Seasonal Dispersal Patterns of Frankliniella fusca (Thysanoptera: Thripidae) and Tomato Spotted Wilt Virus Occurrence in Central and Eastern North Carolina

Groves, Russell L.; Walgenbach, J. F.; Moyer, J. W.; Kennedy, George G.

doi:10.1093/jee/96.1.1

Cited by 39 publications

(61 citation statements)

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“…The majority (92%) of thrips were collected the first week of June (2 June 2004 and 5 June 2005), while the remaining 8% were collected on the subsequent sampling dates. The higher counts in early June are in agreement with Groves et al (2003), who found tobacco thrips at higher density in peanut producing areas in North Carolina in late May and early June than later in the season. Of the thrips collected 14.4% were adults and the remainder immatures.…”

Section: Resultssupporting

confidence: 90%

“…Frankliniella fusca (Hinds), tobacco thrips (TT) is the primary TSWV vector found on peanut in North Carolina (Barbour and Brandenburg, 1994;Cho et al, 1995;Eckel et al, 1996;Groves, 2001;Groves et al, 2003). Frankliniella occidentalis (Pergande), western flower thrips also occurs in peanut producing areas in North Carolina, but are rarely found on peanut foliage (Eckel et al, 1996;Groves, 2001;Groves et al, 2003).…”

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confidence: 99%

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Variation Among Virginia Market-Type Peanut Genotypes in Susceptibility to Tomato Spotted Wilt Virus Vectored by Thrips (Thysanoptera: Thripidae)

Riniker¹,

Brandenburg²,

Kennedy³

et al. 2008

Peanut Science

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Tomato spotted wilt virus (TSWV), a thripsvectored tospovirus, is an important pathogen of peanut (Arachis hypogaea L.). Development of tolerant cultivars has proven to be one of the most promising methods to manage the disease. Twenty-four genotypes of virginia market-type peanut were monitored in field tests for thrips damage, and TSWV incidence and severity during 2004 and 2005 in North Carolina. The cultivar Gregory had a higher density of adult thrips in foliage than any other genotype, while breeding lines N01057 and N03054E had the lowest density. No significant correlation was detected between thrips density or injury and TSWV incidence. Line N03036EJ had the greatest TSWV incidence, but did not differ from cultivars Gregory or Perry in incidence. Line N00033 had the least TSWV incidence and differed from the cultivars Gregory and Perry. The occurrence of late-season chlorosis or peanut yellowing death (PYD) was highly correlated with TSWV infection (P , 0.0001). Breeding line N02051ol had the greatest incidence of PYD, but did not differ statistically from Gregory or Perry. Lines N03023EF and N01083 had the least PYD incidence. Plants infected with TSWV not expressing foliar symptoms were found in far greater abundance than plants that were infected and symptomatic. Line N03036EJ had the greatest proportion of infected but asymptomatic plants; line N03054E had the least. Susceptible lines are more likely to become infected, rather than just more likely to show spotted wilt symptoms.

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Section: Resultssupporting

confidence: 90%

mentioning

confidence: 99%

Variation Among Virginia Market-Type Peanut Genotypes in Susceptibility to Tomato Spotted Wilt Virus Vectored by Thrips (Thysanoptera: Thripidae)

Riniker¹,

Brandenburg²,

Kennedy³

et al. 2008

Peanut Science

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“…After overwintering on susceptible weed hosts primarily as brachypterous females (Chamberlin et al, 1992;Cho et al, 1995;Brown et al, 1996), thrips begin dispersing to new hosts in late March and early April (Groves et al, 2003). In North Carolina, movement of thrips vectors among weed hosts in late winter and spring results in spread of TSWV among weed hosts and an increase in source of TSWV prior to peak flights of tobacco thrips, which typically occur in midto late-May (Eckel et al, 1996;Groves et al, 2002Groves et al, , 2003. Thrips moving into the field during the spring are mostly from nearby sources, and these populations of thrips provide the primary source of inoculum (Todd et al, 1990;Chamberlin et al, 1992;Camann et al, 1995;Brown et al, 1996;Groves et al, 2003).…”

mentioning

confidence: 99%

“…In North Carolina, movement of thrips vectors among weed hosts in late winter and spring results in spread of TSWV among weed hosts and an increase in source of TSWV prior to peak flights of tobacco thrips, which typically occur in midto late-May (Eckel et al, 1996;Groves et al, 2002Groves et al, , 2003. Thrips moving into the field during the spring are mostly from nearby sources, and these populations of thrips provide the primary source of inoculum (Todd et al, 1990;Chamberlin et al, 1992;Camann et al, 1995;Brown et al, 1996;Groves et al, 2003). Thrips may also migrate into fields on wind currents (Todd et al, 1990;Mound, 1996).…”

