scholarly journals A new harmful thrips species in orange in Antalya Province: Scirtothips dorsalis Hood (Thysanoptera: Thripidae)

2021 ◽  
pp. 273-277
Author(s):  
Ekrem ATAKAN ◽  
Serkan PEHLİVAN
Keyword(s):  
Thrips Species

Geographical and interspecific variation in susceptibility of three common thrips species to the insecticide, spinetoram

2019 ◽  
Author(s):  
Yong-Fu Gao ◽  
Ya-Jun Gong ◽  
Li-Jun Cao ◽  
Jin-Cui Chen ◽  
Yu-Lin Gao ◽  
...  
Keyword(s):  
Interspecific Variation ◽  
Thrips Species

scholarly journals Progression of Watermelon Bud Necrosis Virus Infection in Its Vector, Thrips palmi

Cells ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 392
Author(s):  
Amalendu Ghosh ◽  
Priti ◽  
Bikash Mandal ◽  
Ralf G. Dietzgen
Keyword(s):  
Virus Infection ◽  
Salivary Glands ◽  
Frankliniella Occidentalis ◽  
Western Flower Thrips ◽  
Malpighian Tubules ◽  
Necrosis Virus ◽  
Posterior Portion ◽  
Thrips Palmi ◽  
Thrips Species ◽  
Anterior Midgut

Thrips are important pests of agricultural, horticultural, and forest crops worldwide. In addition to direct damages caused by feeding, several thrips species can transmit diverse tospoviruses. The present understanding of thrips–tospovirus relationships is largely based on studies of tomato spotted wilt virus (TSWV) and Western flower thrips (Frankliniella occidentalis). Little is known about other predominant tospoviruses and their thrips vectors. In this study, we report the progression of watermelon bud necrosis virus (WBNV) infection in its vector, melon thrips (Thrips palmi). Virus infection was visualized in different life stages of thrips using WBNV-nucleocapsid protein antibodies detected with FITC-conjugated secondary antibodies. The anterior midgut was the first to be infected with WBNV in the first instar larvae. The midgut of T. palmi was connected to the principal salivary glands (PSG) via ligaments and the tubular salivary glands (TSG). The infection progressed to the PSG primarily through the connecting ligaments during early larval instars. The TSG may also have an ancillary role in disseminating WBNV from the midgut to PSG in older instars of T. palmi. Infection of WBNV was also spread to the Malpighian tubules, hindgut, and posterior portion of the foregut during the adult stage. Maximum virus-specific fluorescence in the anterior midgut and PSG indicated the primary sites for WBNV replication. These findings will help to better understand the thrips–tospovirus molecular relationships and identify novel potential targets for their management. To our knowledge, this is the first report of the WBNV dissemination path in its vector, T. palmi.

scholarly journals Species Composition of Thrips (Thysanoptera: Thripidae) in Strawberry High Tunnels in Denmark

Insects ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 208
Author(s):  
Helene Nielsen ◽  
Lene Sigsgaard ◽  
Sverre Kobro ◽  
Nauja L. Jensen ◽  
Stine K. Jacobsen
Keyword(s):  
Biological Control ◽  
Species Composition ◽  
Thrips Tabaci ◽  
Field Margins ◽  
Thrips Species ◽  
High Tunnels ◽  
Major Pest ◽  
Production Knowledge ◽  
Sampling Times

Thrips are a major pest in protected strawberry production. Knowledge of thrips species composition could be instrumental for improved thrips management, but very little is known about which species are present in strawberries grown in high-tunnels in Denmark. Thrips (adults and larvae) were sampled in two strawberry tunnels of the cultivars Murano and Furore from May to August 2018, in the middle and in the edges of the tunnels. The most abundant thrips species found in the tunnels were Frankliniella intonsa and Thrips tabaci adults. Frankliniella intonsa were also the most frequently found species of the immatures sampled, followed by T. tabaci larvae, and other species. The number of thrips differed between the two cultivars, sampling times and location in the tunnel. Frankliniella intonsa was more abundant in the middle of the tunnels, while T. tabaci was more abundant in the edge of the tunnels adjacent to the field margins. The number of thrips peaked by the end of July. Both chemical and biological control should consider species composition and occurrence; hence, a fundamental first step for thrips management is to identify the species present on the target crop.

