Horizontal and Vertical Distribution of Flower Thrips in Southern Highbush and Rabbiteye Blueberry Plantings, with Notes on a New Sampling Method for Thrips Inside Blueberry Flowers

Arévalo, H. Alejandro; Liburd, Oscar E.

doi:10.1093/jee/100.5.1622

Cited by 16 publications

(10 citation statements)

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“…He suggested that males of F. schultzei aggregates on plant parts to attract conspecifics for mating, possibly by release of sex pheromones. In addition, there are several reports suggesting the clumped distribution of other thrips species of family Thripidae, including, T. flavus Schrank, T. major Uzel, T. atratus Haliday, F. occidentalis (Pergande) and a group of flower thrips (Morison, 1957; Kirk, 1985; Terry, 1995; Terry & Dyreson, 1996; Arevalo & Liburd, 2007) on various plant parts. Besides reproduction as a factor inducing clumping of F. schultzei population, there is not much information available on factors responsible for the aggregates forming behaviour of various thrips species.…”

Section: Resultsmentioning

confidence: 99%

Assessing abundance and distribution of an invasive thrips Frankliniella schultzei (Thysanoptera: Thripidae) in south Florida

Kakkar

Seal

Kumar

2011

Bull. Entomol. Res.

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Within-plant and within-field distribution of larvae and adults of an invasive thrips species, Frankliniella schultzei (Trybom) on cucumber, Cucumis sativus L. was studied in 2008 and 2009 in Homestead, Florida. The majority of thrips were found inhabiting flowers of cucumber plants and little or none was found on the other parts of the plant. Thrips were aggregated in the field, as indicated by the two regression models, Taylor's power and Iwao's patchiness regression. Iwao's patchiness regression provided a better fit than Taylor's power law. The distribution was clumped during the initial stages of infestation at the edges of the field and became random thereafter. However, with increase in population density, thrips again formed aggregates in the field. Based on the average pest density per flower in a ∼0.25-ha field, minimum sample size (number of flowers) required at the recommended precision level (0.25) was 51. The number of samples required at two levels of predetermined pest density was also calculated, which would help growers in collecting optimum number of samples required to determine the correct threshold level of pest in fields. Results from seasonal abundance indicated that density of thrips peaked during the fifth week of sampling with an average of 25 and 34 adults per ten flowers during autumn 2008 and 2009, respectively. Results from these studies will help growers and extension personnel in understanding the abundance and distribution of F. schultzei in the field, which are important components required in developing a sound management program.

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Section: Resultsmentioning

confidence: 99%

Assessing abundance and distribution of an invasive thrips Frankliniella schultzei (Thysanoptera: Thripidae) in south Florida

Kakkar

Seal

Kumar

2011

Bull. Entomol. Res.

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“…Although flower thrips have not been considered major pests of olives, flower thrips infestations have been implicated in scarred or misshapen olive fruit (Spooner-Hart et al 2007). Sampling directly from flowers provides a good estimate of thrips populations present in blueberry fields (Arévalo & Liburd 2007b), but strong correlations have been found between thrips counts on sticky cards and counts from flowers (Arévalo-Rodriguez 2006). Destructive sampling of flowers in commercial orchards often is not advisable, so the use of sticky cards can provide a desirable approach to sampling.…”

Section: Introductionmentioning

confidence: 99%

Attraction of Thrips (Thysanoptera) to Colored Sticky Traps in a Florida Olive Grove

Allan

Gillett-Kaufman

2018

Florida Entomologist

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A study was conducted in 4 plots within a newly established olive grove in Florida to assess surveillance methods for insects present around the period of olive bloom. Over 99% of thrips collected were Frankliniella bispinosa (Morgan) (Thysanoptera: Thripidae), with occasional collections of predacious Leptothrips pini (Watson) (Thysanoptera: Phlaeothripidae). Collections of thrips using sticky traps or in tap or brush samples were high at the time of bloom, with low numbers before bloom and very low numbers after bloom. No differences in collections were seen among plots for thrips numbers when sampled using sticky cards. However, one plot had higher thrips numbers when sampled using tap and brush samples. Overall, and especially during bloom, blue sticky traps were most attractive, followed by yellow and then white sticky traps. Clear (color-free) traps collected the fewest thrips. Using tap samples, more thrips were collected on the edges than in the middle of the grove. Highly localized high densities of thrips were detected by the tap samples. Although sticky traps were highly effective for collecting thrips, only tap samples detected the localized hot spots.

