Relationships between Tospovirus Incidence and Thrips Populations on Tomato in Mendoza, Argentina

Borbón, Carlos Manuel de; Gracia, Olga; Piccolo, R. J.

doi:10.1111/j.1439-0434.2006.01066.x

Cited by 42 publications

(17 citation statements)

References 18 publications

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“…These results indicate that F.occidentalis has replaced and possibly competitively displaced F. australis as the most common species. de Borbon et al (2006) reported that F. occidentalis was more common than F. australis on crop and wild plant species in Argentina.…”

Section: Discussionmentioning

confidence: 99%

Population Abundance ofFrankliniella occidentalis(Thysanoptera: Thripidae) and Natural Enemies on Plant Hosts in Central Chile

et al. 2009

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Populations of the invasive Frankliniella occidentalis (Pergande) are serious pests of agricultural crops in the Aconcagua Valley of central Chile. An extensive survey was conducted of 55 plant species in 24 families to identify plant hosts of F. occidentalis and to determine its relative abundance on each host during each season. A more intensive study was conducted on selected plant species serving as reproductive hosts to determine the population dynamics of F. occidentalis and to evaluate the potential importance of Orius species and other natural enemies for controlling F. occidentalis. Adults of F. occidentalis were active during each season of the year inhabiting the flowers of 91% of the sampled plant species in 22 families, and 86% of these plant species in 19 families served as reproductive hosts. The number of host plant species used was greatest in the spring and least in the winter. All of the hosts except Medicago sativa L. were used only when flowering. Populations of F. occidentalis were significantly aggregated in M. sativa in the terminal buds over the leaves when the host was not flowering, and in the flowers, followed by the terminal buds, followed by the leaves when the host was flowering. Larvae were 1.3-2.3 times more abundant on dates when M. sativa was flowering. There were no identifiable patterns in plant hosts based on endemicity or plant family. Most of the plant species used by F. occidentalis were inferior quality hosts where populations either declined or were stable. Populations of F. occidentalis on low-quality hosts generally escaped predation by Orius species and competition by other species of thrips. Only 25% of the food hosts and 28% of the reproductive hosts for F. occidentalis in the extensive survey, respectively, were host plants for Orius. Parasitoids and other predators were not found to be important in suppressing thrips on any of the plant hosts. Populations of F. occidentalis increased on only a few hosts, including M. sativa and Sisymbrium officinale L. Scop. These apparently are major sources of F. occidentalis adults invading crops. We conclude that F. occidentalis is established in central Chile and that it has replaced and possibly displaced the native Frankliniella australis (Morgan) as the most common thrips species.

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Section: Discussionmentioning

confidence: 99%

Population Abundance ofFrankliniella occidentalis(Thysanoptera: Thripidae) and Natural Enemies on Plant Hosts in Central Chile

et al. 2009

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“…Frankliniella schultzei transmits a virus causing a tanning feature in the leaves of tomatoes and a curving in the pointer plant. When the virus is installed in the fruit, the symptoms consisted of concentric rings, both in green as well as mature fruits 6 . In Brazil, the damages caused by the virus on tomato production can lead to reductions of 20 to 70 % of crop losses as well as reduce the production of flowers and fruit around 85 % 5 .…”

Section: Introductionmentioning

confidence: 99%

Chemical Composition of Essential Oil fromEucalyptus citriodoraLeaves and Insecticidal Activity AgainstMyzus persicaeandFrankliniella schultzei

Costa

Pinheiro

Queiroz

et al. 2015

Journal of Essential Oil Bearing Plants

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Essential oils, volatile compounds obtained from plants, provide an alternative approach for controlling agricultural pests due to problems with conventional chemical products, such as insect resistance, environmental issues and human health concerns. This work aimed to extract essential oil from Eucalyptus citriodora to assess its chemical composition and insecticidal activity against the green peach aphid (Myzus persicae) and thrips (Frankliniella schultzei). The essential oil was obtained by hydrodistillation using the Clevenger apparatus and analyzed by gas chromatography with a flame ionization detector and mass spectrometry (GC-FID and GC-MS). A Potter tower was used to spray the insects with the essential oil solutions.The major components found in E. citriodora essential oil were citronellal (29.31 %), geraniol (27.63 %), β-citronellol (14.88 %) and δ-cadinene (6.32 %). Mortality of M. persicae and F. schultzei nymphs were 85.5 % and 34.8 %, respectively, using essential oil at 1 % (w v -1 ). Estimated values of LC 50 (0.40 % w v -1 ) and LC 90 (1.15% w v -1 ) for M. persicae evidences the potential use of E. citriodora essential oil in controlling this pest.

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“…Frankliniella schultzei Trybon (Thysanoptera: Thripidae) is an insect that causes direct damage by feeding on leaves and indirect damage due to its capacity to transmit the Groundnut ring spot virus (GRSV) (Borbón et al 2006) and Tomato spotted wilt virus (TSWV) (Coutts and Jones 2005), which can make tomato production unviable (Tedeschi et al 2001).…”

Section: Introductionmentioning

confidence: 99%

Calcium silicate and organic mineral fertilizer increase the resistance of tomato plants to Frankliniella schultzei

et al. 2009

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Frankliniella schultzei Trybon (Thysanoptera: Thripidae) is an important pest of tomato plants. The need for more healthful foods is stimulating the development of techniques to increase plant resistance to phytophagous insects. The objective of this research was to evaluate the effect of calcium silicate and an organic mineral fertilizer, alone or in combination, on the resistance of tomato plants to F. schultzei. The treatments consisted of: control (T1), calcium silicate (T2), organic mineral fertilizer (T3), and calcium silicate with organic mineral fertilizer (T4). The mortality of nymphs of this thrips and the number of lesions on tomato leaves were evaluated after three, six, nine and 12 applications of these products. The number of F. schultzei individuals and of lesions on tomato leaves was lower in treatments T2 and T4 than in T1 and T3, showing a possible increase in tomato resistance to this pest. The increase in the number of applications of calcium silicate and the organic mineral fertilizer increased the mortality of nymphs and reduced the damage by this insect on tomato leaves, mainly after nine applications.

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Relationships between Tospovirus Incidence and Thrips Populations on Tomato in Mendoza, Argentina

Cited by 42 publications

References 18 publications

Population Abundance ofFrankliniella occidentalis(Thysanoptera: Thripidae) and Natural Enemies on Plant Hosts in Central Chile

Population Abundance ofFrankliniella occidentalis(Thysanoptera: Thripidae) and Natural Enemies on Plant Hosts in Central Chile

Chemical Composition of Essential Oil fromEucalyptus citriodoraLeaves and Insecticidal Activity AgainstMyzus persicaeandFrankliniella schultzei

Calcium silicate and organic mineral fertilizer increase the resistance of tomato plants to Frankliniella schultzei

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