.S. exported lettuce, broccoli, asparagus, and strawberries oftenharborwesternßower thrips, Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae), a quarantined pest in Taiwan, and therefore require quarantine treatment. Fumigation with diluted pure phosphine at a low temperatureof 2 Cwas studied to controlwesternßower thrips and todetermineeffects on thequality of the treated produc...

Identifying locations where onion thrips, Thrips tabaci Lindeman (Thysanoptera: Thripidae), overwinter and subsequently disperse is important for designing control strategies. In upstate New York from 2003 through 2006, potential overwintering sites in the commercial onion, Allium cepa L., cropping system were investigated early in the spring before onion seedling emergence and again late in th...

The characteristics of a thrips-non-transmissible isolate of Tomato spotted wilt virus (TSWV), designated TSWV-M, were compared with those of a thrips-transmissible isolate, designated TSWV-T. TSWV-M showed a narrower host range than TSWV-T. Adult thrips failed to transmit TSWV-M, although the vector acquired the virus during the larval stages. TSWV-M was detected by RT-PCR in adult thrips bodi...