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“…The significant positive correlation between thrips densities and wind speed is predictable and reasonably justified, since insects can be passively transported by the wind (Arévalo & Liburd, 2007). Therefore, local common activities should be performed during light winds, since stronger winds and higher altitudes can favor insect migration.…”

Section: Resultsmentioning

confidence: 84%

Flight movement and spatial distribution of immunomarked thrips in onion, potato, and tomato

Fernandes

2015

Pesq. agropec. bras.

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-The objective of this work was to evaluate the spatial distribution of thrips in different crops, and the correlation between meterological parameters and the flight movements of this pest, using immunomarking. The experiment was conducted in cultivated areas, with tomato (Solanum lycopersicum), potato (Solanum tuberosum), and onion (Allium cepa); and non-cultivated areas, with weedy plants. The areas with tomato (100 days), potato (20 days), and weeds were sprayed with casein, albumin, and soy milk, respectively, to mark adult thrips; however, the areas with onion (50 days) and tomato (10 days) were not sprayed. Thrips were captured with georeferenced blue sticky traps, transferred into tubes, and identified by treatment area with the Elisa test. The dependence between the samples and the capture distance was determined using geostatistics. Meteorlogical parameters were correlated with thrips density in each area. The three protein types used for immunomarking were detected in different proportions in the thrips. There was a correlation between casein-marked thrips and wind speed. The thrips flew a maximum distance of 3.5 km and dispersed from the older (tomato) to the younger crops (potato). The immunomarking method is efficient to mark large quantities of thrips.Index terms: Alliaceae, dispersal pattern, Elisa, integrated pest management, Solanaceae, Thysanoptera. Movimento de voo e distribuição espacial de tripes imunomarcados em cebola, batata e tomateResumo -O objetivo deste trabalho foi avaliar a distribuição espacial de tripes em diferentes cultivos, e a correlação entre os parâmetros meteorológicos e o movimento de voo dessa praga, com uso de imunomarcação. O experimento foi conduzido em área cultivada com tomate (Solanum lycopersicum), batata (Solanum tuberosum) e cebola (Allium cepa); e não cultivada, com plantas daninhas. As áreas com tomate (100 dias), batata (20 dias) e plantas daninhas foram pulverizadas com caseína, albumina e leite de soja, respectivamente, para marcar os tripes adultos; no entanto, as áreas com cebola (50 dias) e tomate (10 dias) não foram pulverizadas. Os tripes foram capturados com armadilha adesiva de cor azul georeferenciada, acondicionados em tubos e identificados, por área de tratamento, com o teste de Elisa. Determinou-se a dependência entre as amostras e a distância de captura com uso de geoestatística. Os parâmetros meteorológicos foram correlacionados com a densidade de tripes em cada área. Os três tipos de proteína usados na imunomarcação foram detectados, em diferentes proporções, nos tripes. Houve correlação entre os tripes marcados com caseína e a velocidade do vento. Os tripes voaram uma distância máxima de 3,5 km e dispersaram dos cultivos mais velhos (tomate) para os mais jovens (batata). O método de imunomarcação é eficiente para marcar grandes quantidades de tripes.Termos para indexação: Alliaceae, padrão de dispersão, Elisa, manejo integrado de pragas, Solanaceae, Thysanoptera.

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Horizontal and Vertical Distribution of Flower Thrips in Southern Highbush and Rabbiteye Blueberry Plantings, with Notes on a New Sampling Method for Thrips Inside Blueberry Flowers

Cited by 16 publications

References 0 publications

Assessing abundance and distribution of an invasive thrips Frankliniella schultzei (Thysanoptera: Thripidae) in south Florida

Assessing abundance and distribution of an invasive thrips Frankliniella schultzei (Thysanoptera: Thripidae) in south Florida

Attraction of Thrips (Thysanoptera) to Colored Sticky Traps in a Florida Olive Grove

Flight movement and spatial distribution of immunomarked thrips in onion, potato, and tomato

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