Performance of Western Flower Thrips (Thysanoptera: Thripidae) on Cultivars of Miniature Rose

Bergh, Chris J.; Blanc, Jean-Pierre R. Le

doi:10.1093/jee/90.2.679

Cited by 16 publications

(14 citation statements)

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“…There is much evidence that host plant species and cultivar can alter insect development rates (e.g. de Jager et al, 1993;Nakao, 1994;Tsai et al, 1995;Trematerra et al, 1996;Bergh & le Blanc, 1997;de Kogel et al, 1999), and while we used the same host plant for all trials, other studies have used a variety of host plants. Trudgill (1995) provided a functional explanation for trade offs between DDR and Tmin, arguing that genotypes with a lower Tmin will have a lower development rate at the optimal tempera ture for development than genotypes with a higher Tmin.…”

Section: Discussionmentioning

confidence: 99%

Temperature and the development rates of thrips: Evidence for a constraint on local adaptation?

Stacey¹,

Fellowes²

2002

Eur. J. Entomol.

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Abstract. Typically, the relationship between insect development and temperature is described by two characteristics: the minimum temperature needed for development to occur (Tmin) and the number of day degrees required (DDR) for the completion of develop ment. We investigated these characteristics in three English populations of Thrips major and T. tabaci [Cawood, Yorkshire (N53°49', W1°7'); Boxworth, Cambridgeshire (N52°15', W0°1'); Silwood Park, Berkshire (N51°24', W0°38')], and two popula tions of Frankliniella occidentalis (Cawood; Silwood Park). While there were no significant differences among populations in either Tmin (mean for T. major = 7.0°C; T. tabaci = 5.9°C; F. occidentalis = 6.7°C) or DDR (mean for T. major = 229.9; T. tabaci = 260.8; F. occidentalis = 233.4), there were significant differences in the relationship between temperature and body size, suggesting the presence of geographic variation in this trait. Using published data, in addition to those newly collected, we found a negative rela tionship between Tmin and DDR for F. occidentalis and T. tabaci, supporting the hypothesis that a trade-off between Tmin and DDR may constrain adaptation to local climatic conditions.

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Section: Discussionmentioning

confidence: 99%

Temperature and the development rates of thrips: Evidence for a constraint on local adaptation?

Stacey¹,

Fellowes²

2002

Eur. J. Entomol.

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“…The observed differences in thrips reproduction could be caused by differential interactions between some of the resistant genotypes and F. fusca. Factors such as physiological differences in nutrient contents along with variations in morphological traits such as leaßet thickness and wax content could have inßuenced the interaction between genotypes and F. fusca (Berg and Le Blanc 1997, de Kogel et al 1997, Scott Brown et al 2002, Baez et al 2011). On the contrary, the observed differences could have been merely because of a cultivar/genotype effect.…”

Section: Fig 4 Western Blots Withmentioning

confidence: 99%

Second Generation Peanut Genotypes Resistant to Thrips-Transmitted Tomato Spotted Wilt Virus Exhibit Tolerance Rather Than True Resistance and Differentially Affect Thrips Fitness

et al. 2013

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Spotted wilt disease caused by Tomato spotted wilt virus (TSWV) (family Bunyaviridae; genus Tospovirus) is a major constraint to peanut (Arachis hypogaea L.) production in the southeastern United States. Reducing yield losses to TSWV has heavily relied on planting genotypes that reduce the incidence of spotted wilt disease. However, mechanisms conferring resistance to TSWV have not been identified in these genotypes. Furthermore, no information is available on how these genotypes influence thrips fitness. In this study, we investigated the effects of newly released peanut genotypes (Georganic, GA-06G, Tifguard, and NC94022) with field resistance to TSWV and a susceptible genotype (Georgia Green) on tobacco thrips, Frankliniella fusca (Hinds), fitness, and TSWV incidence. Thrips-mediated transmission resulted in TSWV infection in both TSWV-resistant and susceptible genotypes and they exhibited typical TSWV symptoms. However, some resistant genotypes had reduced viral loads (fewer TSWV N-gene copies) than the susceptible genotype. F. fusca larvae acquired TSWV from resistant and susceptible genotypes indicating that resistant genotypes also can serve as inoculum sources. Unlike resistant genotypes in other crops that produce local lesions (hypersensitive reaction) upon TSWV infection, widespread symptom development was noticed in peanut genotypes. Results indicated that the observed field resistance in peanut genotypes could be because of tolerance. Further, fitness studies revealed some, but not substantial, differences in thrips adult emergence rates and developmental time between resistant and susceptible genotypes. Thrips head capsule length and width were not different when reared on different genotypes.

