scholarly journals Optimization of dietary RNA interference delivery to western flower thrips Frankliniella occidentalis and onion thrips Thrips tabaci

2019 ◽  
Vol 103 (3) ◽  
Author(s):  
Awawing A. Andongma ◽  
Carolyn Greig ◽  
Paul J. Dyson ◽  
Natasha Flynn ◽  
Miranda M. A. Whitten
Keyword(s):  
Rna Interference ◽  
Frankliniella Occidentalis ◽  
Western Flower Thrips ◽  
Thrips Tabaci ◽  
Onion Thrips ◽  
Flower Thrips

scholarly journals Onion Thrips,Thrips tabaci, Have Gut Bacteria That are Closely Related to the Symbionts of the Western Flower Thrips,Frankliniella occidentalis

2008 ◽  
Vol 8 (23) ◽  
pp. 1-11 ◽  
Author(s):  
Egbert J. de Vries ◽  
André W. G. van der Wurff ◽  
Gerrit Jacobs ◽  
Johannes A. J. Breeuwer
Keyword(s):  
Frankliniella Occidentalis ◽  
Western Flower Thrips ◽  
Gut Bacteria ◽  
Thrips Tabaci ◽  
Onion Thrips ◽  
Flower Thrips

scholarly journals Evaluation of new volatile compounds as lures for western flower thrips and onion thrips in New Zealand and Spain

2014 ◽  
Vol 67 ◽  
pp. 175-183 ◽  
Author(s):  
D.A.J. Teulon ◽  
C. Casta?? ◽  
M-C Nielsen ◽  
A.M. El-Sayed ◽  
M.M. Davidson ◽  
...  
Keyword(s):  
New Zealand ◽  
Volatile Compounds ◽  
Frankliniella Occidentalis ◽  
Western Flower Thrips ◽  
Field Trials ◽  
Thrips Tabaci ◽  
Onion Thrips ◽  
Flower Thrips ◽  
Water Traps ◽  
White Water

Two glasshouse trials in a capsicum crop near Warkworth New Zealand in January 2011 and two field trials in a nectarine orchard near Lleida Spain in July 2013 were undertaken to determine if trap capture of Frankliniella occidentalis (western flower thrips WFT) and Thrips tabaci (onion thrips OT) could be increased by alternative volatile compounds beyond the known thrips attractant methyl isonicotinate (MI) On blue sticky board traps in the crop in New Zealand none of six alternative compounds tested caught more thrips (mostly WFT OT and two other species) than the Control traps In contrast to MI catches with the alternative lures were mostly significantly lower For both trials in the orchard in Spain using white water traps the highest numbers of WFT and OT were caught higher than most of the nine alternative odour compounds tested

scholarly journals Response of Frankliniella occidentalis and Thrips tabaci to thrips lures in California

2016 ◽  
Vol 69 ◽  
pp. 322-322
Author(s):  
M-C. Nielsen ◽  
R.C. Butler ◽  
D.A.J. Teulon
Keyword(s):  
Frankliniella Occidentalis ◽  
Western Flower Thrips ◽  
Field Trials ◽  
Thrips Tabaci ◽  
Onion Thrips ◽  
Flower Thrips ◽  
Air Temperatures ◽  
Baited Traps ◽  
Close Proximity ◽  
The University

Two field trials were undertaken in a fallow field adjacent to citrus trees at Agricultural Operations at the University of California Riverside (CA) USA to examine the efficacy of 14 chemical lures for attracting western flower thrips (WFT) Frankliniella occidentalis (Pergande) and onion thrips (OT) Thrips tabaci Lindeman to yellow sticky traps over 24 hours Air temperatures during the two trials ranged from 16 to 36oC In both trials traps with methyl isonicotinate caught significantly more (x28 and x34 respectively) female WFT than traps without lures No other chemical lure tested caught as many WFT as the methyl isonicotinatebaited traps In trial 1 traps with ethyl isonicotinate (not included in bioassay 2) caught significantly more female OT (x40) than traps without lures No other chemical lure tested caught as many OT as the ethyl isonicotinatebaited traps Because of the close proximity of the traps (10 m between traps) control traps were expected to have been influenced by odour from baited traps thereby reducing the apparent efficacy of the baited traps

scholarly journals Comparison of thrips sensitivity of three commercial chrysanthemum cultivars

Gradus ◽  
2020 ◽  
Vol 7 (3) ◽  
pp. 32-43
Author(s):  
Tímea Kelemen ◽  
János Ágoston
Keyword(s):  
Frankliniella Occidentalis ◽  
Host Preference ◽  
Western Flower Thrips ◽  
Thrips Tabaci ◽  
Cut Flowers ◽  
Onion Thrips ◽  
Flower Thrips ◽  
Thrips Species

Western flower thrips (Frankliniella occidentalis)and onion thrips (Thrips tabaci)are very important pests of vegetables and ornamentals grown under protected conditions. Both are vectors of several Orthotospovirusspecies. We wanted to know if these insects have a host preference and a gradation period, so we contacted a cut chrysanthemum grower in south Bács-Kiskun county if he would allow us to followupthe occurrence of these thrips species in his nursery. We carried out our trial from 2015 to 2019 on 3 cultivars. These cultivars are popular cut flowers in Hungary and are grown successfully by many growers. Basedon our results we were able to answer both questions.