scholarly journals The Species Composition and Seasonal Dynamics of Thrips (Thysanoptera) Populations on Maize (Zea Mays L.) in Southeastern Poland

2011 ◽  
Vol 51 (3) ◽  
pp. 210-216 ◽  
Author(s):  
Halina Kucharczyk ◽  
Paweł Bereś ◽  
Zbigniew Dąbrowski
Keyword(s):  
Zea Mays ◽  
Species Composition ◽  
Seasonal Dynamics ◽  
Food Source ◽  
Zea Mays L ◽  
Maize Plant ◽  
Seasonal Abundance ◽  
Immature Stages ◽  
Thrips Species

The Species Composition and Seasonal Dynamics of Thrips (Thysanoptera) Populations on Maize (Zea MaysL.) in Southeastern PolandThrips species composition and seasonal abundance was studied on maize crops during two seasons (2006-2007), in southeastern Poland. Altogether 21 species have been identified, among themFrankliniella tenuicornis(Uzel 1895) andHaplothrips aculeatus(Fabricius 1803) which are a graminicolous species and were eudominants, comprising 96.8% in 2006 and 82.0% in 2007 of all collected specimens. Other species occurred only in low numbers. The frequent and numerous presence ofF. tenuicornisspecies in their immature stages in the samples, confirmed the role of the maize plant as the host.H. aculeatusprobably chose maize as a food source and substitute plant for breeding.

scholarly journals Characterization of E93 in neometabolous thrips Frankliniella occidentalis and Haplothrips brevitubus

PLoS ONE ◽  
2021 ◽  
Vol 16 (7) ◽  
pp. e0254963
Author(s):  
Youhei Suzuki ◽  
Takahiro Shiotsuki ◽  
Akiya Jouraku ◽  
Ken Miura ◽  
Chieka Minakuchi
Keyword(s):  
Larval Stage ◽  
Hormonal Regulation ◽  
Frankliniella Occidentalis ◽  
Expression Profiles ◽  
Mrna Levels ◽  
Transcript Levels ◽  
Adult Transition ◽  
Thrips Species ◽  
Insect Metamorphosis ◽  
Krüppel Homolog 1

Insect metamorphosis into an adult occurs after the juvenile hormone (JH) titer decreases at the end of the juvenile stage. This generally coincides with decreased transcript levels of JH-response transcription factors Krüppel homolog 1 (Kr-h1) and broad (br), and increased transcript levels of the adult specifier E93. Thrips (Thysanoptera) develop through inactive and non-feeding stages referred to as “propupa” and “pupa”, and this type of distinctive metamorphosis is called neometaboly. To understand the mechanisms of hormonal regulation in thrips metamorphosis, we previously analyzed the transcript levels of Kr-h1 and br in two thrips species, Frankliniella occidentalis (Thripidae) and Haplothrips brevitubus (Phlaeothripidae). In both species, the transcript levels of Kr-h1 and br decreased in the “propupal” and “pupal” stages, and their transcription was upregulated by exogenous JH mimic treatment. Here we analyzed the developmental profiles of E93 in these two thrips species. Quantitative RT-PCR revealed that E93 expression started to increase at the end of the larval stage in F. occidentalis and in the “propupal” stage of H. brevitubus, as Kr-h1 and br mRNA levels decreased. Treatment with an exogenous JH mimic at the onset of metamorphosis prevented pupal-adult transition and caused repression of E93. These results indicated that E93 is involved in adult differentiation after JH titer decreases at the end of the larval stage of thrips. By comparing the expression profiles of Kr-h1, br, and E93 among insect species, we propose that the “propupal” and “pupal” stages of thrips have some similarities with the holometabolous prepupal and pupal stages, respectively.

scholarly journals Application of Multiplex RT-PCR for Simultaneous Identification of Tomato Spotted Wilt Virus and Thrips Species in an Individual Thrips on Chrysanthemum