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“…Where insecticide use is prevalent, F. occidentalis rapidly develop and maintain insecticide resistance (Immaraju et al., 1992; Jensen, 2000; Kiers et al., 2000). Effective control of F. occidentalis necessitates integrated management tactics such as biological control (Berndt et al., 2004), host plant resistance (Bergh & Le Blanc, 1997; de Kogel et al., 1998), cultural practices (Schuch et al., 1998; Stavisky et al., 2002), and the judicious use of insecticides.…”

Section: Introductionmentioning

confidence: 99%

Influences of fertilization on population abundance, distribution, and control of Frankliniella occidentalis on chrysanthemum

Chau

Heinz

Davies

2005

Entomologia Exp Applicata

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We examined the effects of fertilization on population abundance and within‐plant distribution of western flower thrips, Frankliniella occidentalis Pergande (Thysanoptera: Thripidae), on potted chrysanthemum, Dendranthema grandiflora (Tzvelev). We also investigated the effects of fertilization on the number of insecticide applications needed to control F. occidentalis on potted chrysanthemum. Under greenhouse conditions, rate of change in population abundance of F. occidentalis increased with fertilization levels from 0 to 100% of the standard fertilization level (375 ppm N) and was four times higher on plants fertilized with the standard level (rate of change = 0.14) than on plants fertilized with 0% during the first 4 weeks after thrips inoculation. Within‐plant distribution of F. occidentalis was influenced by the phenology of the plants rather than total nitrogen content of plant tissues. Prior to flower opening, more F. occidentalis were found in the middle region of the plants. When the flowers began to open, more thrips were found feeding inside the flowers than on the leaves. We further showed that production time, the time from transplantation to flower opening, shortened considerably with increased fertilization level. Production time was shortest, 12 weeks, for plants fertilized with 100% of the standard fertilization level. When the fertilization level was reduced to 20%, production time lengthened to 13 weeks. When fertilization level was reduced to 0%, production time lengthened to 14 weeks. Increased fertilization from 0 to 100% of the standard level did not result in higher numbers of insecticide applications. All three insecticides (acephate, bifenthrin, and spinosad) were effective in keeping the thrips infestation below a predetermined level, five thrips per plant, but bifenthrin required the most number of applications to do so. For chrysanthemum, a fast‐growing crop and heavy utilizer of fertilizer, fertilization influenced not only the population growth of pest insects but also plant production time. As a result, optimizing fertilization level to reduce pest population growth may be a useful tactic in an Integrated Pest Management program for managing F. occidentalis on potted chrysanthemum. However, the effect of fertilization on production time and plant quality should also be considered when implementing this tactic.

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Performance of Western Flower Thrips (Thysanoptera: Thripidae) on Cultivars of Miniature Rose

Cited by 16 publications

References 0 publications

Temperature and the development rates of thrips: Evidence for a constraint on local adaptation?

Temperature and the development rates of thrips: Evidence for a constraint on local adaptation?

Second Generation Peanut Genotypes Resistant to Thrips-Transmitted Tomato Spotted Wilt Virus Exhibit Tolerance Rather Than True Resistance and Differentially Affect Thrips Fitness

Influences of fertilization on population abundance, distribution, and control of Frankliniella occidentalis on chrysanthemum

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