scholarly journals Symbiont-mediated RNA interference in insects

2016 ◽  
Vol 283 (1825) ◽  
pp. 20160042 ◽  
Author(s):  
Miranda M. A. Whitten ◽  
Paul D. Facey ◽  
Ricardo Del Sol ◽  
Lorena T. Fernández-Martínez ◽  
Meirwyn C. Evans ◽  
...  
Keyword(s):  
Rna Interference ◽  
Frankliniella Occidentalis ◽  
Reverse Genetics ◽  
Western Flower Thrips ◽  
Significant Advance ◽  
Pest Species ◽  
Wild Type ◽  
Bacterial Strains ◽  
Flower Thrips ◽  
Blood Sucking

RNA interference (RNAi) methods for insects are often limited by problems with double-stranded (ds) RNA delivery, which restricts reverse genetics studies and the development of RNAi-based biocides. We therefore delegated to insect symbiotic bacteria the task of: (i) constitutive dsRNA synthesis and (ii) trauma-free delivery. RNaseIII-deficient, dsRNA-expressing bacterial strains were created from the symbionts of two very diverse pest species: a long-lived blood-sucking bug, Rhodnius prolixus , and a short-lived globally invasive polyphagous agricultural pest, western flower thrips ( Frankliniella occidentalis ). When ingested, the manipulated bacteria colonized the insects, successfully competed with the wild-type microflora, and sustainably mediated systemic knockdown phenotypes that were horizontally transmissible. This represents a significant advance in the ability to deliver RNAi, potentially to a large range of non-model insects.

scholarly journals Complexity and local specificity of the virome associated with tospovirus-transmitting thrips species.

2021 ◽  
Author(s):  
M. Chiapello ◽  
Lara Bosco ◽  
M. Ciuffo ◽  
S. Ottati ◽  
N. Salem ◽  
...  
Keyword(s):  
Frankliniella Occidentalis ◽  
High Throughput Sequencing ◽  
Western Flower Thrips ◽  
Thrips Tabaci ◽  
Model Systems ◽  
Horticultural Crops ◽  
Flower Thrips ◽  
Thrips Species ◽  
Repeated Sampling ◽  
Neohydatothrips Variabilis

Frankliniella occidentalis (western flower thrips=WFT) and Thrips tabaci (onion thrips=OT) are insect species that greatly impact horticultural crops through direct damage and their efficient vectoring of tomato spotted wilt virus and iris yellow spot virus. In this study we collected thrips of these species from 12 field populations in various regions in Italy. We also included one field population of Neohydatothrips variabilis (soybean thrips=ST) from the U.S.A. Total RNAseq from high-throughput sequencing (HTS) was used to assemble the virome and then we assigned putative viral contigs to each thrips sample by qRT-PCR. Excluding plant and fungal viruses, we were able to identify 61 viral segments, corresponding to 41 viruses: 14 were assigned to WFT, 17 to OT, one from ST and 9 viruses could not be assigned to any species based on our stringent criteria. All these viruses are putative representative of new species (with only the exception of a sobemo-like virus that is 100% identical to a virus recently characterized in ST) and some belong to new higher-ranking taxa. These additions to the viral phylogeny suggest previously undescribed evolutionary niches. Most of the Baltimore’s classes of RNA viruses were present (positive- and minus- strand and dsRNA viruses), but only one DNA virus was identified in our collection. Repeated sampling in a subset of locations in 2019 and 2020 and further virus characterization in a subset of four thrips populations maintained in laboratory allowed us to provide evidence of a locally persistent thrips core virome that characterizes each population. IMPORTANCE Harnessing the insect microbiome can result in new approaches to contain their populations or the damage they cause vectoring viruses of medical, veterinary, or agricultural importance. Persistent insect viruses are a neglected component of their microbiota. Here for the first time, we characterize the virome associated with the two model systems for tospovirus-transmitting thrips species, of utmost importance for the direct and indirect damage they cause to a number of different crops. The thrips virome here characterized includes several novel viruses, that in some cases reveal previously undescribed clades. More importantly, some of the viruses we describe are part of a core virome that is specific and consistently present in distinct geographical locations monitored over the years, hinting at a possible mutualistic symbiotic relationship with their host.

scholarly journals Diversity and seasonal fluctuation of thrips species on yellow tree lupin (Lupinus arboreus)

2009 ◽  
Vol 62 ◽  
pp. 63-68
Author(s):  
S. He ◽  
M-C. Nielsen ◽  
L.L. Fagan
Keyword(s):  
New Zealand ◽  
Relative Abundance ◽  
Frankliniella Occidentalis ◽  
Seasonal Fluctuation ◽  
Thrips Tabaci ◽  
Spatial And Temporal Variation ◽  
Onion Thrips ◽  
Lupinus Arboreus ◽  
Flower Thrips ◽  
Thrips Species

Yellow tree lupin (Lupinus arboreus) an abundant weed in New Zealand is host to several economically important thrips species The diversity and relative abundance of thrips found on yellow tree lupin were measured weekly via handcollections over the 2008/09 summer at two locations in Canterbury separated by 8 km From the 1540 thrips that were collected and slidemounted eight thrips species were identified The most abundant species was New Zealand flower thrips (Thrips obscuratus) followed by onion thrips (Thrips tabaci) the lupin strain of western flower thrips (Frankliniella occidentalis) Thrips vulgatissimus Thrips australis Limothrips cerealium Chirothrips manicatus and Tenothrips frici The largest variation in relative abundance occurred in early December with onion thrips dominant at Killinchy and western 64258;ower thrips dominant at Rakaia In late December at Rakaia the dominant species shifted to New Zealand 64258;ower thrips This indicates considerable spatial and temporal variation in relative abundance of thrips species

Sign in / Sign up

Export Citation Format

Share Document