2020 ◽  
Vol 26 (4) ◽  
pp. 264-271
Author(s):  
Ju-Yeon Yoon ◽  
Jung-Beom Yoon ◽  
Mi-Hye Seo ◽  
Seung-Kook Choi ◽  
In-Sook Cho ◽  
...  
Keyword(s):  
Tomato Spotted Wilt Virus ◽  
Rt Pcr ◽  
Tomato Spotted Wilt ◽  
Thrips Species ◽  
Wilt Virus ◽  
Simultaneous Identification

scholarly journals Additions to the thrips (Thysanoptera) fauna of Odisha, India

2017 ◽  
Vol 9 (3) ◽  
pp. 1522-1524
Author(s):  
R. R. Rachana ◽  
R. Varatharajan
Keyword(s):  
Host Plants ◽  
North India ◽  
Diagnostic Features ◽  
Thrips Species ◽  
First Time ◽  
New Distribution

Ten thrips species in ten genera of two families (Phlaeothripidae and Thripidae) of suborders Tubulifera and Terebrantia (Order Thysanoptera) are newly added to the fauna of Odisha, India. These species collected from various host plants are being reported for the first time from Odisha; three species in Phlaeothripidae and seven in Thripidae. Three species, Panchaetothrips stepheni, Scirtothrips bispinosus and Elaphrothrips greeni are recorded as new distribution reports from North India whereas, Crotonothrips polyalthiae has been newly reported from India. This survey reports newly added nine genera viz.,Astrothrips, Panchaetothrips, Selenothrips, Neohydatothrips, Den-drothripoides, Megalurothrips, Elaphrothrips, Crotonothrips and Karnyothrips and two subfamilies Panchaetothripi-nae and Idolothripinae to the fauna of Odisha. Diagnostic features, distribution and data on material studied for the-se species are given. The number of known species of thrips in Odisha is thus increased to 23.

Impact of Climate Change on a Key Agricultural Pest

2018 ◽  
pp. 65-87 ◽  
Author(s):  
Tamika A. Garrick ◽  
Oscar E. Liburd
Keyword(s):  
Climate Change ◽  
Developing Countries ◽  
Agricultural Production ◽  
Management Strategies ◽  
Human Consumption ◽  
Agricultural Pests ◽  
Tropical Regions ◽  
Pests And Diseases ◽  
Thrips Species ◽  
Rising Sea Levels

The world population is expected to exceed 9 billion by 2050 and most of this growth will occur in developing countries. As population increases, more arable lands will be used to construct cities and these activities increase CO2 in the atmosphere and contribute to climate change. Climate assessments have shown rising sea levels and increase in the frequency of droughts in many dry areas. Prolonged droughts can decrease the relative amounts of water available for human consumption and agriculture. In developing countries agriculture contributes to more than 15% of GDP and when crops and livestock are deprived of water they become more susceptible to pests and diseases. As climate change continues to occur there is a need to develop strategies to manage key invasive pest and disease species that threaten agricultural production. Thrips are major agricultural pests with the majority of species in tropical regions. They are cosmopolitan in nature and damage crops when they feed and lay eggs in many parts of the plant. Thrips are also vectors for spreading plant diseases. They disperse quickly into new areas where susceptible hosts exist. This chapter focuses on a few important thrips species that threatens agricultural production in the Americas including Central and South America and the Caribbean. The chapter discusses the ecology and pest management strategies for key invasive thrips species and examines the potential effects of climate change on these troublesome species.

scholarly journals Resistance to three thrips species in Capsicum spp. depends on site conditions and geographic regions

2019 ◽  
Vol 143 (9) ◽  
pp. 929-941 ◽  
Author(s):  
Isabella G. S. Visschers ◽  
Janny L. Peters ◽  
Lisa L. H. Timmermans ◽  
Else Edwards ◽  
Jedeliza B. Ferrater ◽  
...  
Keyword(s):  
Site Conditions ◽  
Thrips Species ◽  
Capsicum Spp ◽  
Geographic Regions
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