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Effect of Cultivar and Plant Population on Spotted Wilt in Virginia Market-Type Peanut

et al. 2004

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Field experiments were conducted in North Carolina during 2001 and 2002 to evaluate the impact of cultivar and plant population on the incidence of symptoms of tomato spotted wilt virus, which is transmitted primarily by tobacco thrips [Frankliniellafusca (Hinds) (Thysanoptera: Thripidae)]. Treatments included the virginia market-type cultivars Gregory, NC-V 11, and Perry seeded at in-row plant populations of 7, 13, and 17 plants/m. In these experiments, there was a consistent trend for increased foliar injury from thrips as plant population decreased. Less thrips feeding 'Former Grad. Res. Asst., Prof., and Prof., respectively, Dept. injury was noted for Gregory and Perry than for NC-V 11. Incidence of visual symptoms of spotted wilt (SW) was recorded from mid-June through mid-September. A plant condition rating was recorded late in the season. Consistent with the results for thrips-induced injury, the percentage of plants infected with SW and the plant condition rating increased as plant population decreased. Gregory had the lowest SW incidence, while NC-V 11 was intermediate between Gregory and the most susceptible Perry. Establishing higher plant densities and planting Gregory rather than NC-V 11 or Perry reduced SW incidence and plant condition rating. Gregory had consistently the highest %ELK (extra large kernels) and %FP(fancy pods) across treatments and locations whereas no definitive trend in market grade characteristics were noted among treatments. In some cases, Perry had a higher incidence of SW, but still had higher pod yields than NC-V 11 with a lower incidence of SW. However, in most cases pod yield correlated with plant condition ratings, and as thrips injury increased, pod yield decreased.

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Stability of neonicotinoid sensitivity in Frankliniella fusca populations found in agroecosystems of the southeastern USA

Chappell

Huseth

Kennedy

2019

Pest Management Science

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BACKGROUND Insecticide resistance arises at a given location in response to selection acting on novel genotypes or standing variation, or allelic migration. Fitness costs of resistance may slow resistance evolution or result in reversion to susceptibility, but consistent and geographically widespread use of insecticides may provide sufficient selection to offset the fitness costs of resistance. Understanding this relationship is important to the success of insecticide resistance management. We report the existence of fitness costs of neonicotinoid resistance in field‐collected populations of the tobacco thrips (Frankliniella fusca), which increasingly challenge upland cotton production in the southeastern USA. RESULTS Populations (14 of 15 in 2015; 4 of 5 in 2016) investigated showed a loss of resistance to imidacloprid after multiple generations without exposure to the insecticide. Populations studied in 2016 were each split into two colonies, and one of each pair was repeatedly exposed to imidacloprid. In three of the four populations that lost resistance, imidacloprid‐exposed colonies lost resistance significantly more slowly than did corresponding unexposed colonies. CONCLUSION For imidacloprid resistance to be broadly increasing in the landscapes of the southeastern USA despite fitness costs of resistance, selection for resistance must be sufficient to overcome the costs. Findings encourage investigation into why costs are overcome in this system, potentially including geographic extent of neonicotinoid use or prevalence of low‐dose exposure. © 2019 Society of Chemical Industry

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Seasonal Dispersal Patterns of Frankliniella fusca (Thysanoptera: Thripidae) and Tomato Spotted Wilt Virus Occurrence in Central and Eastern North Carolina

Cited by 39 publications

References 3 publications

Variation Among Virginia Market-Type Peanut Genotypes in Susceptibility to Tomato Spotted Wilt Virus Vectored by Thrips (Thysanoptera: Thripidae)

Variation Among Virginia Market-Type Peanut Genotypes in Susceptibility to Tomato Spotted Wilt Virus Vectored by Thrips (Thysanoptera: Thripidae)

Effect of Cultivar and Plant Population on Spotted Wilt in Virginia Market-Type Peanut

Stability of neonicotinoid sensitivity in Frankliniella fusca populations found in agroecosystems of the southeastern USA

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